Providers Virginia O'Kelly, RD CDE to Joan O'Leary, APN
300 individual NPIs in the federal registry, part 16,036 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. 100 link to a page of their own with Medicare and CMS data the registry does not carry.
| Provider | NPI | Specialty | Practice city | NPI issued |
|---|---|---|---|---|
| Virginia O'Kelly, RD CDE | 1407966476 | Pediatric Nutrition Registered Dietitian | Wenatchee, WA | 2006 |
| Colleen O'Kelly Priddy, MD | 1033319439 | Surgery Physician | Seattle, WA | 2007 |
| Caitlin O'Kennedy, PA-C | 1508338104 | Physician Assistant | St Petersburg, FL | 2018 |
| Sabrina O'Kennon, PHD | 1265666531 | Clinical Psychologist | Charleston, SC | 2009 |
| Ashlee O'Kernick, PA-C | 1215309851 | Medical Physician Assistant | Elkins, WV | 2015 |
| Dan O'Kero | 1356413041 | Prosthodontics | Lakeland, FL | 2006 |
| Brian O'Key, RRT | 1851567531 | Educational Registered Respiratory Therapist | Liverpool, NY | 2008 |
| Leigh O'Key, PSS | 1972375301 | Peer Specialist | Eugene, OR | 2023 |
| Letitia O'Kicki, M.D. | 1063725307 | Family Medicine Physician | Springfield, PA | 2010 |
| Clea O'Kieffe | 1942646583 | Marriage & Family Therapist | Torrance, CA | 2013 |
| Donald O'Kieffe, M.D. | 1275501413 | Gastroenterology Physician | Washington, DC | 2006 |
| Sarah O'Kier, PA | 1629250725 | Physician Assistant | Gainesville, FL | 2007 |
| Brenda O'Kilen, SLP | 1912028259 | Speech-Language Pathologist | Bellaire, TX | 2007 |
| Stacey O'Kinsella, M.D. | 1578530697 | Family Medicine Physician | Mount Vernon, WA | 2006 |
| Anna O'Kinsky | 1245350941 | Psychiatric/Mental Health Nurse Practitioner | Westampton, NJ | 2007 |
| Ann O'Klock, LCSW | 1588657316 | Clinical Social Worker | Davenport, IA | 2005 |
| Ashley O'Konek | 1952234221 | Registered Nurse | Saint Michael, MN | 2026 |
| Karen O'Konis, PT | 1538207402 | Physical Therapist | Newington, CT | 2007 |
| Allison O'Konski | 1891462594 | Professional Counselor | Wheeling, WV | 2021 |
| Kristen O'Konski | 1346876109 | Hearing Instrument Specialist | Titusville, FL | 2020 |
| Abigail O'Koon | 1003746843 | Behavior Technician | Columbus, OH | 2026 |
| Bernadette O'Koon, MA, JD | 1235646712 | Student in an Organized Health Care Education/Training Program | Dayton, OH | 2018 |
| Jeffrey O'Koon, PH.D. | 1629258926 | Clinical Neuropsychologist | Glenview, IL | 2007 |
| Kevin O'Koon, M.D. | 1932106465 | Surgery Physician | Louisville, KY | 2005 |
| Suzann O'Koon, PHD | 1710954086 | Psychologist | Louisville, KY | 2006 |
| Jane O'Koren, DPT | 1548233653 | Physical Therapist | Rochester, MN | 2006 |
| Catherine O'Krafka, M.D. | 1336502608 | Family Medicine Physician | Hearne, TX | 2016 |
| Jashire O'Kray | 1689540288 | Behavior Technician | Plano, TX | 2025 |
| Melissa O'Kray | 1609755842 | Psychologist | Kalamazoo, MI | 2025 |
| Alyssa O'Krent | 1710417381 | Physical Therapist | San Antonio, TX | 2017 |
| Kenneth O'Krent, PH.D. | 1326109356 | Clinical Psychologist | Dallas, TX | 2006 |
| Elizabeth O'Krepki, MS, CCC-SLP | 1255069068 | Speech-Language Pathologist | Hammond, LA | 2022 |
| Sharon O'Krepkie, MS/OTR | 1528335965 | Health Educator | Port Washington, NY | 2011 |
| Janet O'Kresik, MS, RDN, LD | 1902428337 | Registered Dietitian | Oklahoma City, OK | 2020 |
| Leah O'Kresik | 1619749975 | Physical Therapy Assistant | Hermitage, PA | 2023 |
| Sheila O'Kresik, MA LPC | 1679630214 | Professional Counselor | Hermitage, PA | 2007 |
| Stephanie O'Kresik Jewette, DO | 1235831801 | Pediatrics Physician | Warren, OH | 2023 |
| Allyson O'Kula | 1871377754 | Social Worker | Stony Brook, NY | 2023 |
| Andrew O'Kula | 1629836887 | General Practice Dentistry | Springfield, MA | 2024 |
| Erin O'Kula, MD | 1154732352 | Emergency Medicine Physician | Worcester, MA | 2014 |
| Susanna O'Kula, MD | 1104211432 | Epilepsy Physician | Brooklyn, NY | 2015 |
| Allyson O'Kuma, PA-C | 1184171118 | Physician Assistant | Corbin, KY | 2016 |
| Karen Anne O'Laco, MD | 1386221448 | Anesthesiology Physician | Stanford, CA | 2021 |
| Patricia O'Lague, M.S. | 1407922743 | Genetic Counselor (M.S.) | Clovis, CA | 2006 |
| Christopher O'Laire, D.C. | 1215233564 | Chiropractor | Saraland, AL | 2011 |
| Karen O'Lalor | 1962639161 | Mental Health Counselor | Ipswich, MA | 2009 |
| Laura O'Lannerghty, PT, DPT | 1093239477 | Physical Therapist | Leesburg, GA | 2017 |
| Sean O'Laoire, PH.D. | 1790958486 | Psychologist | Los Altos, CA | 2008 |
| Daniel O'Larey | 1205107265 | Counselor | Portland, OR | 2012 |
| Michael O'Larey, ATC | 1013050012 | Athletic Trainer | Las Cruces, NM | 2007 |
| Susanne O'Larey | 1760192009 | Behavior Technician | Monrovia, CA | 2022 |
| Dena O'Larnic, DMD | 1184366577 | Pediatric Dentistry | Philadelphia, PA | 2022 |
| Kaitlin O'Laughlen | 1649036047 | Speech-Language Pathologist | Portland, OR | 2024 |
| Mary O'Laughlen, PHD, FNP-BC | 1306263900 | Family Nurse Practitioner | Manassas, VA | 2014 |
| Megan O'Laughlen, BCBA | 1144693805 | Behavior Analyst | Norfolk, VA | 2015 |
| Alayna O'Laughlin | 1841927795 | Behavior Technician | Saginaw, MI | 2022 |
| Amy O'Laughlin, MA, CCC-SLP | 1922434323 | Speech-Language Pathologist | Winona, MN | 2013 |
| Andie O'Laughlin, MD | 1669097416 | Internal Medicine Physician | Charleston, SC | 2020 |
| Angel O'Laughlin, CDCA | 1477364271 | Addiction (Substance Use Disorder) Counselor | Willoughby, OH | 2025 |
| Brooke O'Laughlin | 1457190852 | Critical Care Medicine Registered Nurse | Fort Myers, FL | 2024 |
| Brynn O'Laughlin, MD | 1255868352 | Pediatric Gastroenterology Physician | Baltimore, MD | 2017 |
| Charles O'Laughlin, MD | 1821106170 | Orthopaedic Surgery Physician | Elk Grove Village, IL | 2006 |
| Claire O'Laughlin | 1760321897 | Student in an Organized Health Care Education/Training Program | Boston, MA | 2026 |
| Daniel O'Laughlin, RPH | 1598792418 | Pharmacist | Tampa, FL | 2006 |
| Daniel O'Laughlin, M.D. | 1851334825 | Emergency Medicine Physician | Minneapolis, MN | 2006 |
| David O'Laughlin, DDS | 1194857383 | General Practice Dentistry | Warwick, RI | 2007 |
| David O'Laughlin, M.D. | 1437149754 | Anesthesiology Physician | St Petersburg, FL | 2005 |
| Deborah O'Laughlin, PH.D. | 1538203948 | Psychologist | Cape Coral, FL | 2007 |
| Diane O'Laughlin, RN, PHN, FNP | 1245505767 | Family Nurse Practitioner | Elk Grove, CA | 2012 |
| Elizabeth O'Laughlin, PH.D. | 1902997042 | Psychologist | Terre Haute, IN | 2006 |
| Emily O'Laughlin, PT, DPT | 1306376892 | Physical Therapist | Shawnee, KS | 2017 |
| Erin O'Laughlin, DO | 1326338922 | Family Medicine Physician | Roeland Park, KS | 2011 |
| Erin O'Laughlin, PHARMD | 1477213668 | Pharmacist | Tripler Army Medical Center, HI | 2021 |
| Heather O'Laughlin, AU.D. | 1326294455 | Audiologist-Hearing Aid Fitter | Zachary, LA | 2008 |
| Jennifer O'Laughlin, FNP | 1003593559 | Family Nurse Practitioner | Richmond, VA | 2023 |
| Jessica O'Laughlin | 1073345609 | Behavior Technician | Spring Hill, FL | 2024 |
| Jillian O'Laughlin | 1598296501 | Assistant Behavior Analyst | Denver, CO | 2017 |
| John O'Laughlin, M.D. | 1356761894 | Critical Care Medicine (Internal Medicine) Physician | Albany, NY | 2014 |
| Joseph O'Laughlin, D.O. | 1003877721 | Gastroenterology Physician | Clinton Township, MI | 2006 |
| Juliana O'Laughlin, M.D. | 1437103421 | Pediatrics Physician | Shakopee, MN | 2006 |
| Kailee O'Laughlin, LAT, ATC | 1902416696 | Athletic Trainer | Hannibal, MO | 2020 |
| Karen O'Laughlin, CRNA, MSN | 1225462930 | Certified Registered Nurse Anesthetist | Greensboro, NC | 2013 |
| Katherine O'Laughlin, CRNP | 1578112058 | Women's Health Nurse Practitioner | East Norriton, PA | 2019 |
| Kay O'Laughlin, ED.D. | 1396792297 | Counseling Psychologist | Gloucester, MA | 2006 |
| Kelli O'Laughlin, MD | 1578611307 | Emergency Medicine Physician | Seattle, WA | 2007 |
| Kelly O'Laughlin, MT-BC, PSYD | 1669774618 | Psychologist | High Point, NC | 2010 |
| Kevin O'Laughlin, M.D. | 1750762209 | Internal Medicine Physician | Atlanta, GA | 2015 |
| Kylie O'Laughlin, PA-C | 1487386868 | Physician Assistant | Plano, TX | 2022 |
| Lauren O'Laughlin, CNP | 1851120554 | Gerontology Nurse Practitioner | Maplewood, MN | 2024 |
| Linda O'Laughlin, RN | 1457533911 | Neonatal Intensive Care Registered Nurse | Marysville, OH | 2007 |
| Linda O'Laughlin | 1861209652 | Behavior Technician | San Diego, CA | 2024 |
| Lindsay O'Laughlin | 1528648482 | Behavior Technician | Deerfield Beach, FL | 2021 |
| Lindsey O'Laughlin, PHD, BCBA-D | 1992352140 | Psychologist | Yukon, OK | 2019 |
| Lucas O'Laughlin, LMSW | 1730445487 | Social Worker | Anchorage, AK | 2012 |
| Madison O'Laughlin | 1376464537 | Behavior Technician | Saginaw, MI | 2026 |
| Mark O'Laughlin, MA, LPC | 1508163932 | Professional Counselor | Idaho Springs, CO | 2011 |
| Mary O'Laughlin, LPC | 1457775595 | Professional Counselor | Colorado Springs, CO | 2014 |
| Megan O'Laughlin, LICSW | 1720369523 | Clinical Social Worker | Mountlake Terrace, WA | 2011 |
| Meghan O'Laughlin | 1548577240 | Pharmacist | Honeoye, NY | 2010 |
| Michael O'Laughlin, MD | 1003344110 | Surgery Physician | Owings Mills, MD | 2017 |
| Patricia O'Laughlin, MFT, ATR | 1427186147 | Marriage & Family Therapist | Los Angeles, CA | 2007 |
| Patrick O'Laughlin, PHD | 1487628517 | Psychologist | Minneapolis, MN | 2006 |
| Paul O'Laughlin, MSN, APRN, BC | 1487611976 | Adult Psychiatric/Mental Health Clinical Nurse Specialist | Chester, PA | 2006 |
| Randy O'Laughlin, D.D.S. | 1194934224 | General Practice Dentistry | Pinconning, MI | 2007 |
| Robert O'Laughlin, M.D. | 1699841254 | Radiation Oncology Physician | Las Vegas, NV | 2006 |
| Ryan O'Laughlin, PHARMD | 1295111631 | Pharmacist | Lewiston, NY | 2015 |
| Sean O'Laughlin | 1235505439 | Family Nurse Practitioner | Midlothian, VA | 2015 |
| Shaun O'Laughlin | 1629244363 | Student in an Organized Health Care Education/Training Program | Fort Carson, CO | 2008 |
| Blake O'Lavin, M.D. | 1093709578 | Neurology Physician | Corpus Christi, TX | 2005 |
| Emmanuelle O'Lavin, PHARMD | 1801165451 | Pharmacist | Hudson, FL | 2011 |
| Carlie O'Leal, LMT | 1043577307 | Massage Therapist | Dallas, OR | 2012 |
| Brian O'Lear, D.D.S. | 1871786384 | Dentist | Centerport, NY | 2007 |
| Elijah O'Lear, CSW-A | 1154127298 | Social Worker | La Grande, OR | 2025 |
| Jessica O'Lear, M.A., CCC-SLP, TSSLD | 1467790048 | Speech-Language Pathologist | Briarcliff Manor, NY | 2013 |
| Joseph O'Lear, M.D. | 1619077641 | Psychiatry Physician | Key West, FL | 2006 |
| Mary O'Lear | 1376512723 | Occupational Therapist | Dundee, MI | 2006 |
| Cory O'Lear-Zebroski | 1073069019 | Chiropractor | Knoxville, TN | 2016 |
| Patrick O'Learly, MFT | 1538209572 | Marriage & Family Therapist | Shasta Lake, CA | 2007 |
| Abby O'Leary, NTP, RWS | 1699533117 | Nutrition Education Nutritionist | Louisville, KY | 2024 |
| Aileen O'Leary, M.S.ED | 1760769780 | School Psychologist | New York, NY | 2011 |
| Alana O'Leary, LCSW-R | 1699430215 | Clinical Social Worker | White Plains, NY | 2021 |
| Alexa O'Leary, M.A., CCC-SLP | 1134808090 | Speech-Language Pathologist | Sutton, MA | 2023 |
| Alexis O'Leary, DO | 1932523545 | Obstetrics & Gynecology Physician | Helena, MT | 2014 |
| Alice O'Leary, MD | 1225000219 | Pediatrics Physician | Peabody, MA | 2006 |
| Alicia O'Leary, LMHC | 1134554082 | Mental Health Counselor | Worcester, MA | 2013 |
| Alison O'Leary, ARNP | 1194542605 | Family Nurse Practitioner | Jupiter, FL | 2024 |
| Alison O'Leary | 1376046219 | Athletic Trainer | San Clemente, CA | 2018 |
| Allison O'Leary, OTR/L | 1053784470 | Occupational Therapist | Baltimore, MD | 2015 |
| Allison O'Leary, LMSW | 1063071256 | Social Worker | Central Islip, NY | 2019 |
| Allison O'Leary | 1306692868 | Mental Health Counselor | Scottsdale, AZ | 2024 |
| Allison O'Leary, LCSW | 1336883354 | Clinical Social Worker | Anchorage, AK | 2022 |
| Allison O'Leary, PA-C | 1558646711 | Physician Assistant | Nashville, TN | 2011 |
| Alondra O'Leary | 1770322372 | Day Training/Habilitation Specialist | Stockton, CA | 2024 |
| Alycia O'Leary | 1427516624 | Nutrition Education Nutritionist | Vancouver, WA | 2019 |
| Alyssa O'Leary, CCC-SLP | 1104644962 | Speech-Language Pathologist | Southborough, MA | 2024 |
| Amanda O'Leary, FNP | 1518880681 | Family Medicine Physician | Pleasantville, NY | 2026 |
| Amanda O'Leary, MS CCC-SLP | 1528685609 | Speech-Language Pathologist | Quakertown, PA | 2020 |
| Amanda O'Leary, PA-C | 1922317916 | Medical Physician Assistant | Salisbury, MD | 2010 |
| Amber O'Leary, M.D. | 1104048487 | Obstetrics & Gynecology Physician | Harrisburg, PA | 2007 |
| Amy O'Leary, OTR/L | 1114154887 | Pediatric Occupational Therapist | Huntley, IL | 2009 |
| Amy O'Leary, RD | 1659857688 | Medical Physician Assistant | Atlanta, GA | 2018 |
| Amy O'Leary | 1780494856 | Clinical Social Worker | Helena, MT | 2025 |
| Andrea O'Leary, MD | 1225259732 | Pediatrics Physician | New Orleans, LA | 2007 |
| Andrea O'Leary, BCBA | 1790183457 | Behavior Analyst | Portland, OR | 2014 |
| Andrew O'Leary, D.O. | 1376598995 | Radiation Oncology Physician | Wellington, FL | 2006 |
| Angela O'Leary | 1578000675 | Behavior Technician | Seattle, WA | 2017 |
| Angela O'Leary | 1740672948 | Occupational Therapy Assistant | Jackson, NJ | 2015 |
| Anna O'Leary, RN | 1568252096 | Registered Nurse | Anchorage, AK | 2025 |
| Anna O'Leary | 1649957317 | Counselor | Seattle, WA | 2023 |
| Anthony O'Leary, LMHC | 1376195073 | Mental Health Counselor | Tumwater, WA | 2019 |
| Anthony O'Leary, MB,BS | 1467447722 | Anesthesiology Physician | Albany, NY | 2005 |
| Arthur O'Leary, M.D. | 1972666899 | Psychiatry Physician | Tiffin, OH | 2006 |
| Ashley O'Leary, RBT | 1306655725 | Behavior Technician | Carol Stream, IL | 2024 |
| Ashlyn O'Leary | 1942094115 | Student in an Organized Health Care Education/Training Program | Dallas, TX | 2025 |
| Bernadette O'Leary, PSYD | 1124147863 | Clinical Psychologist | Los Angeles, CA | 2007 |
| Breanne O'Leary, PA | 1295181311 | Physician Assistant | San Diego, CA | 2016 |
| Brenda O'Leary, PH.D. | 1568334043 | Psychologist | Burlington, CT | 2025 |
| Brenda O'Leary | 1730363375 | Occupational Therapy Assistant | Madison, WI | 2007 |
| Brendan O'Leary, MD | 1205539673 | Student in an Organized Health Care Education/Training Program | San Diego, CA | 2023 |
| Brian O'Leary, M.D. | 1255523940 | Interventional Cardiology Physician | Indianapolis, IN | 2007 |
| Brian O'Leary, MD | 1295702439 | Internal Medicine Physician | Naperville, IL | 2006 |
| Brian O'Leary, DMD, MS | 1356569107 | Orthodontics and Dentofacial Orthopedics Dentistry | Irmo, SC | 2007 |
| Brian O'Leary | 1811235088 | Rehabilitation Practitioner | Las Vegas, NV | 2013 |
| Briana O'Leary, MD | 1154825339 | Maternal & Fetal Medicine Physician | Boston, MA | 2018 |
| Brianne O'Leary, CSFA | 1881215416 | Surgical Assistant | Aurora, IL | 2020 |
| Bridget O'Leary, PA-C | 1215567995 | Physician Assistant | Benton, AR | 2020 |
| Brielyn O'Leary | 1689023673 | Speech-Language Pathologist | Brockton, MA | 2016 |
| Brittni O'Leary | 1407314776 | Maternal Newborn Registered Nurse | Cincinnati, OH | 2019 |
| Brooklynn O'Leary, RN, BSN | 1538082532 | Registered Nurse | Harrison, AR | 2026 |
| Bryn O'Leary, PT, DPT | 1750173266 | Physical Therapist | Eugene, OR | 2025 |
| Caitlin O'Leary, BA | 1003584004 | Addiction (Substance Use Disorder) Counselor | Fitchburg, MA | 2021 |
| Caitlin O'Leary, ARNP, DNP | 1154885879 | Acute Care Nurse Practitioner | Seattle, WA | 2019 |
| Caitlyn O'Leary | 1275079022 | Counselor | Springfield, MA | 2017 |
| Callie O'Leary, PT, DPT | 1790345163 | Physical Therapist | Woodstock, GA | 2019 |
| Carol O'Leary, RN, CS, NP-C | 1184627424 | Family Nurse Practitioner | Front Royal, VA | 2005 |
| Carol O'Leary, P.T. | 1528118742 | Physical Therapist | Hazlet, NJ | 2007 |
| Carol Anne O'Leary, APRN, PNP | 1225126832 | Pediatric Nurse Practitioner | Watertown, MA | 2006 |
| Caroline O'Leary, MD | 1619712064 | Pediatrics Physician | Charleston, SC | 2024 |
| Carolyn O'Leary | 1396389045 | Physical Therapist | Holden, MA | 2019 |
| Carolyn O'Leary | 1427400894 | Certified Registered Nurse Anesthetist | Pittsburgh, PA | 2016 |
| Carrie O'Leary, MA | 1174049969 | Marriage & Family Therapist | Los Gatos, CA | 2017 |
| Carson O'Leary | 1588434542 | Behavior Technician | Arlington, VA | 2024 |
| Casey O'Leary | 1952818221 | Student in an Organized Health Care Education/Training Program | Edmond, OK | 2018 |
| Catherine O'Leary | 1356145296 | Student in an Organized Health Care Education/Training Program | Atlanta, GA | 2025 |
| Catherine O'Leary, LCPC | 1942953591 | Professional Counselor | Salisbury, MD | 2022 |
| Cathleen O'Leary, LCPC | 1962876235 | Professional Counselor | Oak Brook, IL | 2015 |
| Cecily O'Leary, LCSW | 1871384693 | Clinical Social Worker | Warwick, RI | 2025 |
| Chad O'Leary, DDS | 1053898098 | Dentist | Clayton, NC | 2018 |
| Chandler O'Leary, DO | 1609619089 | Internal Medicine Physician | Galveston, TX | 2024 |
| Christa O'Leary, D.O. | 1750326112 | Family Medicine Physician | Fredericksburg, TX | 2006 |
| Christina O'Leary, APRN | 1942914601 | Pediatric Nurse Practitioner | Schertz, TX | 2023 |
| Christine O'Leary, ATC, LAT | 1033674528 | Athletic Trainer | Mentor, OH | 2019 |
| Christine O'Leary, SLP | 1447528989 | Speech-Language Pathologist | Billings, MT | 2011 |
| Christine O'Leary | 1790350221 | Prevention Professional | Fort Wayne, IN | 2021 |
| Christine O'Leary | 1942678255 | Social Worker | Albuquerque, NM | 2015 |
| Colin O'Leary, MD | 1588153456 | Internal Medicine Physician | Boston, MA | 2018 |
| Colin O'Leary, DC | 1841084647 | Chiropractor | Raleigh, NC | 2025 |
| Colleen O'Leary, PA-C | 1144581208 | Physician Assistant | Chesapeake, VA | 2012 |
| Colleen O'Leary, RN, AOCNS | 1457658973 | Oncology Registered Nurse | Villa Park, IL | 2011 |
| Colleen O'Leary, M.S., L.P. | 1669484705 | Psychologist | Courtland, MN | 2006 |
| Colleen O'Leary | 1891766390 | Anesthesiology Physician | Syracuse, NY | 2006 |
| Collette O'Leary | 1841166857 | Registered Nurse | Waterloo, IL | 2025 |
| Collin O'Leary, MS | 1891492336 | Counselor | Tulsa, OK | 2023 |
| Cornelius O'Leary, M.D. | 1871707513 | General Practice Physician | Honolulu, HI | 2007 |
| Daniel O'Leary, D.C. | 1093035537 | Chiropractor | Jacksonville, FL | 2010 |
| Daniel O'Leary | 1255778551 | Physician Assistant | Leominster, MA | 2013 |
| Daniel O'Leary, M.D. | 1376565606 | Emergency Medicine Physician | Port Charlotte, FL | 2006 |
| Daniel O'Leary, M.D. | 1447346531 | Internal Medicine Physician | Leominster, MA | 2006 |
| Daniel O'Leary, CSA | 1508977737 | Surgery Physician | Aurora, CO | 2006 |
| Daniel O'Leary, DPT | 1720414717 | Physical Therapist | Massapequa, NY | 2013 |
| Daniel O'Leary, D.D.S. | 1821254541 | General Practice Dentistry | Salem, OR | 2008 |
| Daniel O'Leary, M.D. | 1841398385 | Diagnostic Radiology Physician | Dorchester, MA | 2006 |
| Daniel O'Leary, MD | 1851748685 | Hematology & Oncology Physician | Minneapolis, MN | 2016 |
| Daniel O'Leary | 1962292821 | Mental Health Counselor | Olympia, WA | 2025 |
| Danielle O'Leary, LSW | 1992598551 | Social Worker | Erie, PA | 2025 |
| Daphne O'Leary, MHC-LP | 1245181080 | Mental Health Counselor | New York, NY | 2026 |
| David O'Leary | 1316627540 | Mental Health Counselor | Essex Junction, VT | 2023 |
| David O'Leary, O.D. | 1578539334 | Optometrist | Birmingham, AL | 2006 |
| Dawn O'Leary, PTA | 1871969295 | Physical Therapy Assistant | Liberty, TX | 2015 |
| Deborah O'Leary, SLP | 1528234283 | Speech-Language Pathologist | Jacksonville, FL | 2008 |
| Dena O'Leary, MD | 1457532046 | Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician | Edmond, OK | 2007 |
| Deniece O'Leary, PA-C | 1104099233 | Medical Physician Assistant | Batavia, NY | 2008 |
| Dennis O'Leary, D.D.S. | 1225184229 | General Practice Dentistry | Washington, DC | 2007 |
| Devon O'Leary | 1336779883 | Case Manager/Care Coordinator | Eureka, CA | 2020 |
| Dorothy O'Leary, MFT | 1699904425 | Mental Health Counselor | San Rafael, CA | 2009 |
| Eamon O'Leary | 1366287294 | Community Health Worker | Lexington, MA | 2024 |
| Edmond O'Leary, DO | 1811524887 | Hospice and Palliative Medicine (Internal Medicine) Physician | Richmond, IN | 2020 |
| Edward O'Leary, M.D. | 1285977082 | Clinical Cardiac Electrophysiology Physician | Boston, MA | 2013 |
| Edward O'Leary, DDS | 1730102906 | Dentist | Peabody, MA | 2006 |
| Edward O'Leary, MD | 1841210747 | Family Medicine Physician | Scottsdale, AZ | 2006 |
| Eileen O'Leary | 1740021062 | Pharmacist | Wildwood, FL | 2024 |
| Elena O'Leary | 1154254217 | Interpreter | Cypress, TX | 2026 |
| Elizabeth O'Leary, CWC | 1033097571 | Health & Wellness Coach | Eureka, CA | 2025 |
| Elizabeth O'Leary | 1134426117 | Speech-Language Pathologist | Parsippany, NJ | 2011 |
| Elizabeth O'Leary, M.D., M.H.S. | 1174782528 | Surgery Physician | Bloomington, MN | 2008 |
| Elizabeth O'Leary | 1376219311 | Occupational Therapist | Saint Louis, MO | 2021 |
| Elizabeth O'Leary, MHC-LP | 1477325850 | Mental Health Counselor | New York, NY | 2023 |
| Elizabeth O'Leary | 1568331411 | School Counselor | Portland, OR | 2025 |
| Elizabeth O'Leary, PA-C | 1639115553 | Physician Assistant | Cary, NC | 2006 |
| Ellen O'Leary | 1841130820 | Marriage & Family Therapist | Austin, TX | 2026 |
| Emily O'Leary, PT | 1962917179 | Physical Therapist | Oak Brook, IL | 2017 |
| Emma O'Leary, PA-C | 1861327058 | Medical Physician Assistant | Peoria, AZ | 2026 |
| Emmeline O'Leary, MD | 1619150661 | Anesthesiology Physician | Milwaukee, WI | 2007 |
| Emmett O'Leary, PH.D. | 1922316108 | Speech-Language Pathologist | Ordway, CO | 2010 |
| Erika O'Leary, D.C. | 1700298510 | Chiropractor | Bremerton, WA | 2014 |
| Erin O'Leary, CTRS | 1104682905 | Recreation Therapist | Farmington Hills, MI | 2024 |
| Erin O'Leary, M.D. | 1255467833 | Anatomic Pathology & Clinical Pathology Physician | Fall River, MA | 2007 |
| Erin O'Leary | 1508593575 | Developmental Therapist | Georgetown, MA | 2022 |
| Erin O'Leary | 1528355617 | Psychiatric/Mental Health Nurse Practitioner | Portland, OR | 2011 |
| Erin O'Leary, PHARMD | 1528452976 | Pharmacist | Sioux Falls, SD | 2015 |
| Erin O'Leary, M.S., CCC-SLP | 1538882790 | Speech-Language Pathologist | Hanover, MA | 2022 |
| Erin O'Leary, M.D. | 1740577535 | Pediatrics Physician | Santee, CA | 2011 |
| Ethan O'Leary | 1326785015 | Counselor | Framingham, MA | 2022 |
| Eugene O'Leary, O.D. | 1497853915 | Optometrist | Reading, MA | 2006 |
| Franchesca O'Leary, DPT | 1982361218 | Physical Therapist | Boca Raton, FL | 2021 |
| Georgeann O'Leary | 1508926395 | Family Nurse Practitioner | Ewing, NJ | 2006 |
| Georgette O'Leary, BMS | 1558680884 | Case Manager/Care Coordinator | Santa Fe, NM | 2010 |
| Georgia O'Leary | 1710827761 | Student in an Organized Health Care Education/Training Program | Winston Salem, NC | 2026 |
| Gerald O'Leary, MA, MT-BC, LPC | 1629257407 | Music Therapist | Havertown, PA | 2007 |
| Giannina O'Leary | 1790627057 | Interpreter | Storrs Mansfield, CT | 2026 |
| Grace O'Leary, LCSW, MT-BC, CT | 1659895969 | Clinical Social Worker | Glendale, AZ | 2017 |
| Gregory O'Leary, MD | 1306866579 | Family Medicine Physician | Gastonia, NC | 2006 |
| Gwyn O'Leary | 1033488325 | Mental Health Counselor | Salinas, CA | 2011 |
| Haley O'Leary | 1780287243 | Behavior Technician | Costa Mesa, CA | 2020 |
| Hannah O'Leary | 1063221729 | Behavior Technician | Oceanside, CA | 2025 |
| Hannah O'Leary, RPH | 1770035818 | Pharmacist | Oregon City, OR | 2016 |
| Hannah O'Leary | 1801728936 | Student in an Organized Health Care Education/Training Program | Phoenix, AZ | 2026 |
| Hannah O'Leary, DNP, FNP-C | 1891284568 | Family Nurse Practitioner | Minneapolis, MN | 2018 |
| Heather O'Leary, PHD | 1154676427 | Counseling Psychologist | New York, NY | 2012 |
| Heather O'Leary | 1538404504 | Registered Nurse | Lorain, OH | 2012 |
| Helen O'Leary, MD | 1548205925 | Anesthesiology Physician | Louisville, KY | 2006 |
| Helen O'Leary | 1588318398 | Student in an Organized Health Care Education/Training Program | Atlanta, GA | 2022 |
| Ines O'Leary, RDH | 1104177328 | Dental Hygienist | Walnut Creek, CA | 2012 |
| Ivana O'Leary, APRN | 1801421771 | Family Nurse Practitioner | Orlando, FL | 2020 |
| Jacob O'Leary | 1215443908 | Behavior Technician | Colorado Springs, CO | 2017 |
| Jacqueline O'Leary, MD, MPH | 1336121565 | Gastroenterology Physician | Dallas, TX | 2005 |
| Jacqueline O'Leary, MD | 1649375197 | Pediatrics Physician | San Jose, CA | 2006 |
| James O'Leary, MD | 1245369099 | Obstetrics & Gynecology Physician | Jacksonville Beach, FL | 2007 |
| James O'Leary, MD | 1326734674 | Student in an Organized Health Care Education/Training Program | Boston, MA | 2023 |
| James O'Leary, M.D. | 1336371012 | Medical Oncology Physician | Waltham, MA | 2009 |
| James O'Leary, M.D. | 1346241502 | Sports Medicine (Orthopaedic Surgery) Physician | Columbia, SC | 2005 |
| James O'Leary, MD | 1922021872 | Cardiovascular Disease Physician | New Orleans, LA | 2006 |
| James O'Leary, ATC | 1982155727 | Athletic Trainer | Lorain, OH | 2016 |
| Jane O'Leary, N.P. | 1649577735 | Obstetrics & Gynecology Nurse Practitioner | Buffalo, NY | 2011 |
| Jared O'Leary, M.D. | 1760702658 | Interventional Cardiology Physician | Nashville, TN | 2010 |
| Jean O'Leary | 1669933024 | Case Manager/Care Coordinator | Nashua, NH | 2019 |
| Jenna O'Leary | 1962082271 | Pediatrics Physician | Cherry Hill, NJ | 2021 |
| Jenna-Marie O'Leary | 1548538812 | Social Worker | Northport, NY | 2011 |
| Jennifer O'Leary, LPCC-S | 1184983132 | Professional Counselor | Columbus, OH | 2012 |
| Jennifer O'Leary, APN | 1588554927 | Adult Health Nurse Practitioner | Aurora, CO | 2025 |
| Jennifer O'Leary, LCSW/LICSW | 1669982831 | Clinical Social Worker | San Jose, CA | 2017 |
| Jennifer O'Leary | 1679341820 | Speech-Language Pathologist | Golden, CO | 2023 |
| Jennifer O'Leary, OTRL | 1720643547 | Occupational Therapist | Spring Lake, NC | 2019 |
| Jennifer O'Leary, ND | 1932273885 | Naturopath | Milwaukie, OR | 2006 |
| Jessica O'Leary, RDH | 1225810278 | Dental Hygienist | Waukesha, WI | 2023 |
| Jessica O'Leary, PHD | 1467979658 | Clinical Psychologist | Los Angeles, CA | 2017 |
| Jessica O'Leary | 1992284822 | Occupational Therapist | Midland, MI | 2018 |
| Jessie O'Leary, PT, DPT | 1376996157 | Physical Therapist | South Bend, IN | 2016 |
| Joan O'Leary, LCSW | 1285858183 | Clinical Social Worker | Millburn, NJ | 2007 |
| Joan O'Leary, APN | 1831558170 | Primary Care Nurse Practitioner | Jersey City, NJ | 2016 |
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).