Providers Terrence O'Connor, M.D. to Kathryn O'Day, M.D.
300 individual NPIs in the federal registry, part 16,021 of 24,427 of the A to Z by surname. Each row is the registry's record: the name and credential, the NPI, the primary specialty, the practice city and the year the NPI was issued. 117 link to a page of their own with Medicare and CMS data the registry does not carry.
| Provider | NPI | Specialty | Practice city | NPI issued |
|---|---|---|---|---|
| Terrence O'Connor, M.D. | 1063851673 | Emergency Medicine Physician | Malone, NY | 2013 |
| Terrence O'Connor | 1164811519 | Counselor | Springfield, MA | 2015 |
| Terrence O'Connor, M.A., MFT | 1972523462 | Marriage & Family Therapist | Ventura, CA | 2006 |
| Terri O'Connor, RN | 1508310442 | Neonatal Nurse Practitioner | Oklahoma City, OK | 2016 |
| Thao O'Connor, C-FNP | 1124312350 | Family Nurse Practitioner | Boston, MA | 2011 |
| Theresa O'Connor | 1043693690 | Massage Therapist | Bellingham, WA | 2015 |
| Thomas O'Connor, MD | 1043304306 | Family Medicine Physician | Greenfield, IN | 2006 |
| Thomas O'Connor, DMD | 1205100914 | Periodontics | Eglin Afb, FL | 2012 |
| Thomas O'Connor, FNP | 1215705421 | Family Nurse Practitioner | Conway, SC | 2023 |
| Thomas O'Connor, MD | 1437167434 | Internal Medicine Physician | Fort Lauderdale, FL | 2006 |
| Thomas O'Connor, M.A.,CCC-A | 1467670463 | Audiologist-Hearing Aid Fitter | Ann Arbor, MI | 2007 |
| Thomas O'Connor | 1558196303 | Physical Therapist | Goodyear, AZ | 2024 |
| Thomas O'Connor, OD | 1558457853 | Optometrist | Cheektowaga, NY | 2006 |
| Thomas O'Connor | 1598251670 | Behavior Technician | Novi, MI | 2018 |
| Thomas O'Connor, MD | 1619066859 | Internal Medicine Physician | Ann Arbor, MI | 2006 |
| Thomas O'Connor, M.D. | 1669507141 | Internal Medicine Physician | Weymouth, MA | 2007 |
| Thomas O'Connor, D.D.S. | 1679731277 | General Practice Dentistry | Sayville, NY | 2008 |
| Thomas O'Connor, M.D. | 1699872374 | Obstetrics & Gynecology Physician | Rockport, ME | 2006 |
| Thomas O'Connor, DMD | 1740431931 | General Practice Dentistry | Saint Louis, MO | 2008 |
| Thomas O'Connor, M.D. | 1760470033 | Gastroenterology Physician | Bourbonnais, IL | 2005 |
| Thomas O'Connor, MD | 1891792347 | Ophthalmology Physician | Lansdale, PA | 2005 |
| Tiffany O'Connor, LAC | 1083202436 | Mental Health Counselor | Gilbert, AZ | 2020 |
| Tiffany O'Connor, P.A. | 1376084145 | Surgical Physician Assistant | Palm Beach Gardens, FL | 2017 |
| Tiffany O'Connor | 1679180467 | Nurse Practitioner | Chillicothe, OH | 2020 |
| Tim O'Connor, DPH | 1548375256 | Pharmacist | Ponca City, OK | 2006 |
| Timothy O'Connor, PT, DPT | 1023575636 | Physical Therapist | Charlotte, NC | 2019 |
| Timothy O'Connor, M.D. | 1073856043 | Pediatrics Physician | Walla Walla, WA | 2013 |
| Timothy O'Connor, MD | 1124095997 | Specialist | Newton, MA | 2006 |
| Timothy O'Connor, LCSW | 1124155726 | Clinical Social Worker | Lauderdale Lakes, FL | 2007 |
| Timothy O'Connor | 1184573990 | Addiction (Substance Use Disorder) Counselor | Molalla, OR | 2026 |
| Timothy O'Connor, M.D. | 1194813964 | Family Medicine Physician | Sault Sainte Marie, MI | 2006 |
| Timothy O'Connor, M.D. | 1215016621 | Neonatal-Perinatal Medicine Physician | Columbia, MO | 2006 |
| Timothy O'Connor, M.D. | 1285081711 | Psychiatry Physician | Raleigh, NC | 2016 |
| Timothy O'Connor, MD | 1316169238 | Emergency Medicine Physician | Rochester, NY | 2007 |
| Timothy O'Connor, R.PH. | 1407038649 | Pharmacist | Gouverneur, NY | 2007 |
| Timothy O'Connor, D.C. | 1417028671 | Chiropractor | Alpharetta, GA | 2006 |
| Timothy O'Connor, PHARM.D | 1427339977 | Pharmacist | Ferndale, WA | 2011 |
| Timothy O'Connor, M.D. | 1437314358 | Orthopaedic Surgery Physician | Eau Claire, WI | 2008 |
| Timothy O'Connor, RN | 1437578523 | Student in an Organized Health Care Education/Training Program | Sanborn, NY | 2014 |
| Timothy O'Connor, MD | 1457105892 | Student in an Organized Health Care Education/Training Program | New York, NY | 2024 |
| Timothy O'Connor, MD | 1457315343 | Pulmonary Disease Physician | Everett, WA | 2006 |
| Timothy O'Connor, DC | 1548362072 | Chiropractor | Appleton, WI | 2006 |
| Timothy O'Connor, D.D.S. | 1558404566 | General Practice Dentistry | Murphys, CA | 2007 |
| Timothy O'Connor | 1639582869 | Neurological Surgery Physician | Boca Raton, FL | 2014 |
| Timothy O'Connor, MD | 1639708290 | Hematology & Oncology Physician | Maywood, IL | 2020 |
| Timothy O'Connor | 1689212334 | Physical Therapist | Rochester, NY | 2019 |
| Timothy O'Connor, MA | 1700539202 | Behavior Analyst | Greensburg, PA | 2022 |
| Timothy O'Connor, C.N.S. | 1770779126 | Psychiatric/Mental Health Nurse Practitioner | Brooklyn, NY | 2007 |
| Timothy O'Connor, PA-C | 1831768035 | Surgical Physician Assistant | Nashua, NH | 2021 |
| Timothy O'Connor, M.D. | 1881611309 | Plastic Surgery Physician | Rochester, NY | 2006 |
| Timothy O'Connor, PTA | 1922814292 | Physical Therapist | Huntington, WV | 2024 |
| Timothy O'Connor, CRNA | 1932185469 | Certified Registered Nurse Anesthetist | Granite City, IL | 2005 |
| Timothy O'Connor, BA.,CAC I I | 1972909463 | Addiction (Substance Use Disorder) Counselor | Monument, CO | 2014 |
| Tina O'Connor, LPC | 1437366929 | Professional Counselor | Parkesburg, PA | 2007 |
| Tori O'Connor, ATC | 1265088843 | Athletic Trainer | Incline Village, NV | 2019 |
| Tracey O'Connor, MD | 1043201411 | Medical Oncology Physician | Tampa, FL | 2005 |
| Traci O'Connor, RN | 1164863973 | Registered Nurse | Dorchester, MA | 2013 |
| Tracy O'Connor, OTD, OTR/L, BCPR | 1801441175 | Rehabilitation Practitioner | Spanish Fort, AL | 2019 |
| Tricia O'Connor, OTR | 1407978000 | Occupational Therapist | Rutland, VT | 2007 |
| Tricia O'Connor | 1588918742 | Mental Health Counselor | Coeur D Alene, ID | 2012 |
| Trish O'Connor, LCSW | 1164873329 | Clinical Social Worker | Santa Cruz, CA | 2016 |
| Tyler O'Connor, DO | 1225778087 | Internal Medicine Physician | Wilmington, NC | 2022 |
| Valarie O'Connor, MA | 1578167995 | Mental Health Counselor | Norristown, PA | 2020 |
| Valerie O'Connor, MA | 1700289766 | Mental Health Counselor | Milford, MA | 2014 |
| Vanessa O'Connor, LCSW-C | 1104233386 | Clinical Social Worker | Clarksville, MD | 2014 |
| Veronica O'Connor | 1073056032 | Behavior Technician | Daytona Beach, FL | 2016 |
| Veronica O'Connor, PMHNP-BC | 1629515234 | Psychiatric/Mental Health Nurse Practitioner | Clementon, NJ | 2017 |
| Veronica O'Connor | 1871824771 | Medical Physician Assistant | Ft Lauderdale, FL | 2010 |
| VI O'Connor, LMFT | 1992114391 | Marriage & Family Therapist | San Diego, CA | 2014 |
| Victoria O'Connor, M.D. | 1265675052 | Pediatrics Physician | New Orleans, LA | 2009 |
| Victoria O'Connor | 1275394165 | Clinical Neuropsychologist | Salisbury, NC | 2024 |
| Victoria O'Connor, P.T. | 1912037813 | Physical Therapist | Syracuse, NY | 2007 |
| Victoria O'Connor, M.D. | 1962630467 | Surgical Oncology Physician | Santa Monica, CA | 2009 |
| Vikki O'Connor, LCSW | 1912069709 | Clinical Social Worker | Auburn, NY | 2006 |
| Violeta O'Connor, RDH | 1285613810 | Dental Hygienist | San Juan, PR | 2006 |
| Virginia O'Connor, CRNA | 1023118155 | Certified Registered Nurse Anesthetist | Mineola, NY | 2006 |
| Virginia O'Connor, MACCC-SLP | 1518182690 | Speech-Language Pathologist | Marietta, OH | 2007 |
| Wendi O'Connor, M.D. | 1346317658 | Anatomic Pathology & Clinical Pathology Physician | Gainesville, FL | 2006 |
| Wendy O'Connor, LMFT | 1023149168 | Marriage & Family Therapist | San Francisco, CA | 2007 |
| Wendy O'Connor, PSY.D. | 1265765911 | Clinical Psychologist | Boston, MA | 2009 |
| Whitney O'Connor, LPC | 1003431057 | Mental Health Counselor | Augusta, GA | 2020 |
| Whitney O'Connor, MSW, LCSW | 1477091056 | Clinical Social Worker | Columbia, MO | 2017 |
| Whitney O'Connor, NP-C | 1891008181 | Family Nurse Practitioner | Smyrna, GA | 2010 |
| William O'Connor | 1043994072 | Clinical Social Worker | Paoli, PA | 2023 |
| William O'Connor, LCSW | 1124324785 | Clinical Social Worker | Columbia, LA | 2011 |
| William O'Connor | 1154752038 | Clinical Social Worker | Farmington Hills, MI | 2013 |
| William O'Connor, MD | 1336999283 | Student in an Organized Health Care Education/Training Program | Baltimore, MD | 2024 |
| William O'Connor | 1366052342 | Behavior Technician | Farmington Hills, MI | 2020 |
| William O'Connor, MD | 1497781645 | Orthopaedic Foot and Ankle Surgery Physician | Saratoga Springs, NY | 2006 |
| William O'Connor, CASAC | 1538343835 | Addiction (Substance Use Disorder) Counselor | New York, NY | 2007 |
| William O'Connor, M.D. | 1639127632 | Family Medicine Physician | Vacaville, CA | 2006 |
| William O'Connor | 1689466047 | Physical Therapist | Pittsburgh, PA | 2025 |
| William O'Connor, M.D. | 1699756650 | Internal Medicine Physician | Millbury, MA | 2005 |
| William O'Connor, M.D. | 1699888677 | Anesthesiology Physician | Beaver, PA | 2006 |
| William O'Connor, MD | 1730132507 | Neurology Physician | Media, PA | 2006 |
| William O'Connor, MD | 1780271791 | Anesthesiology Physician | Oklahoma City, OK | 2020 |
| William O'Connor, PT | 1790827368 | Physical Therapist | Springfield, IL | 2007 |
| William O'Connor, PA | 1942892369 | Physician Assistant | Charlotte, NC | 2021 |
| Yvonne O'Connor, MA, BCBA | 1164937041 | Behavior Analyst | Harwich, MA | 2017 |
| Yvonne O'Connor, CRNA | 1982907705 | Certified Registered Nurse Anesthetist | Hinsdale, IL | 2010 |
| Zach O'Connor, DO | 1073002713 | Hospitalist Physician | Sun City, AZ | 2018 |
| Zachary O'Connor, MS, NCC | 1437732641 | Counselor | Buffalo, NY | 2021 |
| Zachary O'Connor, PHARMD | 1447189188 | Pharmacist | New Haven, CT | 2026 |
| Zachary O'Connor, CRNA | 1962118836 | Certified Registered Nurse Anesthetist | Tampa, FL | 2023 |
| Zachary O'Connor, MD | 1992926919 | Surgery Physician | Wichita, KS | 2007 |
| Zari O'Connor, MD | 1164366274 | Student in an Organized Health Care Education/Training Program | Chapel Hill, NC | 2026 |
| Zoe O'Connor, MD | 1295261956 | Pediatric Hematology & Oncology Physician | Miami, FL | 2017 |
| Zoey O'Connor | 1790476307 | Behavior Technician | Brandon, FL | 2023 |
| Zyra O'Connor, M.D. | 1801239819 | Pediatrics Physician | Latham, NY | 2013 |
| Samantha O'Connor Campbell | 1306425210 | Student in an Organized Health Care Education/Training Program | Portland, OR | 2021 |
| Mario O'Connor Cordova, MD | 1063350866 | Student in an Organized Health Care Education/Training Program | Baltimore, MD | 2026 |
| Meghan O'Connor Cunningham, NP | 1609799766 | Pediatric Gastroenterology Physician | Chapel Hill, NC | 2026 |
| Jomarie O'Connor Ethier, OT | 1619966611 | Occupational Therapist | Clifton Park, NY | 2005 |
| Maura O'Connor Hellmich, RDH | 1063015998 | Dental Hygienist | Palos Park, IL | 2020 |
| Shannon O'Connor Hicks, LCSW | 1447942297 | Social Worker | New York, NY | 2023 |
| Jennifer O'Connor Hijuelos | 1194615690 | Behavior Technician | Lakeland, FL | 2025 |
| Maura O'Connor Lenth, ARNP | 1669517405 | Family Nurse Practitioner | Seattle, WA | 2007 |
| Moira O'Connor Lenth, MD | 1043062466 | Student in an Organized Health Care Education/Training Program | Oakland, CA | 2024 |
| Eileen O'Connor McFerran, DO | 1063919017 | Obstetrics & Gynecology Physician | Indianapolis, IN | 2018 |
| Alison O'Connor Sutherland, ATC, OTC, AEMT | 1962700708 | Athletic Trainer | Hyde Park, VT | 2011 |
| Caitlin O'Connor Thibeault | 1528378494 | Clinical Social Worker | Braintree, MA | 2010 |
| Tiffany O'Connor Triana, MS, CCC-SLP | 1922145135 | Speech-Language Pathologist | Florence, AZ | 2007 |
| Kathleen O'Connor Watson, RN, BSN, MS | 1063744621 | Community Health Registered Nurse | Glen Burnie, MD | 2010 |
| Maggie O'Connor Whittle, MD | 1700389517 | Critical Care Medicine (Anesthesiology) Physician | Nashville, TN | 2018 |
| Elayna O'Connor- Morris, MS, MA, LPC, NCC | 1811435472 | Professional Counselor | Baton Rouge, LA | 2017 |
| Josephine O'Connor-Anderson, MSED | 1174957435 | Specialist | Mineola, NY | 2013 |
| Siever O'Connor-Aoki, LMSW | 1396578191 | Social Worker | Elmhurst, NY | 2024 |
| Mary Anne O'Connor-Aylward, PA | 1124168620 | Physician Assistant | Bronx, NY | 2007 |
| Carla O'Connor-Bardwell, RN | 1326569831 | Registered Nurse | Thornton, CO | 2017 |
| Judy O'Connor-Becker, CLINICAL NURSE SPEC. | 1245476761 | Child & Adolescent Psychiatric/Mental Health Clinical Nurse Specialist | Green Village, NJ | 2009 |
| Elizabeth O'Connor-Boll, MD | 1922092618 | Internal Medicine Physician | Lancaster, PA | 2005 |
| Thomas O'Connor-Coates | 1316834690 | Behavior Technician | Walnut Creek, CA | 2025 |
| Caroline O'Connor-David | 1336446152 | Mental Health Counselor | Norwell, MA | 2011 |
| Jeanne O'Connor-Egan, FNP | 1356385652 | Psychiatric/Mental Health Clinical Nurse Specialist | Jackson, TN | 2006 |
| Beverly O'Connor-Griffin, CRNA, MS | 1205942034 | Certified Registered Nurse Anesthetist | St Petersburg, FL | 2006 |
| Morgan O'Connor-Heller, LMT | 1811766389 | Massage Therapist | Ashland, OR | 2023 |
| Devin O'Connor-Jackson | 1316882426 | Personal Care Attendant | Las Vegas, NV | 2026 |
| Valrie O'Connor-Johnson, LPC | 1518542885 | Professional Counselor | Somerset, NJ | 2021 |
| Kelly O'Connor-Kalil, M.A. | 1174687644 | Mental Health Counselor | Saranac Lake, NY | 2006 |
| Devon O'Connor-Kutz, PA-C | 1033150727 | Physician Assistant | Troy, MI | 2006 |
| Jennifer O'Connor-Lobato, LMHC | 1891441085 | Mental Health Counselor | Albany, NY | 2022 |
| Kathleen O'Connor-Mullen, NP | 1659321974 | Nurse Practitioner | Williamsville, NY | 2006 |
| Kristi O'Connor-Nyquist, PT | 1881683316 | Physical Therapist | Bozeman, MT | 2005 |
| Lynda O'Connor-Ohayon, ED.D. | 1285693390 | Psychologist | Sioux Falls, SD | 2006 |
| Christine O'Connor-Perrino, LMP | 1396995494 | Massage Therapist | Sequim, WA | 2008 |
| Nancy O'Connor-Perrone | 1649153255 | Specialist | West Islip, NY | 2025 |
| Katherine O'Connor-Price, LMSW | 1487203550 | Clinical Social Worker | Ferndale, MI | 2019 |
| Jessica O'Connor-Rathbun | 1003291717 | Mental Health Counselor | Albany, LA | 2015 |
| Nancy O'Connor-Ryerson, NP | 1538405246 | Adult Health Nurse Practitioner | Auburn, NY | 2012 |
| Lydia O'Connor-Sanders, DO | 1194774042 | Family Medicine Physician | Las Vegas, NV | 2006 |
| Shannon O'Connor-Schlichter | 1952227308 | Social Worker | Sumter, SC | 2026 |
| Erin O'Connor-Slater | 1598246498 | Clinical Social Worker | Castleton On Hudson, NY | 2018 |
| Kathleen O'Connor-Southcott | 1578408324 | Registered Nurse | Hays, KS | 2026 |
| Erinn O'Connor-Stover, D.P.T. | 1568719946 | Physical Therapist | Hamilton, NJ | 2012 |
| Maureen O'Connor-Strout, MC, NCC, LPC | 1407448293 | Professional Counselor | Tucson, AZ | 2021 |
| Megan O'Connor-Szuma, PH.D. | 1417843186 | Clinical Psychologist | Livonia, MI | 2025 |
| Carly O'Connor-Terry | 1619546421 | Student in an Organized Health Care Education/Training Program | Pittsburgh, PA | 2021 |
| Erin O'Connor-Thygeson | 1497352306 | Family Nurse Practitioner | Santa Cruz, CA | 2020 |
| Kathleen O'Connor-Vasquez, M.A. | 1366570897 | Mental Health Counselor | Longmont, CO | 2007 |
| Kathy O'Connor-Wray, DNP, APN, FNP-C | 1528241999 | Family Nurse Practitioner | Jackson, TN | 2007 |
| Carol O'Connor-Zeinz, LMT | 1811721715 | Massage Therapist | Darien, GA | 2024 |
| Rosemary O'Connorlcsw, LCSW | 1609907468 | Mental Health Counselor | Mequon, WI | 2007 |
| Jennifer O'Connors, NP | 1447245782 | Nurse Practitioner | Chesapeake, VA | 2005 |
| Laura O'Connors, DPT | 1730516121 | Physical Therapist | Warwick, RI | 2013 |
| Caitlyn O'Conor, PA-C | 1437787827 | Physician Assistant | Boston, MA | 2020 |
| Carolyn O'Conor, M.D. | 1437185972 | Family Medicine Physician | Millsboro, DE | 2006 |
| Casey O'Conor, DDS | 1780663385 | Orthodontics and Dentofacial Orthopedics Dentistry | North Ridgeville, OH | 2006 |
| Christopher O'Conor, M.D./PH.D. | 1144673591 | Anatomic Pathology & Clinical Pathology Physician | Nashville, TN | 2016 |
| Clarissa O'Conor, MD | 1447825799 | Family Medicine Physician | Bronx, NY | 2021 |
| Devin O'Conor, MD | 1427553601 | Anesthesiology Physician | Murray, UT | 2018 |
| Edward O'Conor | 1316249477 | Professional Counselor | Torrington, WY | 2010 |
| Elizabeth O'Conor, AG-ACNP | 1255897567 | Surgery Physician | Baltimore, MD | 2019 |
| Gregory O'Conor, M.D. | 1285602680 | Hematology & Oncology Physician | Lancaster, PA | 2006 |
| Justyna O'Conor, MD | 1285124784 | Cardiovascular Disease Physician | Ogden, UT | 2018 |
| Katie O'Conor | 1528423977 | Student in an Organized Health Care Education/Training Program | Baltimore, MD | 2015 |
| Laura O'Conor | 1932480860 | Mental Health Counselor | Malden, MA | 2011 |
| Mary O'Conor, MRI(MR) | 1427261098 | Magnetic Resonance Imaging Radiologic Technologist | St Marys, PA | 2007 |
| Megan O'Conor, OTR/L | 1104019025 | Occupational Therapist | Minneapolis, MN | 2007 |
| Shannon O'Conor | 1720662638 | Behavior Technician | Farmington Hills, MI | 2021 |
| Carolyn O'Conor-Ferguson | 1285817627 | Mental Health Counselor | Acton, MA | 2007 |
| Danielle O'Cop, M.S., CCC-SLP | 1841861838 | Speech-Language Pathologist | Petaluma, CA | 2021 |
| Oisin O'Corragain, MD | 1063968410 | Internal Medicine Physician | Philadelphia, PA | 2016 |
| Nickey O'Coyne, M.D. | 1417275348 | Internal Medicine Physician | Peoria, AZ | 2010 |
| Moira O'Crotty, CPC | 1740944982 | Peer Specialist | Tacoma, WA | 2021 |
| Sean O'Crotty | 1407603996 | Peer Specialist | Enumclaw, WA | 2024 |
| Amy O'Crowley | 1407622368 | Lactation Consultant (Non-RN) | Wichita, KS | 2023 |
| Anne O'Crowley, PH.D. | 1497948830 | Clinical Psychologist | San Francisco, CA | 2007 |
| Erin O'Crowley | 1336866649 | Behavior Technician | Cypress, CA | 2022 |
| Garrity O'Crowley, M.A., LPC (ID) | 1225460124 | Mental Health Counselor | Ontario, OR | 2013 |
| Diana O'Cuilinn | 1457968836 | Behavior Technician | Lacey, WA | 2020 |
| John O'Cull, DMD | 1982749032 | Dentist | Vanceburg, KY | 2007 |
| Madelyn O'Cull | 1366010720 | Behavior Analyst | Carmel, IN | 2021 |
| Melissa O'Cull | 1477977494 | Contractor | Madeira, OH | 2014 |
| Tracy O'Cull | 1962770735 | Addiction (Substance Use Disorder) Counselor | Desert Hot Springs, CA | 2011 |
| Stephen O'Curran, QMHA | 1134415748 | Adult Companion | Portland, OR | 2011 |
| Joanna O'Dacre | 1700512829 | Certified Registered Nurse Anesthetist | Waterford, MI | 2022 |
| Anne O'Dair, DC | 1285650689 | Chiropractor | Sparta, NJ | 2006 |
| Jennifer O'Dair | 1700148202 | Specialist | New Rochelle, NY | 2012 |
| Alfred O'Daire, PA-C | 1831184803 | Medical Physician Assistant | Emporia, VA | 2005 |
| Lisa O'Daire, APRN | 1750009338 | Psychiatric/Mental Health Nurse Practitioner | Wallingford, KY | 2022 |
| Andres O'Daly, M.D. | 1831415819 | Orthopaedic Surgery Physician | Bradenton, FL | 2010 |
| Adam O'Daniel, MS, LPC | 1568593085 | Mental Health Counselor | Muskogee, OK | 2007 |
| Amy O'Daniel, FNP-C | 1669879003 | Family Nurse Practitioner | Tupelo, MS | 2014 |
| Andrea O'Daniel, M.D. | 1619142163 | Community Health Worker | Arlington, VA | 2008 |
| Angela O'Daniel | 1750146601 | Behavior Technician | San Diego, CA | 2024 |
| Annmarie O'Daniel, LPC | 1518192301 | Counselor | Corvallis, OR | 2009 |
| Ashley O'Daniel, LMSW | 1225445976 | Clinical Social Worker | Saint Louis, MO | 2014 |
| Ashley O'Daniel | 1356059703 | Behavior Technician | Robinson, TX | 2022 |
| Briana O'Daniel, ASW | 1710390349 | Mental Health Counselor | Sacramento, CA | 2014 |
| Caitlyn O'Daniel | 1407746084 | Student in an Organized Health Care Education/Training Program | Monroe, LA | 2025 |
| Carolyn O'Daniel | 1528556818 | EEG Technician | Oklahoma City, OK | 2018 |
| Cortney O'Daniel, MS, CCC-SLP | 1881075703 | Speech-Language Pathologist | Springfield, MO | 2015 |
| Delores O'Daniel, D.M.D., PLC | 1659434751 | General Practice Dentistry | Brooks, KY | 2006 |
| Donna O'Daniel, NP | 1811237415 | Family Nurse Practitioner | Franklin, IN | 2013 |
| Elizabeth O'Daniel | 1922745363 | Surgery Physician | Galveston, TX | 2022 |
| Erin O'Daniel, D.C | 1780054668 | Pediatric Chiropractor | Garden City, NY | 2015 |
| Eshani O'Daniel, PHARMD | 1093050791 | Pharmacist | Goodyear, AZ | 2012 |
| Hailey O'Daniel | 1225648744 | Speech-Language Pathologist | Las Cruces, NM | 2020 |
| Heather O'Daniel, PA-C | 1215856109 | Physician Assistant | Austin, TX | 2026 |
| Jennifer O'Daniel | 1619431368 | Behavior Technician | Oakland, CA | 2019 |
| Jennifer O'Daniel | 1629340203 | Counselor | Tahlequah, OK | 2012 |
| Jennifer O'Daniel, CRNA | 1861362220 | Certified Registered Nurse Anesthetist | Fort Wayne, IN | 2025 |
| Jentry O'Daniel, PA | 1720463532 | Physician Assistant | Fishers, IN | 2015 |
| Joseph O'Daniel, M.D. | 1881735215 | Orthopaedic Surgery Physician | Louisville, KY | 2007 |
| Julianne O'Daniel, MS, CGC | 1265442743 | Genetic Counselor (M.S.) | Durham, NC | 2006 |
| Katelynn O'Daniel, APRN | 1144971409 | Family Nurse Practitioner | Elizabethtown, KY | 2022 |
| Kayla O'Daniel, PHARMD | 1700503224 | Pharmacist | Pacific, MO | 2022 |
| Kaysha O'Daniel, PTA | 1720567282 | Physical Therapy Assistant | Independence, KS | 2018 |
| Kelcee O'Daniel, ASW | 1700365483 | Social Worker | Oakland, CA | 2018 |
| Kelcey O'Daniel, MD | 1992314678 | Family Nurse Practitioner | Kansas City, KS | 2020 |
| Kelsie O'Daniel | 1578444030 | Family Nurse Practitioner | Whitesburg, KY | 2025 |
| Kelvin O'Daniel | 1952706533 | Pharmacist | Arkansas City, KS | 2014 |
| Kenneth O'Daniel, O.D. | 1942269659 | Optometrist | Scottsdale, AZ | 2006 |
| Lauren O'Daniel | 1073307401 | Behavior Technician | Shreveport, LA | 2025 |
| Laurie O'Daniel, RPH | 1942597943 | Pharmacist | San Antonio, TX | 2011 |
| Mary O'Daniel, MA | 1912455932 | Counselor | Elizabethtown, KY | 2016 |
| Michael O'Daniel, DMD | 1982720413 | General Practice Dentistry | Roan Mountain, TN | 2007 |
| Patrick O'Daniel, M.D. | 1144255282 | Hospitalist Physician | Cincinnati, OH | 2006 |
| Samantha O'Daniel | 1053779629 | Physical Therapist | Frontenac, MO | 2016 |
| Sara O'Daniel, DMD | 1902977531 | General Practice Dentistry | Erwin, TN | 2006 |
| Sean O'Daniel | 1912369026 | Case Manager/Care Coordinator | Denver, CO | 2016 |
| Tamalynn O'Daniel, APRN | 1386644425 | Family Nurse Practitioner | Louisville, KY | 2005 |
| Tanya O'Daniel, LISW | 1265482236 | Mental Health Counselor | Sidney, OH | 2006 |
| Taylor O'Daniel | 1689354417 | Optometrist | Eupora, MS | 2023 |
| Teresa O'Daniel, RDH | 1700594181 | Dental Hygienist | Memphis, TN | 2022 |
| Teressa O'Daniel, 03/07/2007 | 1033364716 | Other Technician | Winter Garden, FL | 2008 |
| Thomas O'Daniel, M.D. | 1871585018 | Plastic and Reconstructive Surgery Physician | Louisville, KY | 2005 |
| Timothy O'Daniel | 1528996956 | Student in an Organized Health Care Education/Training Program | Jacksonville, FL | 2026 |
| Tori O'Daniel, MD | 1073845640 | Obstetrics & Gynecology Physician | Oklahoma City, OK | 2010 |
| Victoria O'Daniel, NP | 1821892803 | Family Nurse Practitioner | Fort Collins, CO | 2025 |
| William O'Daniel | 1477321255 | Mental Health Counselor | Prestonsburg, KY | 2023 |
| Mary O'Daniel-Pierce, M.D. | 1861491177 | Anatomic Pathology & Clinical Pathology Physician | Lexington, KY | 2005 |
| Amber O'Daniels | 1083252548 | Mental Health Counselor | Fort Wayne, IN | 2019 |
| Connor O'Daniels, PHARMD | 1295388015 | Pharmacist | Roswell, GA | 2019 |
| Denise O'Daniels, COTA | 1730420928 | Occupational Therapy Assistant | Winona Lake, IN | 2013 |
| Lauren O'Danovich | 1215456736 | Speech-Language Pathologist | Romeoville, IL | 2017 |
| Martha O'Danovich, PSYD | 1912992819 | Psychologist | Merrillville, IN | 2005 |
| Rachel O'Dare, NP | 1073004297 | Psychiatry Physician | Detroit, MI | 2018 |
| Deborah O'Davis | 1417934423 | Marriage & Family Therapist | St Louis Park, MN | 2005 |
| Addison O'Day, D.C. | 1518491844 | Chiropractor | Orlando, FL | 2017 |
| Adriana O'Day | 1043706526 | Behavior Technician | Concord, CA | 2018 |
| Anne O'Day, DMD,MS | 1912117656 | Orthodontics and Dentofacial Orthopedics Dentistry | Furlong, PA | 2007 |
| Brenda O'Day, RD, CNSD | 1992916423 | Registered Dietitian | San Diego, CA | 2007 |
| Caasi O'Day, MSW, LCSW | 1801018080 | Clinical Social Worker | Las Vegas, NV | 2007 |
| Carissa O'Day, PA-C | 1154014108 | Physician Assistant | Boca Raton, FL | 2023 |
| Carla O'Day, MD | 1811937584 | Emergency Medicine Physician | Lorain, OH | 2006 |
| Carlin O'Day | 1548792963 | Speech-Language Pathologist | Chicago, IL | 2017 |
| Carolyn O'Day, LCSW | 1003920018 | Clinical Social Worker | Longview, WA | 2006 |
| Cassandra O'Day | 1124537675 | Behavior Technician | Belleview, FL | 2017 |
| Catherine O'Day, LCSW | 1649486218 | Clinical Social Worker | Boulder, CO | 2007 |
| Christine O'Day | 1235262692 | Physical Therapist | Saint Louis, MO | 2007 |
| Conor O'Day | 1285339093 | Family Medicine Physician | New York, NY | 2023 |
| Cristina O'Day, MD | 1275738940 | Obstetrics & Gynecology Physician | Anaheim, CA | 2007 |
| Daniel O'Day, D.C. | 1386667079 | Orthopedic Chiropractor | Worcester, MA | 2006 |
| Danny O'Day, CMT | 1114556057 | Massage Therapist | Wisconsin Rapids, WI | 2020 |
| David O'Day, MD | 1477514602 | Ophthalmology Physician | Mount Pleasant, SC | 2006 |
| Debra O'Day | 1013392737 | Primary Care Nurse Practitioner | Stillwater, OK | 2015 |
| Domenique O'Day, MS, PT | 1730332743 | Physical Therapist | Myrtle Beach, SC | 2008 |
| Dominique O'Day, BCBA | 1205755212 | Behavior Analyst | Rocky Hill, CT | 2026 |
| Erin O'Day, CPM LM | 1164891446 | Midwife | Genesee Depot, WI | 2015 |
| Erin O'Day, PA-C | 1578144911 | Physician Assistant | Portland, ME | 2021 |
| Francis O'Day, DDS | 1013022888 | Oral and Maxillofacial Pathology Dentistry | Tonawanda, NY | 2006 |
| Gerald O'Day, PH.D. | 1487737235 | Clinical Psychologist | Arcadia, CA | 2006 |
| Jacob O'Day, DO | 1073140901 | Family Medicine Physician | Powell, OH | 2020 |
| James O'Day, AUD | 1194871004 | Audiologist | Berlin, NH | 2007 |
| James O'Day | 1902725716 | Behavior Technician | Arlington, WA | 2026 |
| Jami O'Day, MS, RD, LD | 1730910993 | Registered Dietitian | Manvel, TX | 2024 |
| Jamie O'Day, RN, IBCLC | 1013484625 | Lactation Consultant (Registered Nurse) | Boston, MA | 2018 |
| Jennifer O'Day | 1215522578 | Advanced Practice Midwife | Norwich, CT | 2021 |
| Jennifer O'Day, PHARMD | 1316354103 | Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist | Hot Springs, SD | 2014 |
| John O'Day, M.D. | 1508880964 | Otolaryngology Physician | Somersworth, NH | 2006 |
| Julia O'Day, FNP | 1992149140 | Family Nurse Practitioner | Memphis, TN | 2013 |
| Julianna O'Day, LMHC | 1295488864 | Mental Health Counselor | Newburyport, MA | 2022 |
| Kaitlyn O'Day, APRN | 1083377063 | Nurse Practitioner | Lawrence, KS | 2021 |
| Karen O'Day, CNM, CFNP, MBA | 1164483962 | Family Nurse Practitioner | Santa Fe, NM | 2006 |
| Katharine O'Day, NHCM | 1104136340 | Midwife | Fitzwilliam, NH | 2010 |
| Katherine O'Day, MOT | 1649670332 | Occupational Therapist | Moline, IL | 2014 |
| Kathleen O'Day | 1285033381 | Athletic Trainer | Newton, MA | 2014 |
| Kathleen O'Day, MOT, OTR/L | 1740674886 | Occupational Therapist | Beaverton, OR | 2015 |
| Kathryn O'Day, M.D. | 1104976778 | Endocrinology, Diabetes & Metabolism Physician | Coon Rapids, MN | 2007 |
Source: CMS National Plan and Provider Enumeration System (NPPES) (download.cms.gov). A listing is not a recommendation: check a license with the state board (license lookups).