NPPES file of Aug 9, 2026

Providers Loreen O'Brien, MA, MED, MDIV, CRC to Michael O'Brien, DPT

300 individual NPIs in the federal registry, part 16,007 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. 99 link to a page of their own with Medicare and CMS data the registry does not carry.

CMS NPPES registry, monthly file · specialties as NUCC taxonomy codes · method

ProviderNPISpecialtyPractice cityNPI issued
Loreen O'Brien, MA, MED, MDIV, CRC1407213424Mental Health CounselorWesley Chapel, FL2016
Loretta O'Brien1316542020Peer SpecialistKennett, MO2020
Loretta O'Brien, D.C.1801828488ChiropractorPacifica, CA2006
Loretta O'Brien1962049692Occupational TherapistBrooklyn, NY2019
Lori O'Brien, M.A.CCC-SLP1346404910Speech-Language PathologistPlymouth Meeting, PA2008
Lori O'Brien1588392971Mental Health CounselorToms River, NJ2022
Lori O'Brien, M.ED/BCBA1770095457Behavior AnalystFort Lauderdale, FL2017
Lori O'Brien, OTR/L1962915249Occupational TherapistNew City, NY2017
Lorna O'Brien, RN1013123843Home Health Registered NurseRochester, NY2007
Lorrie O'Brien, MSW, LCSW, LICSW1659686780Clinical Social WorkerEnfield, CT2010
Lucy O'Brien, D.O.1487911814Family Medicine PhysicianBroadview Heights, OH2012
Luke O'Brien1366062861Social WorkerWillimantic, CT2020
Luke O'Brien, PT1508145293Physical TherapistVail, CO2011
Lynae O'Brien1740698059Behavior AnalystBoynton Beach, FL2014
Lynette O'Brien, OTRL1245436062Occupational TherapistNashville, TN2007
Lynn O'Brien, EDD,LPCC-S,NCC,RPT1205694825Mental Health CounselorLe Sueur, MN2024
Lynn O'Brien, MSW1225127608Marriage & Family TherapistBrookfield, WI2006
Lynn O'Brien, MT-BC1467743393Music TherapistMinneapolis, MN2011
Lynn O'Brien, ACSW, LCSW1770547226Clinical Social WorkerForest Hills, NY2006
Lynn O'Brien1861185969Speech-Language PathologistSalt Lake City, UT2023
Lynne O'Brien, M.ED., BCBA1184001406Behavior AnalystMercer Island, WA2015
Lynne O'Brien1720107279Marriage & Family TherapistLong Beach, CA2007
Lynne O'Brien, CRNA1821004920Certified Registered Nurse AnesthetistCincinnati, OH2006
M. O'Brien, MD1992750863Anatomic Pathology & Clinical Pathology PhysicianMobile, AL2006
M. Anne O'Brien, M.ED, LPC, LMFT, NCC1336361906Marriage & Family TherapistLuling, LA2007
M. Keith O'Brien1659772630Student in an Organized Health Care Education/Training ProgramNew Bedford, MA2014
Macie O'Brien1932033438Behavior TechnicianKnoxville, TN2026
Macklin O'Brien, PHARMD1205364510Pharmacotherapy PharmacistIowa City, IA2017
Madeleine O'Brien1639647480Behavior TechnicianSacramento, CA2018
Madeleine O'Brien1669674255Psychiatry PhysicianMarcy, NY2007
Madeline O'Brien1962032771Behavior TechnicianSan Diego, CA2020
Madelyn O'Brien1871348243CounselorLawrence, MA2024
Madison O'Brien, MD1124762505Obstetrics & Gynecology PhysicianLittle Rock, AR2022
Madison O'Brien, SLP1265002943Speech-Language PathologistPortland, OR2021
Madison O'Brien, RBT1437079969Behavior TechnicianClinton, MO2026
Madison O'Brien1851973267Physician AssistantCanton, GA2021
Madison O'Brien, RMHCI1992668487Mental Health CounselorLake Mary, FL2025
Maegan O'Brien, MS CCC-SLP1780217083Speech-Language PathologistPoplar Grove, IL2020
Maeve O'Brien1326927435Registered NurseNashville, TN2025
Mai O'Brien1134958291Licensed Practical NurseBrooklyn, NY2024
Maia O'Brien, PT1972717932Physical TherapistOlympia, WA2007
Malia O'Brien1366905671CounselorGrass Valley, CA2019
Mallorie O'Brien1851998090Physical TherapistWheat Ridge, CO2020
Mallory O'Brien1033719596Registered NurseClinton, TN2020
Mallory O'Brien1487261186Mental Health CounselorBellingham, WA2020
Mallory O'Brien, FNP-C1639311178Family Nurse PractitionerDouglas, GA2009
Mallory O'Brien, PA-C1700647948Physician AssistantLansing, MI2024
Marcela O'Brien, MA1821278359Student in an Organized Health Care Education/Training ProgramPortland, OR2007
Marcia O'Brien, MSN, APRN, NP-C1053853176Family Nurse PractitionerAustin, TX2016
Marcus O'Brien, M.D.1215944772Pediatrics PhysicianLittle Rock, AR2006
Marcy O'Brien, M.A. CCC-A, F-AAA1659551315AudiologistLakeland, FL2007
Margaret O'Brien, MD1023048964Anesthesiology PhysicianBryn Mawr, PA2006
Margaret O'Brien1023987377Behavior TechnicianWinchester, VA2025
Margaret O'Brien, LC1033320635Mental Health CounselorLanham, MD2007
Margaret O'Brien, RN1134267339Child & Adolescent Psychiatric/Mental Health Registered NurseSan Francisco, CA2007
Margaret O'Brien1134700495Psychiatry PhysicianChicago, IL2021
Margaret O'Brien, MA, JD1205972387Mental Health CounselorTewksbury, MA2007
Margaret O'Brien, PT1285703314Physical TherapistHilton Head, SC2006
Margaret O'Brien, GNP1437128642Gerontology Nurse PractitionerEdina, MN2006
Margaret O'Brien, LCAT, LMHC, BC-DMT1548817281Mental Health CounselorNew York, NY2019
Margaret O'Brien, MD1639871080Dermatology PhysicianPhiladelphia, PA2023
Margaret O'Brien, R.D.1659331536Registered DietitianPhoenix, AZ2006
Margaret O'Brien, PT1669589354Physical TherapistPlymouth, MN2006
Margaret O'Brien1811542608SpecialistVictor, NY2019
Margaret O'Brien1821309741Mental Health CounselorDorchester, MA2010
Margaret O'Brien, LMHC1891246518Mental Health CounselorArlington, MA2016
Margaret O'Brien1912505033Speech-Language PathologistManteno, IL2020
Margaret O'Brien1942275532Orthopedic Physical TherapistNas Whidbey, WA2006
Margaret O'Brien, MPT LPT1942428891Physical TherapistWoody Creek, CO2007
Mari O'Brien, RN1154156297Registered NurseBoerne, TX2024
Maria O'Brien, OTD, OTR/L1114809878Occupational TherapistChicago, IL2025
Maria O'Brien, M.S.1124170667Professional CounselorWaukesha, WI2007
Maria O'Brien, M.D.1366429011Family Medicine PhysicianLeonardtown, MD2005
Maria O'Brien, PTA1487026464Physical Therapy AssistantReading, PA2015
Maria O'Brien1952053639Registered NurseWarren, OH2022
Maria O'Brien, LPC1982749602Professional CounselorShreveport, LA2007
Maria O'Brien, MD1992718068Family Medicine PhysicianBristol, CT2006
Mariah O'Brien, MSW, LCSW1730602095Clinical Social WorkerBrookline, MA2017
Marian 'Micki' O'Brien, M.ED.,, L.P.C.1770664252Professional CounselorAustin, TX2006
Marianne O'Brien, MA SLP1083071633Speech-Language PathologistTorrance, CA2016
Marie O'Brien, ANP1073860607Adult Health Nurse PractitionerPort Jefferson, NY2012
Marie O'Brien, D.O.1083836464Rheumatology PhysicianAllentown, PA2007
Marie O'Brien, MA, LPCC1760780415Professional CounselorMinneapolis, MN2011
Mariellen O'Brien1578697637Social WorkerAuburn, CA2007
Marilyn O'Brien, RN1679657597Registered NurseDecatur, GA2006
Marina O'Brien, PA-C1932923489Physician AssistantMilwaukee, WI2024
Marine O'Brien, LPN1336345016Licensed Practical NurseBurlington, NJ2007
Marionne Joy O'Brien1417831744Addiction (Substance Use Disorder) CounselorAnchorage, AK2025
Marisa O'Brien, OD1124332234OptometristSaint Louis, MO2010
Marisa O'Brien, RN1457739724Registered NurseSalem, NH2015
Mark O'Brien, MD1124129267Family Medicine PhysicianCarmel, IN2006
Mark O'Brien1124796545Certified Registered Nurse AnesthetistPlymouth, MN2021
Mark O'Brien1174243976Certified Registered Nurse AnesthetistLewiston, ME2022
Mark O'Brien, D.O.1255322509Family Medicine PhysicianSaint Clair, MI2005
Mark O'Brien, D.O.1265532212Pediatrics PhysicianFort Wayne, IN2006
Mark O'Brien1295421758Student in an Organized Health Care Education/Training ProgramNew York, NY2023
Mark O'Brien, D.O.1497744247Internal Medicine PhysicianVista, CA2005
Mark O'Brien, LCSW-R1598072357Clinical Social WorkerAlbion, NY2010
Mark O'Brien, DC1770180895ChiropractorEl Dorado Hills, CA2020
Mark O'Brien, MS, LCPC1932427986Professional CounselorChicago, IL2010
Mark O'Brien, M.D. , M.P.H.1972726495Developmental - Behavioral Pediatrics PhysicianCranston, RI2007
Marlene O'Brien, MD, PHD1467750422Family Medicine PhysicianTurnersville, NJ2011
Martha O'Brien, CRNA1356437081Certified Registered Nurse AnesthetistBoston, MA2006
Martha O'Brien, MS SLP/CCC1669465456Speech-Language PathologistFarmville, VA2005
Martha O'Brien, APRN1770566689Adult Health Nurse PractitionerWethersfield, CT2005
Mary O'Brien, MD1013902162Family Medicine PhysicianFort Wayne, IN2005
Mary O'Brien, DPT1053230201Physical TherapistKansas City, MO2026
Mary O'Brien, OTR1053435354Occupational TherapistKennett Square, PA2007
Mary O'Brien, MD1083118863Obstetrics & Gynecology PhysicianLouisville, KY2018
Mary O'Brien, CNM1124177332Advanced Practice MidwifeHermosa Beach, CA2007
Mary O'Brien1134700750Behavior AnalystHaddon Heights, NJ2021
Mary O'Brien1174372130Mental Health CounselorPittsburgh, PA2024
Mary O'Brien, LMSW1184199010School Social WorkerCambria Heights, NY2018
Mary O'Brien, L.P.C.1194874909Professional CounselorSaint Louis, MO2007
Mary O'Brien1275839433Mental Health CounselorLexington, MA2011
Mary O'Brien, NMD, FNP1285750240Family Nurse PractitionerTempe, AZ2007
Mary O'Brien, PT1285794230Physical TherapistColchester, VT2006
Mary O'Brien, RN1295004125Registered NurseSchenectady, NY2011
Mary O'Brien, PHD1306850490PsychologistLos Angeles, CA2006
Mary O'Brien, RN-C, FNP, MS1336276864Family Nurse PractitionerAllendale, MI2007
Mary O'Brien, SLP-A1346410586Developmental TherapistValrico, FL2008
Mary O'Brien1386906154Physical TherapistAmesbury, MA2012
Mary O'Brien, LMHC1417358938Mental Health CounselorYakima, WA2014
Mary O'Brien, PHARMD1417739970PharmacistNottingham, MD2023
Mary O'Brien1477938900Certified Registered Nurse AnesthetistCincinnati, OH2015
Mary O'Brien1568316065Behavior TechnicianLas Vegas, NV2026
Mary O'Brien1578262606Behavior TechnicianMontclair, CA2023
Mary O'Brien, CRNP1578554887Primary Care Nurse PractitionerLaurel, MD2005
Mary O'Brien, LCPC1588834493Professional CounselorEdgewater, MD2008
Mary O'Brien, LCSW1598544371Clinical Social WorkerPeekskill, NY2023
Mary O'Brien, RRT, NPS, AE-C1629393905Neonatal/Pediatric Registered Respiratory TherapistPiscataway, NJ2010
Mary O'Brien, PSYD1649133711Clinical NeuropsychologistLake Grove, NY2025
Mary O'Brien, M.D.1659513570Pediatrics PhysicianHouston, TX2009
Mary O'Brien, RN1679826069School Registered NurseNashville, TN2012
Mary O'Brien, RN1720826936Addiction (Substance Use Disorder) Registered NurseOak Harbor, WA2024
Mary O'Brien, OTR/L1750680401Occupational TherapistTinley Park, IL2011
Mary O'Brien, FNP1821176264Nurse PractitionerVestal, NY2006
Mary O'Brien, MD1891635819Student in an Organized Health Care Education/Training ProgramTampa, FL2026
Mary O'Brien, M.D.1912980434Internal Medicine PhysicianShrewsbury, MA2005
Mary O'Brien, MD1952317927Family Medicine PhysicianTacoma, WA2006
Mary O'Brien, LCSW, CASAC1962848820Clinical Social WorkerNew York, NY2013
Mary Clare O'Brien, MSP1689075913Mental Health CounselorFall River, MA2014
Mary Ellen O'Brien, M.D.1144425000Internal Medicine PhysicianProvidence, RI2007
Mary Jane O'Brien, RNP1831138320Pediatric Nurse PractitionerEast Boston, MA2006
Mary Lou O'Brien, FNP1427500909Family Nurse PractitionerSpringboro, OH2016
Mary Lynn O'Brien, M.D.1124115936Developmental - Behavioral Pediatrics PhysicianPortland, OR2006
Maryanne O'Brien, NP1851185789Women's Health Nurse PractitionerIndianapolis, IN2025
Maryellen O'Brien, LMHC1902284458Mental Health CounselorWorcester, MA2015
Marykate O'Brien, PA-C1396300430Physician AssistantGreensboro, NC2019
Masumi O'Brien, PTA1295857548Physical Therapy AssistantPlymouth Meeting, PA2007
Matthew O'Brien1083156525Athletic TrainerCamp Hill, PA2016
Matthew O'Brien, MD1376002600Psychiatry PhysicianAtascadero, CA2019
Matthew O'Brien1376160135Personal Care AttendantWashington, DC2020
Matthew O'Brien1376160267TechnicianSun Valley, CA2020
Matthew O'Brien, M.D.1417210998Diagnostic Radiology PhysicianPortland, OR2012
Matthew O'Brien, DO1417577024Surgery PhysicianJanesville, WI2020
Matthew O'Brien, M.D.1417996935Family Medicine PhysicianWilmington, DE2006
Matthew O'Brien, PA-C1518725779Physician AssistantPalo Alto, CA2024
Matthew O'Brien1538023007Behavior TechnicianConcord, CA2025
Matthew O'Brien, PT, DPT1588278949Physical TherapistWestbrook, ME2020
Matthew O'Brien, MD1790304137Pediatric Cardiology PhysicianNew Haven, CT2020
Matthew O'Brien, PT, DPT1831039247Physical TherapistTucson, AZ2026
Matthew O'Brien1871345256Student in an Organized Health Care Education/Training ProgramCharlotte, NC2024
Matthew O'Brien, PH.D.1871805838PsychologistIowa City, IA2010
Matthew O'Brien, DC1932718160Independent Medical Examiner ChiropractorMorgan Hill, CA2020
Matthew O'Brien, PHD, ATC, LAT1942295316Athletic TrainerStillwater, OK2005
Matthew O'Brien, PA-C1972847168Surgical Physician AssistantPittsburgh, PA2012
Maura O'Brien, PHARM. D1043781826PharmacistReno, NV2018
Maura O'Brien1306450283Occupational Therapy AssistantFindlay, OH2020
Maura O'Brien, DNP, FNP-C1831960335Family Nurse PractitionerWashington, DC2024
Maureen O'Brien1013327626Occupational TherapistJacksonville, FL2014
Maureen O'Brien, LCSW1124442645Clinical Social WorkerWaynesville, NC2014
Maureen O'Brien, MS, CCC-SLP1205006970Speech-Language PathologistPittsburgh, PA2008
Maureen O'Brien1316585235Occupational TherapistIndianapolis, IN2019
Maureen O'Brien, MSW, LCSW, ACSW1326097817Clinical Social WorkerAlbany, NY2006
Maureen O'Brien, LCPC1366009086Professional CounselorBaltimore, MD2019
Maureen O'Brien, PHARMD1366291528PharmacistVentura, CA2024
Maureen O'Brien, M.D.1386891778Family Medicine PhysicianJacksonville, FL2008
Maureen O'Brien, RN1467490573Home Health Registered NurseRacine, WI2006
Maureen O'Brien, P.T.1528074127Physical TherapistBolivia, NC2006
Maureen O'Brien, RD1558539817Registered DietitianNewark, DE2008
Maureen O'Brien, OTR/L1639144827Neurorehabilitation Occupational TherapistFort Knox, KY2006
Maureen O'Brien, PA1669663274Physician AssistantIthaca, NY2007
Maureen O'Brien, MS, APRN, CNP1699911461Family Nurse PractitionerLincolnshire, IL2008
Maureen O'Brien, M.D.1710194881Pediatric Hematology & Oncology PhysicianAurora, CO2007
Maureen O'Brien, PA1740275148Surgical Physician AssistantAnnapolis, MD2005
Maureen O'Brien, PHARMD1932433687PharmacistBronx, NY2009
Maureen O'Brien1952378390Physical TherapistWynantskill, NY2006
Maureen O'Brien, M.D.1982716270Internal Medicine PhysicianBurlington, MA2006
Maurice O'Brien1275905382Case Manager/Care CoordinatorLake Charles, LA2015
McKenzie O'Brien1174384069Personal Care AttendantSouth Charleston, WV2024
McKenzie O'Brien1710749726Behavior TechnicianParker, CO2024
Meagan O'Brien, PA1114379732Physician AssistantAtlanta, GA2016
Meaghan O'Brien, CTRS, QMHP1396581328Case Manager/Care CoordinatorLafayette, CO2024
Meaghan O'Brien, PA-C1659620839Physician AssistantGrand Rapids, MI2012
Meg O'Brien1578914099Pediatric Occupational TherapistColorado Springs, CO2016
Megan O'Brien, FNP1033421110Community Health Nurse PractitionerBurlington, VT2010
Megan O'Brien, PA1073171591Physician AssistantHampton, IA2019
Megan O'Brien1124557517Developmental TherapistMilford, MA2017
Megan O'Brien1134609076Electroneurodiagnostic Specialist/TechnologistFairfield, NJ2018
Megan O'Brien1205612082Occupational TherapistChubbuck, ID2023
Megan O'Brien, CCC-SLP1205622263Speech-Language PathologistIndianapolis, IN2025
Megan O'Brien1285023820Psychiatric/Mental Health Registered NurseCulver City, CA2015
Megan O'Brien, OTR1346055449Occupational TherapistFredericksburg, VA2025
Megan O'Brien1356748271Case Manager/Care CoordinatorNew York, NY2014
Megan O'Brien, LICSW1376363747Clinical Social WorkerBellevue, WA2024
Megan O'Brien, PHARMD1386858355PharmacistLebanon, NH2007
Megan O'Brien, LCPC1437424769Professional CounselorEmporia, KS2012
Megan O'Brien, PA-C1447739255Physician AssistantChicago, IL2018
Megan O'Brien1467025122Behavior TechnicianIrwin, PA2021
Megan O'Brien1497607568Behavior TechnicianMonrovia, CA2026
Megan O'Brien, PT, DPT, NCS1508689456Neurology Physical TherapistLoveland, CO2024
Megan O'Brien1578600888Clinical Social WorkerNatick, MA2007
Megan O'Brien, MSW, LCSW1598125445Clinical Social WorkerPinedale, WY2016
Megan O'Brien, MSPT1598790578Physical TherapistWellsville, NY2006
Megan O'Brien, APRN1609020916Acute Care Nurse PractitionerLebanon, NH2008
Megan O'Brien, RBT1730754961Behavior TechnicianEdinburg, TX2021
Megan O'Brien, PMHNP1750784559Psychiatric/Mental Health Nurse PractitionerBerkeley, CA2014
Megan O'Brien1760038509Family Nurse PractitionerMarion, IA2019
Megan O'Brien, LCSW1821617911Clinical Social WorkerGrayslake, IL2020
Megan O'Brien, MFTI1831347541Mental Health CounselorNovato, CA2008
Megan O'Brien, MD1861029183Psychiatry PhysicianSan Francisco, CA2020
Megan O'Brien1871137588Marriage & Family TherapistDenver, CO2019
Megan O'Brien1932853777Mental Health CounselorKenilworth, IL2022
Megan O'Brien, M.A. CF-SLP1962926154Speech-Language PathologistCary, NC2017
Megan O'Brien, LCSW1992490221Clinical Social WorkerGainesville, GA2023
Meghan O'Brien1134803117Student in an Organized Health Care Education/Training ProgramNashua, NH2023
Meghan O'Brien, APN1164774584Adult Health Nurse PractitionerOrlando, FL2012
Meghan O'Brien1184432312Adult CompanionGrand Island, NE2024
Meghan O'Brien, FNP-C1215813548Family Nurse PractitionerNorridge, IL2025
Meghan O'Brien1225780406PharmacistLaramie, WY2022
Meghan O'Brien, MD, MBE1245641539Internal Medicine PhysicianSan Francisco, CA2014
Meghan O'Brien1326973108Professional CounselorOmaha, NE2026
Meghan O'Brien, LCSW1518174952Clinical Social WorkerStratford, CT2007
Meghan O'Brien, MD1740926328Family Medicine PhysicianSalem, OR2022
Meghan O'Brien, PMHNP-BC1821891052Psychiatric/Mental Health Nurse PractitionerFairfax, VA2025
Meghan O'Brien, LMT1902037757SpecialistSarasota, FL2009
Meghan O'Brien, CCC-SLP1922284868Speech-Language PathologistLos Angeles, CA2008
Melanie O'Brien1083409221Mental Health CounselorSan Antonio, TX2025
Melanie O'Brien1932258555Developmental TherapistJacksonville, FL2007
Melinda O'Brien1629873724Student in an Organized Health Care Education/Training ProgramTulsa, OK2025
Melinda O'Brien, RPH1871103622PharmacistJohnstown, CO2020
Melissa O'Brien, COTA/L1003144726Occupational Therapy AssistantVoorhees, NJ2009
Melissa O'Brien, MS CCC-SLP1023267432Speech-Language PathologistNiskayuna, NY2008
Melissa O'Brien1104498005Behavior AnalystBroomall, PA2021
Melissa O'Brien, MS, RD, CSP, LDN1164042107Registered DietitianMemphis, TN2020
Melissa O'Brien, PHARMD, BCACP1457663981PharmacistNew Hyde Park, NY2010
Melissa O'Brien, NP1629485578Psychiatric/Mental Health Nurse PractitionerNew York, NY2014
Melissa O'Brien, RDH1770722746Dental HygienistColumbus, OH2009
Melissa O'Brien, A.T.C.1932174059Athletic TrainerCoudersport, PA2006
Melvern O'Brien, RN1043855588Addiction (Substance Use Disorder) Registered NurseChehalis, WA2019
Melville O'Brien1801590641Internal Medicine PhysicianJacksonville, FL2023
Meredith O'Brien, LCSW1558663641Clinical Social WorkerFreehold, NJ2010
Meredith O'Brien, APRN, CRNA1780048702Certified Registered Nurse AnesthetistRochester, MN2016
Merl O'Brien, M.D.1386687317Emergency Medicine PhysicianCarmichael, CA2006
Merrilee O'Brien, LMFT1538209218Mental Health CounselorTorrance, CA2007
Micah O'Brien, PTA1568830511Physical Therapy AssistantMilwaukie, OR2015
Miceal O'Brien1780833574Mental Health CounselorCherry Hill, NJ2008
Michael O'Brien, RN1003408881Registered NurseMilford, MA2021
Michael O'Brien, DO1043343056Internal Medicine PhysicianNorth Conway, NH2007
Michael O'Brien1043686462Pulmonary Disease PhysicianPittsburgh, PA2015
Michael O'Brien, MSPT1063582468Physical TherapistTumwater, WA2006
Michael O'Brien, MD1093394082Orthopaedic Surgery PhysicianBirmingham, AL2021
Michael O'Brien, PA-C1104887884Physician AssistantHalfmoon, NY2006
Michael O'Brien, MD1104960657Sports Medicine (Orthopaedic Surgery) PhysicianNew Orleans, LA2007
Michael O'Brien, D.O.1124361720Anesthesiology PhysicianCanton, OH2013
Michael O'Brien, CMII1134583883Case Manager/Care CoordinatorNorman, OK2016
Michael O'Brien, MD1144203241Internal Medicine PhysicianLa Crosse, WI2005
Michael O'Brien, DDS1164448635DentistNorthampton, MA2006
Michael O'Brien1194539924Mental Health CounselorPortland, OR2025
Michael O'Brien, M.D.1194777888Diagnostic Radiology PhysicianWaukesha, WI2006
Michael O'Brien, M.D.1215257100Internal Medicine PhysicianKing Of Prussia, PA2010
Michael O'Brien1215337134PharmacistMt Pleasant, SC2014
Michael O'Brien, DO1245081454Internal Medicine PhysicianPark Ridge, IL2024
Michael O'Brien, PTA1285092882Physical Therapy AssistantLouisville, KY2016
Michael O'Brien, CRNP1295082725Family Nurse PractitionerBeaver, PA2012
Michael O'Brien, CADC II, NCAC I1295173854Addiction (Substance Use Disorder) CounselorSonoma, CA2013
Michael O'Brien, MD1306842661Orthopaedic Surgery PhysicianEdgewood, KY2005
Michael O'Brien, PHD1326011669Clinical Social WorkerIndianapolis, IN2006
Michael O'Brien, M.D.1386175701Neurological Surgery PhysicianWaterbury, CT2017
Michael O'Brien, M.D.1386628170Family Medicine PhysicianPoland, OH2005
Michael O'Brien, DDS, JD1407065162Oral and Maxillofacial Surgery (Dentist)Baton Rouge, LA2007
Michael O'Brien1417672114Behavior TechnicianFresno, CA2022
Michael O'Brien, MD1437738168Pediatrics PhysicianWashington, DC2021
Michael O'Brien, CASE MANAGER1447639612Case Manager/Care CoordinatorDenver, CO2015
Michael O'Brien1508611658Student in an Organized Health Care Education/Training ProgramNashville, TN2024
Michael O'Brien, ADC-T1518687243Addiction (Substance Use Disorder) CounselorSaint Paul, MN2022
Michael O'Brien, M.D.1528037710Orthopaedic Surgery PhysicianLa Follette, TN2006
Michael O'Brien, M.EQ.1548395114PsychologistSaint Paul, MN2007
Michael O'Brien, MD1598907453Family Medicine PhysicianReno, NV2009
Michael O'Brien, RN1629081310Administrator Registered NurseLeeds, MA2006
Michael O'Brien, DMD1629451067DentistOkmulgee, OK2015
Michael O'Brien, DDS1629480363General Practice DentistryRaleigh, NC2014
Michael O'Brien, M.D.1649502675SpecialistWest Lake Hills, TX2010
Michael O'Brien, BCBA1699291393Behavior AnalystJeffersonville, IN2017
Michael O'Brien, MD1700858438Anatomic Pathology PhysicianBoston, MA2006
Michael O'Brien1710875927Social WorkerWest Des Moines, IA2025
Michael O'Brien, MD1720168172Vascular & Interventional Radiology PhysicianLakewood, CO2006
Michael O'Brien, MD, FAAEM1720357353Emergency Medicine PhysicianBuffalo, NY2011
Michael O'Brien, DPT1720455892Physical TherapistWhite Oak, PA2015

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).