Providers Alissa O'Neill, FNP-C to Elaine O'Neill, RN,BSN,IBCLC
300 individual NPIs in the federal registry, part 16,046 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. 121 link to a page of their own with Medicare and CMS data the registry does not carry.
| Provider | NPI | Specialty | Practice city | NPI issued |
|---|---|---|---|---|
| Alissa O'Neill, FNP-C | 1053982652 | Family Nurse Practitioner | Hutchinson, KS | 2021 |
| Allison O'Neill, PA-C | 1023854775 | Physician Assistant | High Point, NC | 2024 |
| Allison O'Neill | 1043479165 | Pediatric Hematology & Oncology Physician | Boston, MA | 2008 |
| Allison O'Neill, PT | 1306893318 | Physical Therapist | Norwich, NY | 2006 |
| Allison O'Neill | 1861110033 | Clinical Social Worker | Chicago, IL | 2022 |
| Allison O'Neill, PHARMD | 1912625781 | Pharmacist | Gainesville, FL | 2022 |
| Alyson O'Neill | 1518530674 | Behavior Technician | Raleigh, NC | 2021 |
| Alyssa O'Neill | 1699481135 | Registered Nurse | Gleed, WA | 2023 |
| Alyssa O'Neill, CRNA | 1700189776 | Certified Registered Nurse Anesthetist | Paoli, PA | 2010 |
| Alyssa O'Neill | 1841524865 | Mental Health Counselor | Las Vegas, NV | 2009 |
| Amanda O'Neill, BCBA | 1194611632 | Behavior Analyst | San Jose, CA | 2025 |
| Amanda O'Neill | 1497694442 | Behavior Technician | Wichita, KS | 2026 |
| Amanda O'Neill, APRN | 1851803837 | Nurse Practitioner | Bridgeport, CT | 2017 |
| Amanda O'Neill | 1972154979 | Addiction (Substance Use Disorder) Counselor | Arlington, WA | 2019 |
| Amanda O'Neill, CT | 1982388708 | Mental Health Counselor | Strongsville, OH | 2023 |
| Amaryllis O'Neill | 1053729848 | Social Worker | Philadelphia, PA | 2014 |
| Amelia O'Neill, PH.D. | 1649309253 | Health Service Psychologist | Morganton, NC | 2007 |
| Amy O'Neill, LCSW | 1124110028 | Clinical Social Worker | Aliso Viejo, CA | 2006 |
| Amy O'Neill, R.PH. | 1447469887 | Pharmacist | New Prague, MN | 2007 |
| Amy O'Neill, MD | 1649353798 | Psychiatry Physician | Lexington, KY | 2006 |
| Amy O'Neill, MS SLP-CCC | 1679754204 | Speech-Language Pathologist | Natick, MA | 2007 |
| Amy O'Neill, APRN, CRNP-PMH | 1831851021 | Psychiatric/Mental Health Nurse Practitioner | Nottingham, MD | 2021 |
| Amy O'Neill, MS, LPC | 1871150748 | Professional Counselor | Doylestown, PA | 2019 |
| Ana O'Neill, M.S. | 1740725266 | Speech-Language Pathologist | Waterbury, VT | 2016 |
| Andie O'Neill, RBT | 1518824820 | Behavior Technician | Summerville, SC | 2026 |
| Andrea O'Neill, M.A., LPC | 1003368788 | Professional Counselor | Williamsburg, VA | 2016 |
| Andrew O'Neill, D.C. | 1124492343 | Chiropractor | Park Ridge, NJ | 2015 |
| Andrew O'Neill, M.D. | 1194258350 | Surgery Physician | Delray Beach, FL | 2017 |
| Andrew O'Neill, DPT | 1265854285 | Physical Therapist | New York, NY | 2014 |
| Andrew O'Neill, LCSW | 1588911879 | Clinical Social Worker | Temecula, CA | 2012 |
| Andrew O'Neill | 1871215814 | Physician Assistant | Cherry Hill, NJ | 2022 |
| Angel O'Neill, BAI | 1396359311 | Behavior Analyst | Davie, FL | 2020 |
| Angel O'Neill | 1407010994 | Mental Health Counselor | Westminster, CA | 2008 |
| Angela O'Neill | 1467917328 | Case Manager/Care Coordinator | Cincinnati, OH | 2019 |
| Angela O'Neill, PT | 1730158361 | Orthopedic Physical Therapist | Burnsville, MN | 2006 |
| Angela O'Neill | 1770416455 | Social Worker | Tacoma, WA | 2026 |
| Angela O'Neill, LPN | 1841434503 | Licensed Practical Nurse | Reynoldsburg, OH | 2009 |
| Ann O'Neill, M.S. CCC/SLP | 1649642216 | Speech-Language Pathologist | Omaha, NE | 2015 |
| Ann O'Neill, RD, MD | 1659796381 | Internal Medicine Physician | Maywood, IL | 2014 |
| Ann O'Neill, LPC | 1891340626 | Professional Counselor | Troy, MI | 2019 |
| Ann Marie O'Neill, ARNP | 1871682856 | Nurse Practitioner | Kirkland, WA | 2006 |
| Anna O'Neill, MD | 1710197421 | Maternal & Fetal Medicine Physician | Camden, NJ | 2007 |
| Anne O'Neill, M.D. | 1114181484 | Surgery Physician | Las Vegas, NV | 2008 |
| Anne O'Neill, LPC - INTERN | 1356226443 | Professional Counselor | Westmont, IL | 2025 |
| Anne O'Neill | 1487971552 | Metabolic Nutrition Registered Dietitian | Albuquerque, NM | 2010 |
| Anne O'Neill, CNP, PMHNP-BC | 1497003214 | Psychiatric/Mental Health Nurse Practitioner | Akron, OH | 2012 |
| Anne Marie O'Neill, LCSW | 1821113259 | Clinical Social Worker | Larchmont, NY | 2007 |
| Annette O'Neill, RD | 1154668523 | Registered Dietitian | Flemington, NJ | 2013 |
| Annette O'Neill, MS, RDN, CDN | 1164040184 | Registered Dietitian | New York, NY | 2020 |
| Annette O'Neill, LCSW | 1942681820 | Clinical Social Worker | New Britain, CT | 2015 |
| Annie O'Neill | 1104590983 | Behavior Technician | Woodbury, MN | 2021 |
| Ansley O'Neill, MD | 1972130094 | Emergency Medicine Physician | Savannah, GA | 2020 |
| Anthony O'Neill, PT, RDN, LMT | 1578167904 | Physical Therapist | Cotati, CA | 2020 |
| Antoinette O'Neill | 1073019345 | Marriage & Family Therapist | Woodland, CA | 2018 |
| Antonina O'Neill | 1578221230 | Behavior Technician | Clearwater, FL | 2021 |
| April O'Neill | 1811395098 | Clinical Social Worker | Midvale, UT | 2014 |
| Archana O'Neill, MD | 1629059514 | Anesthesiology Physician | Boston, MA | 2005 |
| Aries O'Neill | 1568203461 | Specialist | San Francisco, CA | 2024 |
| Ashley O'Neill, AGACNP | 1104685452 | Acute Care Nurse Practitioner | Phoenix, AZ | 2024 |
| Ashley O'Neill | 1356883292 | Physician Assistant | West Islip, NY | 2016 |
| Ashley O'Neill, BCBA | 1447899687 | Behavior Analyst | Tinley Park, IL | 2020 |
| Ashley O'Neill, RD, LDN | 1528703816 | Registered Dietitian | Asheville, NC | 2022 |
| Ashley O'Neill, APRN | 1649786179 | Nurse Practitioner | Pensacola, FL | 2017 |
| Ashley O'Neill | 1699334078 | Behavior Technician | Dublin, OH | 2019 |
| Ashley O'Neill, PT, DPT, PES | 1700171782 | Physical Therapist | Washington, DC | 2011 |
| Ashli O'Neill, LMHC-D | 1164109476 | Mental Health Counselor | Batavia, NY | 2023 |
| Audra O'Neill, DPT | 1023436466 | Physical Therapist | San Diego, CA | 2014 |
| Audra O'Neill | 1235793860 | Physician Assistant | Boston, MA | 2019 |
| Audrey O'Neill, PA-C | 1194699298 | Physician Assistant | Lebanon, TN | 2025 |
| Audrey O'Neill | 1730536871 | Specialist | Fullerton, CA | 2016 |
| Audrey O'Neill, MS, PMHNP-BC, RN | 1972389922 | Psychiatric/Mental Health Nurse Practitioner | Hingham, MA | 2023 |
| Ava O'Neill, D.M.D | 1295255172 | Dentist | Milford, NH | 2017 |
| Avery O'Neill | 1720944275 | Behavior Technician | Frederick, MD | 2025 |
| Barbara O'Neill, NURSE PRACTITIONER | 1184241994 | Family Nurse Practitioner | Fredericksburg, VA | 2020 |
| Barbara O'Neill, P.T. | 1356559538 | Physical Therapist | Tijeras, NM | 2007 |
| Barbara O'Neill, OTR/L | 1902110042 | Occupational Therapist | Brooklyn, NY | 2010 |
| Bernadette O'Neill | 1790254472 | Registered Respiratory Therapist | Santa Clara, CA | 2018 |
| Bernard O'Neill, M.D. | 1659373975 | Neurology Physician | West Reading, PA | 2005 |
| Beth O'Neill, M.D. | 1962404962 | Pediatrics Physician | Spring, TX | 2005 |
| Bethany O'Neill, PSY.D. | 1871681981 | Psychologist | Bellevue, WA | 2006 |
| Beverly O'Neill, MD | 1891750626 | Pulmonary Disease Physician | Cleveland, OH | 2006 |
| Bianca O'Neill | 1750739322 | Physical Therapist | Nanuet, NY | 2016 |
| Blake O'Neill, PHARMD | 1255754420 | Pharmacist | Palm Springs, CA | 2014 |
| Blake O'Neill, DO | 1780432021 | Student in an Organized Health Care Education/Training Program | Philadelphia, PA | 2024 |
| Bonnie O'Neill | 1912194861 | Case Manager/Care Coordinator | Santa Barbara, CA | 2007 |
| Bonny O'Neill, MS, LPC | 1891377792 | Mental Health Counselor | Nashville, TN | 2021 |
| Brad O'Neill | 1386863041 | General Practice Dentistry | Parker, CO | 2007 |
| Bradley O'Neill | 1457184103 | Student in an Organized Health Care Education/Training Program | Syracuse, NY | 2024 |
| Braeden O'Neill, DO | 1164955209 | Anesthesiology Physician | West Bend, WI | 2017 |
| Brandon O'Neill, COTA | 1952286908 | Occupational Therapy Assistant | Shaker Heights, OH | 2025 |
| Brannan O'Neill, MD | 1770086597 | Neurological Surgery Physician | Portland, OR | 2018 |
| Brendan O'Neill, M.D. | 1013170695 | Dermatology Physician | Flagstaff, AZ | 2008 |
| Brendan O'Neill, DDS | 1679851133 | Dentist | Lima, OH | 2011 |
| Brendan O'Neill | 1831028547 | Student in an Organized Health Care Education/Training Program | Burlington, VT | 2026 |
| Brenden O'Neill | 1386522621 | Clinical Social Worker | Whiteville, NC | 2025 |
| Brenden O'Neill | 1609591551 | Physician Assistant | Spokane, WA | 2022 |
| Brenna O'Neill | 1013491703 | Behavior Technician | Novi, MI | 2018 |
| Brenna O'Neill, DPT | 1801502398 | Physical Therapist | Lakeland, FL | 2023 |
| Brennan O'Neill | 1215612585 | Mental Health Counselor | Pottstown, PA | 2023 |
| Brent O'Neill, MD | 1245473511 | Neurological Surgery Physician | Aurora, CO | 2009 |
| Brent O'Neill, LCSW | 1396456661 | Clinical Social Worker | Newark, DE | 2022 |
| Brian O'Neill, APRN | 1073872354 | Psychiatric/Mental Health Nurse Practitioner | Powell, WY | 2012 |
| Brian O'Neill, M.D. | 1194934539 | Cardiovascular Disease Physician | Detroit, MI | 2007 |
| Brian O'Neill, D.P.M. | 1215945647 | Foot & Ankle Surgery Podiatrist | Pomona, CA | 2006 |
| Brian O'Neill, D.C. | 1285700310 | Chiropractor | Ashland, OH | 2006 |
| Brian O'Neill, PTA | 1306034053 | Physical Therapy Assistant | Dallas, TX | 2007 |
| Brian O'Neill, M.D. | 1346214152 | Neurology Physician | Rochester, MN | 2006 |
| Brian O'Neill, M.D. | 1366425985 | Internal Medicine Physician | Martinez, CA | 2005 |
| Brian O'Neill, OPA-C | 1396719779 | Surgical Physician Assistant | San Diego, CA | 2006 |
| Brian O'Neill, LMT | 1457846669 | Massage Therapist | Beaverton, OR | 2018 |
| Brian O'Neill, D.C. | 1497006506 | Chiropractor | Bellevue, WA | 2012 |
| Brian O'Neill, PA-C | 1639600463 | Physician Assistant | Charlotte, NC | 2017 |
| Brian O'Neill, MD | 1700311677 | Emergency Medicine Physician | Indianapolis, IN | 2017 |
| Brian O'Neill, M.D. | 1700897162 | Orthopaedic Surgery Physician | Robbinsdale, MN | 2006 |
| Brian O'Neill | 1770168031 | Physician Assistant | Trabuco Canyon, CA | 2021 |
| Brian O'Neill, APRN, MSN, CCRN-CSC | 1821011396 | Adult Health Nurse Practitioner | New Haven, CT | 2006 |
| Brian O'Neill, DDS | 1841282027 | Oral and Maxillofacial Surgery (Dentist) | Bowling Green, OH | 2005 |
| Brian O'Neill, CRNA | 1891886966 | Certified Registered Nurse Anesthetist | Paducha, KY | 2006 |
| Briana O'Neill | 1245109750 | Physician Assistant | Boston, MA | 2025 |
| Briana O'Neill, CCC-SLP | 1942692934 | Speech-Language Pathologist | Winthrop, MA | 2015 |
| Brianna O'Neill | 1861096406 | Specialist | Hamburg, NY | 2020 |
| Bridget O'Neill, SLP | 1821541731 | Speech-Language Pathologist | Salem, NH | 2016 |
| Bridgette O'Neill, MD | 1750906806 | Internal Medicine Physician | Omaha, NE | 2020 |
| Brienne O'Neill | 1346871498 | Mental Health Counselor | Wampsville, NY | 2020 |
| Brighid O'Neill, SLP | 1093632812 | Speech-Language Pathologist | Lake Oswego, OR | 2026 |
| Brittany O'Neill | 1851863971 | Speech/Language/Hearing Specialist/Technologist | Baltimore, MD | 2018 |
| Brittany O'Neill, FNP-C | 1871017210 | Family Nurse Practitioner | Westlake, OH | 2017 |
| Brittney O'Neill, MSN, APRN, FNP-C | 1104467638 | Family Nurse Practitioner | Miami, FL | 2019 |
| Brittney O'Neill | 1528804069 | Student in an Organized Health Care Education/Training Program | Dallas, TX | 2024 |
| Brooke O'Neill, NP | 1710791975 | Adult Health Nurse Practitioner | New York, NY | 2025 |
| Brooke O'Neill, PA-C | 1851037006 | Obstetrics & Gynecology Physician | La Jolla, CA | 2022 |
| Bruce O'Neill, M.D. | 1427024744 | Nephrology Physician | Seattle, WA | 2006 |
| Bryan O'Neill, DPT | 1144518671 | Physical Therapist | Stamford, CT | 2011 |
| Bryan O'Neill, M.D. | 1528095783 | Specialist | North Wales, PA | 2006 |
| Cailey O'Neill, MD | 1952199721 | Student in an Organized Health Care Education/Training Program | Chapel Hill, NC | 2025 |
| Caitlin O'Neill | 1033561543 | Occupational Therapist | Philadelphia, PA | 2016 |
| Caitlin O'Neill, ATC, AT/L | 1124406731 | Athletic Trainer | Seattle, WA | 2015 |
| Caitlin O'Neill | 1245119650 | Community Health Worker | Las Cruces, NM | 2025 |
| Caitlin O'Neill | 1497174262 | Hematology (Internal Medicine) Physician | Los Angeles, CA | 2014 |
| Caitlin O'Neill, RN, IBCLC | 1831673276 | Lactation Consultant (Registered Nurse) | Sebastopol, CA | 2018 |
| Caitlin O'Neill, LLPC | 1972145910 | Mental Health Counselor | Waterford, MI | 2019 |
| Caitlin O'Neill | 1992396519 | Registered Dietitian | Chester, NJ | 2021 |
| Candace O'Neill, RD | 1174067805 | Registered Dietitian | Weston, FL | 2016 |
| Cara O'Neill, MS, RD, LD | 1588986012 | Registered Dietitian | Winchester, KY | 2010 |
| Carey O'Neill, PSY.D | 1629184494 | Clinical Psychologist | Cheshire, CT | 2006 |
| Carina O'Neill, D.O. | 1295886109 | Physical Medicine & Rehabilitation Physician | Braintree, MA | 2007 |
| Caroline O'Neill, LPC-A | 1528887973 | Mental Health Counselor | Mount Pleasant, SC | 2024 |
| Caroline O'Neill, LMT | 1609657501 | Massage Therapist | Leesburg, VA | 2023 |
| Carolyn O'Neill, DO | 1972252484 | Emergency Medicine Physician | Chicago, IL | 2022 |
| Carrie O'Neill, D.P.M. | 1750420899 | Podiatrist | Clifton Springs, NY | 2007 |
| Carson O'Neill | 1144683715 | Athletic Trainer | Newton, NJ | 2016 |
| Casey O'Neill, LLMSW | 1508539701 | Social Worker | Ann Arbor, MI | 2021 |
| Casey O'Neill, D.D.S, M.S. | 1912236142 | Orthodontics and Dentofacial Orthopedics Dentistry | Sunriver, OR | 2009 |
| Cassidy O'Neill, MD | 1316735996 | Student in an Organized Health Care Education/Training Program | Brockton, MA | 2025 |
| Cassidy O'Neill | 1902611973 | Adult Companion | Grand Island, NE | 2025 |
| Cassie O'Neill | 1417335449 | Day Training/Habilitation Specialist | Benton, AR | 2015 |
| Catherin O'Neill | 1962900324 | Addiction (Substance Use Disorder) Counselor | Daytona Beach, FL | 2018 |
| Catherine O'Neill, PT | 1023824182 | Physical Therapist | Mt Pleasant, WI | 2024 |
| Catherine O'Neill, PT, DPT | 1124481247 | Physical Therapist | Salisbury, NC | 2016 |
| Catherine O'Neill, PTA | 1235858135 | Physical Therapy Assistant | Parlin, NJ | 2022 |
| Catherine O'Neill, PA-C | 1407455116 | Physician Assistant | Concord, CA | 2020 |
| Catherine O'Neill, NP-C | 1760801369 | Family Nurse Practitioner | Tempe, AZ | 2014 |
| Catherine O'Neill, RN | 1831495001 | Registered Nurse | New York, NY | 2011 |
| Catherine O'Neill, MD | 1992745194 | Internal Medicine Physician | Buffalo, NY | 2006 |
| Cathleen O'Neill, MSW, LCSW | 1922026087 | Clinical Social Worker | Pueblo, CO | 2006 |
| Cathryn O'Neill, M.D. | 1093071763 | Family Medicine Physician | Redlands, CA | 2012 |
| Celeste O'Neill, KT, CWK | 1124359849 | Kinesiotherapist | Albuquerque, NM | 2010 |
| Celeste O'Neill | 1457194672 | Family Nurse Practitioner | Santa Monica, CA | 2024 |
| Charles O'Neill, M.D. | 1437136561 | Obstetrics & Gynecology Physician | Pittsfield, MA | 2005 |
| Charles O'Neill, BA | 1467584474 | Mental Health Counselor | Thornton, CO | 2007 |
| Charles O'Neill, DC | 1568505626 | Chiropractor | Grayson, KY | 2007 |
| Chelsea O'Neill, ACSW | 1295566743 | Clinical Social Worker | Los Angeles, CA | 2024 |
| Chelsea O'Neill, FNP | 1366078230 | Family Nurse Practitioner | Royal Oak, MI | 2020 |
| Chelsea O'Neill, DPT | 1366819450 | Physical Therapist | Boiling Springs, SC | 2015 |
| Chelsey O'Neill | 1487978904 | Family Nurse Practitioner | Spokane, WA | 2010 |
| Chesney O'Neill | 1336741651 | Clinical Social Worker | Framingham, MA | 2020 |
| Christa O'Neill | 1619284684 | Speech-Language Pathologist | Newburgh, NY | 2010 |
| Christie O'Neill | 1124525803 | Behavior Technician | Emeryville, CA | 2018 |
| Christina O'Neill | 1467046391 | Physical Therapist | Flemington, NJ | 2021 |
| Christine O'Neill, P.A. | 1073546313 | Surgical Physician Assistant | Burlington, VT | 2006 |
| Christine O'Neill, M.S. | 1164541827 | Mental Health Counselor | Boulder, CO | 2007 |
| Christine O'Neill | 1164832267 | Registered Nurse | Columbia, MD | 2014 |
| Christine O'Neill, LCSW | 1366035669 | Social Worker | Staten Island, NY | 2021 |
| Christopher O'Neill, MD | 1063406759 | Anesthesiology Physician | Tucson, AZ | 2005 |
| Christopher O'Neill, PHARMD | 1356657209 | Pharmacist | Philadelphia, PA | 2010 |
| Christopher O'Neill, P.A.-C., MSHS | 1518240688 | Physician Assistant | New York, NY | 2011 |
| Christopher O'Neill, DO | 1710324504 | Emergency Medicine Physician | Bloomington, MN | 2013 |
| Christopher O'Neill, M.D. | 1831419597 | Diagnostic Radiology Physician | Richmond, VA | 2010 |
| Christopher O'Neill, LCSW | 1841746344 | Clinical Social Worker | Colorado Springs, CO | 2016 |
| Christopher O'Neill, CRNA | 1851563043 | Certified Registered Nurse Anesthetist | Elmer, NJ | 2008 |
| Cian O'Neill, D.C., B.A. | 1760738983 | Chiropractor | Hiawatha, IA | 2012 |
| Cierra O'Neill, PA-C | 1679257364 | Medical Physician Assistant | Baltimore, MD | 2023 |
| Claire O'Neill, DC | 1598841553 | Chiropractor | Los Angeles, CA | 2006 |
| Claudia O'Neill | 1124781075 | Mental Health Counselor | Englewood, NJ | 2021 |
| Clayton O'Neill | 1609651769 | Peer Specialist | Findlay, OH | 2023 |
| Colin O'Neill, L.M.P. | 1093090870 | Massage Therapist | Seattle, WA | 2011 |
| Colin O'Neill, LCSW | 1184309494 | Clinical Social Worker | Philadelphia, PA | 2023 |
| Colin O'Neill, MD | 1427995869 | Orthopaedic Surgery Physician | Austin, TX | 2026 |
| Colin O'Neill, MSW | 1780028191 | Clinical Social Worker | Portland, ME | 2013 |
| Colin O'Neill, MD | 1952833642 | Emergency Medicine Physician | Charlotte, NC | 2017 |
| Colleen O'Neill, MD | 1013585728 | Internal Medicine Physician | Houston, TX | 2021 |
| Colleen O'Neill, LAC, MAC | 1326075995 | Acupuncturist | Depew, NY | 2006 |
| Colleen O'Neill, M.A.CCC-SLP | 1356568281 | Speech-Language Pathologist | Grayslake, IL | 2007 |
| Colleen O'Neill | 1538098926 | Counselor | Rochester Hills, MI | 2026 |
| Colleen O'Neill, MD | 1558058537 | Student in an Organized Health Care Education/Training Program | Pittsburgh, PA | 2023 |
| Colleen O'Neill | 1760849814 | Speech-Language Pathologist | Hastings, NE | 2016 |
| Colleen O'Neill, OTR/L | 1811442676 | Occupational Therapist | Brooklyn, NY | 2016 |
| Colleen O'Neill, MS OTR/L | 1912368721 | Occupational Therapist | Severn, MD | 2016 |
| Colleen O'Neill, CRNA | 1972883924 | Certified Registered Nurse Anesthetist | Poughkeepsie, NY | 2011 |
| Collin O'Neill, RPH | 1538792270 | Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist | Brookline, MA | 2020 |
| Connie O'Neill, RN | 1134334964 | Child & Adolescent Psychiatric/Mental Health Registered Nurse | Akron, OH | 2007 |
| Connie O'Neill, OT | 1871784231 | Occupational Therapist | Greenville, SC | 2007 |
| Connor O'Neill, DO | 1548963770 | Internal Medicine Physician | Spokane, WA | 2023 |
| Connor O'Neill, DO | 1952005514 | Hospitalist Physician | Milwaukee, WI | 2023 |
| Conor O'Neill, MD | 1053686196 | Surgery Physician | Burlington, VT | 2012 |
| Conor O'Neill, M.D. | 1326177171 | Interventional Pain Medicine Physician | San Francisco, CA | 2007 |
| Conor O'Neill, MD | 1407347024 | Orthopaedic Surgery Physician | Cary, NC | 2018 |
| Conor O'Neill | 1982231171 | Internal Medicine Physician | Louisville, KY | 2020 |
| Corey O'Neill, D.C | 1023445327 | Chiropractor | Medford, OR | 2013 |
| Cori O'Neill | 1861809923 | Adult Health Nurse Practitioner | New Bedford, MA | 2014 |
| Corie O'Neill | 1891616041 | Behavior Technician | Monrovia, CA | 2026 |
| Corrine O'Neill | 1316243009 | Social Worker | Anchorage, AK | 2011 |
| Corrinne O'Neill | 1093964488 | Occupational Therapist | Chesapeake, VA | 2008 |
| Courtney O'Neill, CRNP | 1932768199 | Gerontology Nurse Practitioner | Westminster, MD | 2019 |
| Craig O'Neill, M.D. | 1720241037 | Orthopaedic Surgery Physician | West Reading, PA | 2008 |
| Crystal O'Neill, FNP | 1174155303 | Family Nurse Practitioner | Norfolk, VA | 2020 |
| Cynthia O'Neill, STNA | 1720349855 | Nurse's Aide | Loveland, OH | 2012 |
| Dale O'Neill, PT, MS | 1124870258 | Physical Therapist | Medway, MA | 2024 |
| Damon O'Neill | 1093652224 | Critical Care Medicine Registered Nurse | Oklahoma City, OK | 2026 |
| Dana O'Neill, D.O. | 1023305216 | Family Medicine Physician | Ann Arbor, MI | 2011 |
| Dana O'Neill, LMHC, LPC | 1316448921 | Mental Health Counselor | St Petersburg, FL | 2018 |
| Daniel O'Neill, MD | 1093897092 | Gastroenterology Physician | Renton, WA | 2006 |
| Daniel O'Neill | 1154209161 | Mental Health Counselor | New York, NY | 2025 |
| Daniel O'Neill, PLMHP | 1205144565 | Mental Health Counselor | Papillion, NE | 2010 |
| Daniel O'Neill, M.D. | 1265775837 | Pediatric Anesthesiology Physician | New York, NY | 2013 |
| Daniel O'Neill, MD | 1477546604 | Anesthesiology Physician | New York, NY | 2005 |
| Daniel O'Neill, PHARMD | 1548860547 | Pharmacist | Madison, OH | 2020 |
| Daniel O'Neill, MD | 1588007926 | Internal Medicine Physician | San Francisco, CA | 2013 |
| Daniel O'Neill, LCSW | 1669748109 | Clinical Social Worker | New York, NY | 2012 |
| Daniel O'Neill | 1699358523 | Student in an Organized Health Care Education/Training Program | Gainesville, FL | 2021 |
| Daniel O'Neill, PSY.D. | 1710149422 | Clinical Psychologist | Lancaster, PA | 2008 |
| Daniel O'Neill, PTA | 1770147498 | Physical Therapy Assistant | Battle Creek, MI | 2019 |
| Daniel O'Neill, P.C. | 1770845745 | Professional Counselor | Youngstown, OH | 2012 |
| Daniel O'Neill, M.D. | 1831282631 | Orthopaedic Surgery Physician | Houston, TX | 2006 |
| Daniel O'Neill, DNP, ACNPC-AG, FNP-C | 1891463964 | Family Nurse Practitioner | Mexia, TX | 2021 |
| Daniel O'Neill, M.D. | 1972578508 | Internal Medicine Physician | Putnam, CT | 2006 |
| Daniela O'Neill, DMD | 1790953487 | General Practice Dentistry | Salem, NH | 2008 |
| Danielle O'Neill, M.S., C.A.S. | 1740792225 | School Psychologist | Fairport, NY | 2017 |
| Danielle O'Neill, NP | 1801614615 | Nurse Practitioner | Stanford, CA | 2024 |
| Daphne O'Neill | 1790663755 | Behavior Technician | Brandon, FL | 2025 |
| Darren O'Neill, M.D. | 1861434607 | Internal Medicine Physician | Enfield, CT | 2006 |
| Darren O'Neill, M.D. | 1982781373 | Diagnostic Radiology Physician | Milwaukee, WI | 2006 |
| David O'Neill, MD | 1215433305 | Orthopaedic Surgery Physician | Stockbridge, GA | 2018 |
| David O'Neill, DO | 1215943337 | Internal Medicine Physician | Lehighton, PA | 2006 |
| David O'Neill, M.D. | 1386874923 | Blood Banking & Transfusion Medicine Physician | New York, NY | 2009 |
| David O'Neill, CRNP | 1396276044 | Family Nurse Practitioner | Horsham, PA | 2017 |
| Dawn O'Neill | 1487323135 | Case Manager/Care Coordinator | Port Angeles, WA | 2021 |
| Dawn O'Neill, RD | 1801179692 | Registered Dietitian | Toledo, OH | 2011 |
| Deborah O'Neill, RN | 1144478488 | Home Health Registered Nurse | Brentwood, NY | 2008 |
| Deborah O'Neill, N.P. | 1295872471 | Nurse Practitioner | Denver, CO | 2007 |
| Deborah O'Neill, LCSW | 1659530012 | Clinical Social Worker | Wynnewood, PA | 2008 |
| Deborah O'Neill | 1831583160 | Specialist | Mount Kisco, NY | 2015 |
| Debra O'Neill, LICDC | 1669898508 | Addiction (Substance Use Disorder) Counselor | Dayton, OH | 2014 |
| Deidre O'Neill, MSW | 1295113181 | Social Worker | Oakland, CA | 2015 |
| Deirdre O'Neill, LPC, LMHC, BCN | 1083969646 | Mental Health Counselor | Honolulu, HI | 2012 |
| Denise O'Neill, LCSW | 1114171287 | Clinical Social Worker | North Charleston, SC | 2008 |
| Dennis O'Neill, M.D. | 1083679021 | Anatomic Pathology & Clinical Pathology Physician | Manchester, CT | 2006 |
| Dennis O'Neill, MD | 1639160716 | Internal Medicine Physician | Newport News, VA | 2005 |
| Derek O'Neill | 1780288746 | Pharmacist | Philadelphia, PA | 2020 |
| Destiny O'Neill, PA-C | 1225393218 | Surgical Physician Assistant | Clearwater, FL | 2012 |
| Devin O'Neill, RN | 1184490765 | Case Management Registered Nurse | Chicago, IL | 2023 |
| Devon O'Neill, PSY.D. | 1104026954 | Psychologist | Del Mar, CA | 2007 |
| Diana O'Neill, R.PH. | 1174838940 | Pharmacist | San Antonio, TX | 2010 |
| Diana O'Neill, NP | 1184975849 | Family Nurse Practitioner | San Francisco, CA | 2012 |
| Diana O'Neill, PROFESSIONAL COUNSEL | 1295062115 | Professional Counselor | Cherry Hill, NJ | 2009 |
| Diane O'Neill, PT | 1891706420 | Physical Therapist | Moline, IL | 2006 |
| Diane O'Neill | 1952432908 | Clinical Social Worker | East Greenwich, RI | 2007 |
| Dianna O'Neill | 1891173548 | Nurse Practitioner | West Des Moines, IA | 2015 |
| Diarmuid O'Neill, MD | 1750460424 | Anesthesiology Physician | Marshfield, WI | 2006 |
| Dillon O'Neill, MD | 1902302607 | Orthopaedic Surgery Physician | Jackson, MS | 2018 |
| Donald O'Neill | 1255965455 | Physical Therapist | Georgetown, KY | 2020 |
| Donna O'Neill, MD | 1174534994 | Infectious Disease Physician | Jackson, MI | 2006 |
| Donnon O'Neill, D.D.S. | 1316161391 | General Practice Dentistry | Saranac Lake, NY | 2007 |
| Dorothy O'Neill | 1487332243 | Mental Health Counselor | Anchorage, AK | 2023 |
| Dorothy O'Neill, LMFT | 1639627086 | Marriage & Family Therapist | Anaheim, CA | 2016 |
| Dylan O'Neill, AA | 1194525014 | Anesthesiologist Assistant | Columbus, OH | 2025 |
| Dylan O'Neill | 1356199012 | Student in an Organized Health Care Education/Training Program | Millersville, PA | 2024 |
| Eavan O'Neill | 1952221319 | Behavior Technician | Santa Ana, CA | 2026 |
| Edgar O'Neill, D.D.S. | 1235195413 | Prosthodontics | Gainesville, FL | 2006 |
| Edmond O'Neill, M.D. | 1952355273 | Surgery Physician | Dubuque, IA | 2006 |
| Edna O'Neill, D.P.T. | 1871893024 | Physical Therapist | Rochester, NY | 2010 |
| Edward O'Neill | 1164781308 | Social Worker | Grand Rapids, MI | 2012 |
| Edward O'Neill, DC | 1376536896 | Chiropractor | Bonita Springs, FL | 2005 |
| Edward O'Neill, M.D. | 1467477422 | Family Medicine Physician | West Hills, CA | 2006 |
| Edward O'Neill, M.D. | 1629236203 | Neonatal-Perinatal Medicine Physician | Louisville, KY | 2008 |
| Edward O'Neill, M.D. | 1679713879 | Anatomic Pathology & Clinical Pathology Physician | Tampa, FL | 2009 |
| Eileen O'Neill | 1245618875 | Behavior Analyst | Livingston, NJ | 2015 |
| Eileen O'Neill, CRNA | 1922157841 | Certified Registered Nurse Anesthetist | Walnut Creek, CA | 2007 |
| Eilene O'Neill, NP-C | 1689128324 | Family Nurse Practitioner | Winchester, VA | 2016 |
| Elaine O'Neill, RN,BSN,IBCLC | 1831557073 | Lactation Consultant (Registered Nurse) | Sunnyvale, CA | 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).