Providers Vicki O'Grady, MA, LMHC, NCC to Miles O'Hanlon, M.D.
300 individual NPIs in the federal registry, part 16,030 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. 108 link to a page of their own with Medicare and CMS data the registry does not carry.
| Provider | NPI | Specialty | Practice city | NPI issued |
|---|---|---|---|---|
| Vicki O'Grady, MA, LMHC, NCC | 1679666267 | Counselor | Maitland, FL | 2006 |
| William O'Grady, DPT | 1043253032 | Physical Therapist | Puyallup, WA | 2006 |
| William O'Grady, M.D. | 1063514610 | Dermatology Physician | Toms River, NJ | 2006 |
| William O'Grady, M.D. | 1417931650 | Diagnostic Radiology Physician | Alexandria, VA | 2005 |
| Wyatt O'Grady, D.D.S. | 1740733344 | General Practice Dentistry | Granbury, TX | 2016 |
| Kathryn O'Grady Tabor, APRN | 1770397465 | Family Nurse Practitioner | Norfolk, VA | 2025 |
| Kathleen O'Grady-Graham, OTR/L | 1841544756 | Pediatric Occupational Therapist | Burien, WA | 2012 |
| Sheila O'Grady-Irwin, MD, FACP | 1942285283 | Internal Medicine Physician | Greenville, SC | 2005 |
| Colleen O'Grady-Long, LPC | 1447284468 | Marriage & Family Therapist | Houston, TX | 2006 |
| Tracy O'Grady-Palmatier, RD, LDN | 1467873612 | Registered Dietitian | Siler City, NC | 2013 |
| Shannon O'Grady-Ragsdale | 1679108807 | Social Worker | Tampa, FL | 2020 |
| Erin O'Grodnick, D.M.D. | 1114248846 | Dentist | Lebanon, NJ | 2010 |
| Carla O'Guin | 1255560074 | Developmental Therapist | Louisa, KY | 2009 |
| Crystal O'Guin, CRNA | 1306293501 | Certified Registered Nurse Anesthetist | Memphis, TN | 2016 |
| Dalawna O'Guin, PH.D. | 1407190531 | Mental Health Counselor | Tulsa, OK | 2012 |
| Dena O'Guin, BCBA | 1992034029 | Behavior Analyst | Tulsa, OK | 2009 |
| Elizabeth O'Guin | 1801460373 | Behavior Technician | Plymouth, MI | 2021 |
| Jeffrey O'Guin, D.C. | 1588812663 | Chiropractor | Kirkwood, MO | 2008 |
| Jhanae O'Guin | 1891498689 | Student in an Organized Health Care Education/Training Program | Nashville, TN | 2023 |
| Jon O'Guin | 1477860377 | Case Manager/Care Coordinator | Hood River, OR | 2010 |
| Leigh O'Guin, NP | 1285069534 | Adult Health Nurse Practitioner | Atlanta, GA | 2013 |
| Megan O'Guin | 1417136714 | Social Worker | Pontiac, MI | 2007 |
| Natalie O'Guin, M.S. | 1730443979 | Speech-Language Pathologist | Saint Louis, MO | 2012 |
| Stephanie O'Guin, LCSW | 1427931658 | Clinical Social Worker | Indianapolis, IN | 2025 |
| Amanda O'Guinn, NP | 1770127086 | Family Nurse Practitioner | Grand Blanc, MI | 2019 |
| Amber O'Guinn | 1326868977 | Social Worker | Wylie, TX | 2024 |
| Christina O'Guinn, FNP | 1265048151 | Family Nurse Practitioner | Portland, OR | 2020 |
| Devon O'Guinn, M.D., M.S. | 1215381116 | Vascular & Interventional Radiology Physician | Miami, FL | 2016 |
| Eric O'Guinn, CPO | 1992992309 | Prosthetist | Soldotna, AK | 2007 |
| Justin O'Guinn, MD | 1457589137 | Orthopaedic Surgery Physician | Huntersville, NC | 2009 |
| Kristin O'Guinn, BCBA | 1861992059 | Behavior Analyst | Atlanta, GA | 2018 |
| Makayla O'Guinn, DO | 1437773421 | Surgery Physician | Des Moines, IA | 2020 |
| Sasha O'Guinn, LMSW | 1093280554 | Social Worker | Jonesboro, AR | 2018 |
| Tamera O'Guinn, RN | 1336659804 | Mental Health Counselor | Junction City, OR | 2017 |
| Jo O'Guinn-Charles, NP | 1144577586 | Gerontology Nurse Practitioner | El Dorado, AR | 2012 |
| Heather O'Gurek, IBCLC | 1659220085 | Lactation Consultant (Non-RN) | Summit Hill, PA | 2026 |
| Reginald O'Gwin, LPC-A, LCDC | 1770189094 | Professional Counselor | Austin, TX | 2020 |
| Rita O'Gwin, LSCSW | 1538462239 | Clinical Social Worker | Great Bend, KS | 2010 |
| Sally O'Gwin-Gentry, LPC | 1619083300 | Mental Health Counselor | San Antonio, TX | 2006 |
| Adrian O'Hagan, M.D. | 1467413658 | Pediatric Pulmonology Physician | Louisville, KY | 2006 |
| Alissa O'Hagan, M.D. | 1376874040 | Obstetrics & Gynecology Physician | Traverse City, MI | 2010 |
| Andrew O'Hagan, M.D. | 1588958813 | Psychiatry Physician | New York, NY | 2011 |
| Angie O'Hagan, MSW, LCSW | 1912030545 | Clinical Social Worker | Cape May Court House, NJ | 2007 |
| Bethany O'Hagan | 1467110221 | Counselor | Aberdeen, WA | 2021 |
| Cevin O'Hagan, LPT | 1730318114 | Licensed Psychiatric Technician | Santa Cruz, CA | 2009 |
| Charles O'Hagan, PHARMD | 1063852416 | Pharmacist | Oshkosh, WI | 2013 |
| Christopher O'Hagan, CRNA | 1275599326 | Certified Registered Nurse Anesthetist | Bingham Farms, MI | 2006 |
| Daniel O'Hagan, RPH | 1053697359 | Pharmacist | Westminster, CO | 2011 |
| Danielle O'Hagan | 1164840138 | Specialist | Melville, NY | 2014 |
| Denise O'Hagan, P.T. | 1700019262 | Physical Therapist | San Diego, CA | 2009 |
| Destiny O'Hagan | 1154972370 | Behavior Technician | Seaford, DE | 2019 |
| Elizabeth O'Hagan, ARNP, FNP-C | 1881166536 | Nurse Practitioner | Orlando, FL | 2018 |
| Erin O'Hagan, PA-C | 1346411097 | Surgical Physician Assistant | Pennington, NJ | 2008 |
| Erin O'Hagan, D.P.T | 1518259951 | Physical Therapist | Cedar Park, TX | 2011 |
| Gary O'Hagan, M.D. | 1487629879 | Family Medicine Physician | Roanoke, VA | 2006 |
| Hannah O'Hagan, MD | 1942056643 | Internal Medicine Physician | Chicago, IL | 2024 |
| Jeanine O'Hagan, N.P. | 1679914360 | Family Nurse Practitioner | Brooklyn, NY | 2013 |
| Jennifer O'Hagan, PHARM.D. | 1306126172 | Pharmacist | Rhinelander, WI | 2011 |
| John O'Hagan, M.A. | 1164717229 | Student in an Organized Health Care Education/Training Program | San Francisco, CA | 2011 |
| Johnathon O'Hagan, M.D | 1972899086 | Obstetrics & Gynecology Physician | Fort Belvoir, VA | 2011 |
| Kaitlin O'Hagan, OTR/L | 1184130445 | Occupational Therapist | San Diego, CA | 2017 |
| Kaitlin O'Hagan, DO | 1679196463 | Student in an Organized Health Care Education/Training Program | Lubbock, TX | 2020 |
| Katherine O'Hagan, OTR/L | 1891578670 | Occupational Therapist | Westbury, NY | 2023 |
| Kelsey O'Hagan, MD | 1336899616 | Student in an Organized Health Care Education/Training Program | Chicago, IL | 2022 |
| Kerry O'Hagan, P.T. | 1871747055 | Pediatric Physical Therapist | Floral Park, NY | 2008 |
| Kevin O'Hagan | 1497308688 | Chiropractor | Rochester, NY | 2019 |
| Kyle O'Hagan | 1285277699 | Registered Nurse | Santa Cruz, CA | 2019 |
| Lauren O'Hagan, D.M.D. | 1598183253 | General Practice Dentistry | Delray Beach, FL | 2014 |
| Lennon O'Hagan, B.S., B.A. | 1205673076 | Counselor | Jamaica Plain, MA | 2024 |
| Lisa O'Hagan, CRNA | 1275640377 | Certified Registered Nurse Anesthetist | Dearborn, MI | 2006 |
| Margarete O'Hagan, M.D. | 1801824966 | Family Medicine Physician | Whitinsville, MA | 2006 |
| Marion O'Hagan, APRN | 1871858621 | Family Nurse Practitioner | Louisville, KY | 2012 |
| Mary Beth O'Hagan, PHD | 1104494301 | Clinical Psychologist | Denver, CO | 2021 |
| Maurene O'Hagan, LMHC, CASAC, NCC | 1376420356 | Mental Health Counselor | Smithtown, NY | 2025 |
| Michael O'Hagan, P.A. | 1346579448 | Medical Physician Assistant | Watertown, NY | 2009 |
| Molly O'Hagan, PA-C | 1063118354 | Physician Assistant | Bronx, NY | 2023 |
| Paige O'Hagan | 1871076505 | Mental Health Counselor | Denver, CO | 2018 |
| Patricia O'Hagan, LADC1 | 1649559527 | Addiction (Substance Use Disorder) Counselor | East Boston, MA | 2011 |
| Patrick O'Hagan, PA-C | 1679114847 | Medical Physician Assistant | Traverse City, MI | 2019 |
| Rachel O'Hagan, MA CCC-SLP | 1598912396 | Speech-Language Pathologist | Bethlehem, PA | 2008 |
| Riley O'Hagan, D.P.T. | 1407150261 | Physical Therapist | Tacoma, WA | 2011 |
| Ross O'Hagan, MD | 1194411488 | Student in an Organized Health Care Education/Training Program | Middletown, NY | 2023 |
| Ryan O'Hagan, AGACNP-BC | 1750954814 | Critical Care Medicine Nurse Practitioner | Augusta, GA | 2021 |
| Sarabeth O'Hagan | 1760204903 | Athletic Trainer | Staten Island, NY | 2024 |
| Shannon O'Hagan, PT | 1003818253 | Physical Therapist | El Cajon, CA | 2005 |
| Stephanie O'Hagan, MS, DPT | 1790832434 | Physical Therapist | Lincolnton, NC | 2007 |
| Suzanne O'Hagan, M.S. CCC-SLP | 1689192346 | Speech-Language Pathologist | Nampa, ID | 2017 |
| Thomas O'Hagan, M.D. | 1124273958 | Sports Medicine (Orthopaedic Surgery) Physician | Traverse City, MI | 2008 |
| Tiffany O'Hagan, PHARM D. | 1134569585 | Pharmacist | Fond Du Lac, WI | 2013 |
| Christine O'Hagan Carlin, RPA-C | 1639197130 | Physician Assistant | Belle Harbor, NY | 2006 |
| Theresa O'Hagan-Kelly | 1639680077 | Other Specialist/Technologist | Forest Hills, NY | 2017 |
| Kathryn O'Hagan-Krowas, LMSW | 1578697397 | Social Worker | Kansas City, KS | 2007 |
| Margaret O'Hagan-Lynch, LPC | 1659576502 | Professional Counselor | Wallingford, CT | 2007 |
| Karen O'Hagen, DPT | 1285772814 | Physical Therapist | East Setauket, NY | 2007 |
| Sarah O'Hagen, OTR/L | 1568130318 | Occupational Therapist | Colorado Springs, CO | 2021 |
| Sean O'Hagen, PH.D. | 1407049786 | Psychologist | Vestal, NY | 2007 |
| Brandi O'Hair | 1851780068 | Physical Therapy Assistant | Wichita, KS | 2015 |
| Brenda O'Hair, PA-C | 1386617504 | Physician Assistant | Lakeland, FL | 2006 |
| Brian O'Hair, CRNA | 1457310294 | Certified Registered Nurse Anesthetist | Brawley, CA | 2006 |
| Daniel O'Hair, M.D. | 1851370852 | Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician | Fort Myers, FL | 2006 |
| Danielle O'Hair, DO | 1245678101 | Physical Medicine & Rehabilitation Physician | Reno, NV | 2013 |
| Elizabeth O'Hair, SLP | 1497301105 | Speech-Language Pathologist | Wichita, KS | 2019 |
| Emily O'Hair | 1891579553 | School Nurse Practitioner | Seattle, WA | 2023 |
| Erin O'Hair, NP | 1710259361 | Primary Care Nurse Practitioner | Berkeley, CA | 2012 |
| James O'Hair, MD | 1225188014 | Emergency Medicine Physician | Pawtucket, RI | 2007 |
| Janet O'Hair, LISW | 1003967498 | Social Worker | Cincinnati, OH | 2007 |
| Jessica O'Hair | 1871115097 | Professional Counselor | Phoenix, AZ | 2020 |
| Kaitlynn O'Hair | 1932912227 | Behavior Technician | West Lafayette, IN | 2025 |
| Kim O'Hair, NP | 1902848013 | Nurse Practitioner | San Francisco, CA | 2006 |
| Kristin O'Hair | 1588130215 | Social Worker | Lebanon, OH | 2018 |
| Laura O'Hair | 1982961652 | Case Manager/Care Coordinator | Albany, OR | 2012 |
| Melinda O'Hair | 1659720597 | Clinical Social Worker | Dodge City, KS | 2016 |
| Rebecca O'Hair | 1578170890 | Psychiatric/Mental Health Nurse Practitioner | Nicholasville, KY | 2020 |
| Ron O'Hair | 1093846982 | Counselor | Morehead, KY | 2007 |
| Stacy O'Hair | 1821321696 | Social Worker | Howell, MI | 2009 |
| Stephan O'Hair | 1114206133 | Mental Health Counselor | Eugene, OR | 2011 |
| Stephanie O'Hair | 1659826568 | Behavior Analyst | Ashland, OR | 2016 |
| Victoria O'Hair, OTR/L | 1245473750 | Occupational Therapist | Windsor, KY | 2009 |
| Ashleigh O'Haire | 1992692644 | Counselor | Allston, MA | 2025 |
| Chelsea O'Haire | 1013319169 | Clinical Child & Adolescent Psychologist | Los Angeles, CA | 2014 |
| Christian O'Haire, PHD, CNM, RN | 1982949723 | Advanced Practice Midwife | Salem, OR | 2012 |
| John O'Haire | 1104754357 | Mental Health Counselor | Quincy, MA | 2026 |
| Kimberly O'Haire, NP | 1346811007 | Family Nurse Practitioner | Cumming, GA | 2021 |
| Peyton O'Haire, RD | 1982477220 | Registered Dietitian | Largo, FL | 2023 |
| Stephen O'Haire, DC | 1982314597 | Chiropractor | Smyrna, GA | 2022 |
| Virginia O'Haire | 1033411012 | Counselor | West Palm Beach, FL | 2010 |
| Amanda O'Hala, PA-C | 1831643105 | Family Medicine Physician | Eugene, OR | 2016 |
| Joseph O'Hala, PA-C | 1306346804 | Physician Assistant | Eugene, OR | 2018 |
| Julia O'Halla | 1801625595 | Counselor | Northglenn, CO | 2024 |
| Sarah O'Halla, MA, LPC | 1154991461 | Professional Counselor | Grosse Pt Frm, MI | 2021 |
| Reva O'Hallarn, PSY. D. | 1427245588 | Clinical Psychologist | Newport News, VA | 2007 |
| Helen O'Hallaron, MD | 1164411856 | Pediatrics Physician | Pittsburgh, PA | 2005 |
| Maureen O'Hallaron, M.D. | 1689624462 | Internal Medicine Physician | Asheville, NC | 2006 |
| Lauren O'Halleran | 1225440803 | Specialist | Garden City, NY | 2014 |
| Michael O'Halleran, D.C. | 1043345978 | Chiropractor | Massapequa, NY | 2007 |
| Michael O'Halleran, MD | 1043672835 | Pediatrics Physician | Brooklyn, NY | 2016 |
| Abby O'Halloran | 1447640073 | Physical Therapy Assistant | Aurora, CO | 2015 |
| Alexis O'Halloran | 1861217754 | Registered Nurse | Nashville, TN | 2024 |
| Alice O'Halloran | 1780766717 | Physical Therapist | North Bergen, NJ | 2006 |
| Allison O'Halloran, PMHNP | 1619682317 | Psychiatric/Mental Health Nurse Practitioner | North St Paul, MN | 2023 |
| Amanda O'Halloran, NP | 1265109870 | Family Nurse Practitioner | Springfield, MA | 2021 |
| Amanda O'Halloran, M.D. | 1548687650 | Pediatric Critical Care Medicine Physician | Philadelphia, PA | 2014 |
| Andrew O'Halloran, D.O. | 1265548028 | Anesthesiology Physician | Atlantis, FL | 2006 |
| Andrew O'Halloran, MD | 1740713775 | Physical Medicine & Rehabilitation Physician | Winchester, VA | 2017 |
| Anna O'Halloran, DT | 1619665783 | Developmental Therapist | Vernon Hills, IL | 2023 |
| Anne O'Halloran, LMSW | 1255570446 | Clinical Social Worker | Brooklyn, NY | 2009 |
| Ava O'Halloran | 1528981412 | Behavior Technician | Cottonwood Heights, UT | 2026 |
| Becky O'Halloran, M.A. | 1154744530 | Marriage & Family Therapist | Overland Park, KS | 2014 |
| Brian O'Halloran, PHARMD | 1013160498 | Pharmacist | Gilbert, AZ | 2008 |
| Brian O'Halloran, D.O. | 1427085687 | Family Medicine Physician | Port Charlotte, FL | 2006 |
| Bridget O'Halloran, DPT | 1093959199 | Physical Therapist | Burlington, MA | 2009 |
| Bryan O'Halloran, P.T. SCS, OCS | 1295799914 | Physical Therapist | Havertown, PA | 2006 |
| Carmen O'Halloran, PHARM.D. | 1073806113 | Pharmacist | Grand Forks, ND | 2011 |
| Carolyn O'Halloran, SLP | 1487848636 | Speech-Language Pathologist | Lawrenceville, GA | 2007 |
| Casey O'Halloran, PHARMD. | 1104108935 | Pharmacist | Pawtucket, RI | 2011 |
| Catherine O'Halloran, N.D. | 1174876593 | Naturopath | Boston, MA | 2012 |
| Cheryl O'Halloran, ARNP | 1063635308 | Critical Care Neonatal Nurse Practitioner | Kansas City, KS | 2007 |
| Christina O'Halloran, PHD, LCSW | 1073903050 | Clinical Social Worker | Santa Cruz, CA | 2015 |
| Christina O'Halloran, PT, DPT | 1861324949 | Orthopedic Physical Therapist | North Wildwood, NJ | 2026 |
| Christopher O'Halloran, D.O. | 1538123187 | Family Medicine Physician | Huntsville, AL | 2006 |
| Claire O'Halloran, CNM, APN | 1538903711 | Advanced Practice Midwife | Colorado Springs, CO | 2024 |
| Conor O'Halloran | 1265894141 | Pediatric Cardiology Physician | Chicago, IL | 2016 |
| Corey O'Halloran | 1487161683 | Mental Health Counselor | Ellenville, NY | 2018 |
| Crystal O'Halloran, LCSWA | 1508697517 | Clinical Social Worker | Raleigh, NC | 2024 |
| Cynthia O'Halloran, RN | 1932649688 | School Registered Nurse | Staten Island, NY | 2017 |
| Danae O'Halloran | 1003776915 | Family Nurse Practitioner | Lakewood Ranch, FL | 2025 |
| Daniel O'Halloran, LMSW | 1710812359 | Social Worker | Sacaton, AZ | 2026 |
| Devyn O'Halloran | 1063041929 | Behavior Technician | Willmar, MN | 2020 |
| Dorothy O'Halloran, LCPC | 1619007481 | Professional Counselor | Wheaton, IL | 2007 |
| Eileen O'Halloran, M.D. | 1447549571 | Surgery Physician | Saint Louis, MO | 2011 |
| Elaina O'Halloran | 1437614260 | Case Manager/Care Coordinator | Thibodaux, LA | 2019 |
| Elizabeth O'Halloran, CRNP | 1184688160 | Family Nurse Practitioner | Huntsville, AL | 2006 |
| Elizabeth O'Halloran, M.D. | 1659580769 | Family Medicine Physician | Spokane, WA | 2007 |
| Ellen O'Halloran, P.A.-C | 1346618071 | Physician Assistant | Santa Cruz, CA | 2015 |
| Erin O'Halloran, LMFT | 1720445430 | Marriage & Family Therapist | Clackamas, OR | 2016 |
| Erin O'Halloran | 1760890651 | Behavior Analyst | Gainesville, FL | 2014 |
| Gerard O'Halloran, MD | 1184684839 | Otolaryngology Physician | Owatonna, MN | 2006 |
| Glen O'Halloran | 1174188213 | Specialist | New York, NY | 2019 |
| Glenna O'Halloran | 1558665315 | Developmental Therapist | Fall River, MA | 2011 |
| Hannah O'Halloran | 1659807022 | Case Manager/Care Coordinator | Somerville, MA | 2017 |
| Henry O'Halloran, M.D. | 1235287947 | Ophthalmology Physician | San Diego, CA | 2007 |
| Jacqueline O'Halloran, LCAT | 1043003718 | Psychoanalyst | Beacon, NY | 2025 |
| James O'Halloran, D.O. | 1912352105 | Emergency Medicine Physician | Staten Island, NY | 2016 |
| Jan O'Halloran | 1033162243 | Addiction (Substance Use Disorder) Counselor | Wichita, KS | 2006 |
| Jennifer O'Halloran, PTA | 1831987155 | Physical Therapy Assistant | Viera, FL | 2025 |
| Jessica O'Halloran | 1720542178 | Mental Health Counselor | Boardman, OH | 2019 |
| John O'Halloran, DPT | 1902849359 | Physical Therapist | Greensboro, NC | 2006 |
| Joseph O'Halloran | 1881440469 | Addiction (Substance Use Disorder) Counselor | Baltimore, MD | 2024 |
| Kaitlin O'Halloran, PT | 1437729126 | Physical Therapist | Austin, TX | 2021 |
| Kara O'Halloran | 1467959452 | Speech-Language Pathologist | Colonia, NJ | 2018 |
| Katie O'Halloran, FNP-BC | 1104427293 | Family Nurse Practitioner | Mattoon, IL | 2020 |
| Katrina O'Halloran, MD | 1538546528 | Pediatric Hematology & Oncology Physician | Los Angeles, CA | 2015 |
| Kerri-Ann O'Halloran, BCBA | 1255778601 | Behavior Analyst | Stewart Manor, NY | 2013 |
| Kevin O'Halloran, MD | 1316243538 | Orthopaedic Surgery Physician | Panama City, FL | 2011 |
| Kevin O'Halloran, MD | 1821007022 | Orthopaedic Surgery Physician | Watertown, WI | 2006 |
| Kimberly O'Halloran | 1518640648 | Driver | Bolton, CT | 2023 |
| Kristen O'Halloran, MS OTL | 1275991416 | Occupational Therapist | Yardley, PA | 2016 |
| Kristen O'Halloran, PT | 1700138856 | Physical Therapist | Newberg, OR | 2012 |
| Kristina O'Halloran | 1538048400 | Peer Specialist | Lowell, MA | 2025 |
| Laura O'Halloran, PA-C | 1477939312 | Medical Physician Assistant | Chicago, IL | 2015 |
| Laura O'Halloran, MD | 1659345338 | Plastic Surgery Physician | Tyler, TX | 2006 |
| Laurence O'Halloran, MD | 1023007044 | Specialist | Annandale, VA | 2005 |
| Laurinda O'Halloran, L.M.P. | 1750543005 | Massage Therapist | Bellingham, WA | 2008 |
| Lawrence O'Halloran, DDS | 1992730006 | General Practice Dentistry | St Louis Park, MN | 2006 |
| Leigh O'Halloran, LSCSW | 1306176045 | Clinical Social Worker | Wichita, KS | 2009 |
| Liam O'Halloran, M.D. | 1093511404 | Student in an Organized Health Care Education/Training Program | Boston, MA | 2025 |
| Lisa O'Halloran, MS, OTR/L | 1144680836 | Pediatric Occupational Therapist | Cleveland, OH | 2016 |
| Lisa O'Halloran, DT | 1568689453 | Developmental Therapist | Elmhurst, IL | 2007 |
| Margaret O'Halloran, CRNA | 1356545248 | Certified Registered Nurse Anesthetist | Fort Myers, FL | 2007 |
| Mary O'Halloran, LP | 1477123511 | Psychologist | Longmont, CO | 2021 |
| Maryanne O'Halloran, MS, RN, CNS | 1801805882 | Clinical Nurse Specialist | Manteca, CA | 2006 |
| Meghan O'Halloran | 1770364952 | Behavior Analyst | Lakewood, CO | 2023 |
| Meghan O'Halloran, M.D. | 1790006138 | Internal Medicine Physician | Maywood, IL | 2010 |
| Melissa O'Halloran, MD | 1851345177 | Obstetrics & Gynecology Physician | Edina, MN | 2006 |
| Michael O'Halloran, M.D. | 1700192879 | Pediatrics Physician | Eau Claire, WI | 2010 |
| Michael O'Halloran, DDS | 1780861641 | General Practice Dentistry | Toms River, NJ | 2008 |
| Michael O'Halloran, LD | 1902387970 | Registered Dietitian | Columbia, MO | 2018 |
| Patricia O'Halloran, MD | 1205958774 | Internal Medicine Physician | Tacoma, WA | 2007 |
| Patricia O'Halloran | 1780097014 | Audiologist | Munster, IN | 2014 |
| Peter O'Halloran, MD | 1245625292 | Vascular & Interventional Radiology Physician | Sayre, PA | 2015 |
| Philip O'Halloran, M.D. | 1306939285 | Occupational Medicine Physician | Warren, MI | 2006 |
| Richard O'Halloran, M.D. | 1528143971 | Urology Physician | Warsaw, IL | 2006 |
| Richard O'Halloran, PHD | 1700997509 | Psychologist | Merritt Island, FL | 2006 |
| Ronald O'Halloran, M.D. | 1841357647 | Anatomic Pathology Physician | Ventura, CA | 2007 |
| Rosemary O'Halloran, PT, DPT, LAT, ATC | 1821720566 | Physical Therapist | Broomall, PA | 2022 |
| Ryan O'Halloran, MD, MS | 1396107488 | Emergency Medicine Physician | White Plains, NY | 2016 |
| Sagina O'Halloran, O.D. | 1386979466 | Optometrist | Portland, OR | 2009 |
| Samantha O'Halloran, CRNP - FNP | 1336973940 | Family Nurse Practitioner | Center Valley, PA | 2024 |
| Sarah O'Halloran, LMFT | 1073190823 | Marriage & Family Therapist | Oxnard, CA | 2021 |
| Sean O'Halloran, OT | 1487778072 | Occupational Therapist | Ardmore, OK | 2007 |
| Sharon O'Halloran, LICSW | 1639110828 | Clinical Social Worker | Delray Beach, FL | 2006 |
| Shealyn O'Halloran, BCBA, LBA | 1861362394 | Behavior Analyst | Syracuse, NY | 2025 |
| Sidnee O'Halloran | 1194537225 | Adult Health Nurse Practitioner | Tampa, FL | 2025 |
| Tayler O'Halloran | 1508724501 | Primary Care Nurse Practitioner | Coral Springs, FL | 2026 |
| Teresita O'Halloran, D.D.S. | 1881990653 | General Practice Dentistry | Strafford, PA | 2011 |
| Terrence O'Halloran | 1891421707 | Physical Therapist | New York, NY | 2022 |
| Theresa O'Halloran, LMHC | 1366912172 | Mental Health Counselor | Brewster, NY | 2018 |
| Theresa O'Halloran, ED.D., LIMHP, CPC | 1730212168 | Mental Health Counselor | Omaha, NE | 2007 |
| Theron O'Halloran, MD | 1093344145 | Obstetrics & Gynecology Physician | Glen Burnie, MD | 2020 |
| Thomas O'Halloran, MB BCH BAO | 1922101294 | Cardiovascular Disease Physician | Boston, MA | 2006 |
| Vincent O'Halloran, LADC | 1326743402 | Addiction (Substance Use Disorder) Counselor | Darien, CT | 2023 |
| Emma O'Halloran Leach, MD | 1063098549 | Family Medicine Physician | Naples, FL | 2021 |
| Stephanie O'Halloran-Wilkerson, PMHNP | 1811630494 | Psychiatric/Mental Health Nurse Practitioner | Springfield, MO | 2022 |
| Amy O'Hana, PHD, LPC | 1376815167 | Professional Counselor | Bend, OR | 2012 |
| Kelley O'Hana, MHC-LP | 1942013370 | Mental Health Counselor | New York, NY | 2025 |
| Christina O'Handley | 1790815967 | Pharmacist | Myrtle Beach, SC | 2007 |
| Elizabeth O'Handley | 1659872075 | Developmental Therapist | Jamaica Plain, MA | 2018 |
| Jennifer O'Handley, OT/L | 1376967141 | Physical Rehabilitation Occupational Therapist | Andover, MA | 2014 |
| Julia O'Handley, NURSE AID | 1760213045 | Nurse's Aide | Hampton, VA | 2024 |
| Logan O'Handley | 1396459038 | Behavior Technician | Rogersville, TN | 2023 |
| Michael O'Handley, DC | 1942751573 | Chiropractor | New York, NY | 2016 |
| Roderick O'Handley | 1265801039 | Mental Health Counselor | Omaha, NE | 2015 |
| Kirk O'Hanison, NP | 1649877663 | Nurse Practitioner | Milwaukee, WI | 2020 |
| Melissa O'Hanison, NP | 1790382323 | Family Nurse Practitioner | West Allis, WI | 2020 |
| Lauren O'Hanlan, APN | 1407213044 | Pediatric Nurse Practitioner | Cherry Hill, NJ | 2016 |
| Lisa O'Hanlan, M.ED CCC-SLP | 1063558187 | Speech-Language Pathologist | Largo, FL | 2007 |
| Mary O'Hanlan, APN | 1386977858 | Nurse Practitioner | Henderson, NV | 2009 |
| Michael O'Hanlan, M.D. | 1700993771 | Rheumatology Physician | Henderson, NV | 2006 |
| Kelly O'Hanley, MD | 1497816003 | Obstetrics & Gynecology Physician | Portland, OR | 2006 |
| Mary O'Hanley, CRNA | 1063417913 | Certified Registered Nurse Anesthetist | Richmond, VA | 2005 |
| Mary O'Hanley, MSW, LICSW | 1104914936 | Clinical Social Worker | Belmont, MA | 2006 |
| Mary O'Hanley | 1598488678 | Addiction (Substance Use Disorder) Counselor | Plymouth, MA | 2022 |
| Peter O'Hanley, MD | 1912933557 | Internal Medicine Physician | Portland, OR | 2006 |
| Skyler O'Hanley | 1770302994 | Behavior Technician | Monrovia, CA | 2024 |
| Amanda O'Hanlon | 1427720945 | Social Worker | Steubenville, OH | 2021 |
| Andrea O'Hanlon, PA-C | 1275826463 | Physician Assistant | Cambridge, OH | 2011 |
| Barbara O'Hanlon, MSW, LCSW | 1710063326 | Clinical Social Worker | Newark, NJ | 2006 |
| Caitlin O'Hanlon | 1134005770 | Mental Health Counselor | Tucson, AZ | 2025 |
| Chelsey O'Hanlon | 1770969040 | Counselor | Berwyn, IL | 2015 |
| Claire O'Hanlon | 1487134946 | Registered Nurse | Brooklyn, NY | 2018 |
| Clare O'Hanlon | 1265983050 | Massage Therapist | East Setauket, NY | 2016 |
| Deanna O'Hanlon, MT | 1841076874 | Massage Therapist | Commack, NY | 2023 |
| Deborah O'Hanlon, RPH | 1376672774 | Pharmacist | Covington, GA | 2007 |
| Donal O'Hanlon, MD | 1548267107 | Psychiatry Physician | Springfield, MA | 2005 |
| Emily O'Hanlon, MT-BC | 1700615572 | Music Therapist | Waterloo, IA | 2024 |
| Erin O'Hanlon, MSW | 1740632132 | Clinical Social Worker | Maitland, FL | 2016 |
| Eugene O'Hanlon, PT, DPT | 1780109546 | Physical Therapist | Athens, TN | 2017 |
| Haylie O'Hanlon, LCSW | 1043884950 | Clinical Social Worker | Sherman Oaks, CA | 2021 |
| James O'Hanlon | 1396678314 | Student in an Organized Health Care Education/Training Program | Morrisville, VT | 2026 |
| Jennifer O'Hanlon | 1508120965 | Specialist | Miller Place, NY | 2012 |
| Jennifer O'Hanlon, OT | 1588010946 | Occupational Therapist | Cleveland, OH | 2016 |
| John O'Hanlon, D.P.M. | 1609846534 | Podiatrist | Somers, NY | 2006 |
| Joseph O'Hanlon, D.O. | 1427287325 | Surgery Physician | Cambridge, OH | 2009 |
| Justin O'Hanlon, LCSW | 1992860803 | Clinical Social Worker | Milwaukie, OR | 2006 |
| Kailey O'Hanlon | 1396538062 | Behavior Technician | Huntsville, AL | 2025 |
| Katherine O'Hanlon, M.D. | 1134152275 | Emergency Medicine Physician | Rochester, NY | 2006 |
| Kathleen O'Hanlon, MD | 1538121850 | Family Medicine Physician | Huntington, WV | 2006 |
| Katie O'Hanlon, DNP, CNM | 1114515566 | Psychiatric/Mental Health Nurse Practitioner | Portland, OR | 2020 |
| Kelley O'Hanlon | 1083016059 | Mental Health Counselor | Everett, WA | 2014 |
| Kelly O'Hanlon, MS, LPC | 1841900495 | Professional Counselor | Bethlehem, PA | 2022 |
| Kelsey O'Hanlon | 1891296414 | Speech-Language Pathologist | Virginia Beach, VA | 2018 |
| Kevan O'Hanlon | 1417555665 | Mental Health Counselor | Sitka, AK | 2020 |
| Kristen O'Hanlon, OT/LT | 1598004657 | Occupational Therapist | Ellicott City, MD | 2013 |
| Laureen O'Hanlon, ST | 1447481742 | Speech-Language Pathologist | Davis, CA | 2009 |
| Loretta O'Hanlon, NURSE PRACTIONER | 1215097415 | Psychiatric/Mental Health Nurse Practitioner | Asheville, NC | 2006 |
| Lynn O'Hanlon, MD | 1154389930 | Neonatal-Perinatal Medicine Physician | Omaha, NE | 2006 |
| Meagan O'Hanlon | 1205955051 | Addiction (Substance Use Disorder) Counselor | Hartford, CT | 2007 |
| Megan O'Hanlon | 1104310523 | Athletic Trainer | Mt Pleasant, MI | 2018 |
| Melanie O'Hanlon | 1225658065 | Physical Therapist | Raleigh, NC | 2020 |
| Miles O'Hanlon, M.D. | 1558388538 | Psychiatry Physician | Rhinelander, WI | 2006 |
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).