NPPES file of Aug 9, 2026

Providers John John, MD to Natasha John, MD

300 individual NPIs in the federal registry, part 10,561 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. 123 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
John John, MD1497789507Psychiatry PhysicianWarren, PA2006
John John, MD1710368154Hospitalist PhysicianGainesville, GA2015
Johnathan John, M.D.1891732814Pediatric Cardiology PhysicianTampa, FL2006
Johncy Susan John, FNP-C1558081448Family Nurse PractitionerWest Haverstraw, NY2022
Joji John, RPH1043502842PharmacistKelso, WA2011
Joji John1972108926PharmacistDade City, FL2020
Jolly John, PA-C1740737444Physician AssistantAustin, TX2016
Jolu John, NP1922469568Family Nurse PractitionerMaywood, IL2016
Jonathan John1396610986Addiction (Substance Use Disorder) CounselorHomer, AK2025
Jones John, D.O.1972814895Nephrology PhysicianLauderhill, FL2010
Jooby John, M.D.1891897880Interventional Cardiology PhysicianKissimmee, FL2006
Jordan John, MD1417503608Student in an Organized Health Care Education/Training ProgramNashville, TN2019
Jordan John, CPST.PE.701368501518887900Peer SpecialistAuburn, WA2026
Joseena John1215580659Community Health WorkerSan Francisco, CA2019
Joseph John, M.D.1114375078Pediatrics PhysicianAugusta, GA2016
Joseph John1427871615Social WorkerDenver, CO2024
Joseph John, M.D.1598866592Infectious Disease PhysicianCharleston, SC2006
Joseph John, MD1740270560Critical Care Medicine (Internal Medicine) PhysicianTyler, TX2005
Joseph John, PA-C1790733368Physician AssistantNorfolk, VA2006
Joseph John, D.O,1811255896Diagnostic Radiology PhysicianShreveport, LA2012
Josephine John1063375012Nurse PractitionerHallandale Beach, FL2025
Josh John1659036218Physical TherapistRamsey, NJ2021
Josh John1922937499Student in an Organized Health Care Education/Training ProgramOklahoma City, OK2026
Joshi John, MD1134298409Psychiatry PhysicianSyosset, NY2006
Joshia John, DO1215788203Student in an Organized Health Care Education/Training ProgramHouston, TX2024
Joshua John, DMD1851744775General Practice DentistryWaterford, CT2016
Joshuva John, DO1750964326Internal Medicine PhysicianPittsburgh, PA2021
Joslin John, FNP1508417361Family Nurse PractitionerBuford, GA2019
Joslyn John, MD1619205325Physical Medicine & Rehabilitation PhysicianHouston, TX2009
Jossy John, FNP-BC1700696689Family Nurse PractitionerCongers, NY2025
Josy John, APRN, FNP-BC1689276164Nurse PractitionerHouston, TX2020
Joveena John1922813922Medical Physician AssistantSanta Monica, CA2025
Joy John, DMD1346653409Pediatric DentistryDuxbury, MA2014
Joyanne John1376372268Registered NursePlymouth, MA2024
Joyce John1255888400Pediatrics PhysicianWhite Plains, NY2016
Joyce John1275998833Family Nurse PractitionerGrand Blanc, MI2015
Joyce Salu John1982490702Student in an Organized Health Care Education/Training ProgramBrooklyn, NY2025
Jubin John, OTR/L1518530534Occupational TherapistGreat Neck, NY2021
Judy John1831071273Mental Health CounselorBrooklyn, NY2025
Julia John, PA-C1467239467Medical Physician AssistantLewisville, TX2023
Julianne John1689292856Psychiatric/Mental Health Nurse PractitionerMilwaukee, WI2020
Julie John, MD1487816989Internal Medicine PhysicianPhiladelphia, PA2008
Julie John1740024827Acute Care Nurse PractitionerRockwall, TX2024
Julie John1780851584Physician AssistantAlbertson, NY2008
Julie John1922540541SpecialistStaten Island, NY2016
Juliet John, FNP1952010076Family Nurse PractitionerPhiladelphia, PA2022
Juny John1891307146PharmacistWinter Haven, FL2020
Justice John1689528341Day Training/Habilitation SpecialistAnchorage, AK2026
Justin John, RN1013647205Certified Registered Nurse AnesthetistNew York, NY2022
Justin John, NP1104529890Family Nurse PractitionerLiverpool, NY2023
Justin John, PT, DPT1477432532Orthopedic Physical TherapistLewisville, TX2025
Justin John, M.D.1942487970Pediatric Anesthesiology PhysicianNorfolk, VA2008
Justine John1538787841Clinical Social WorkerCrookston, MN2020
Justine John1629645114Social WorkerGlen Oaks, NY2021
Justy John1588318786Clinical Social WorkerNew City, NY2022
Karen John, SLP1083803365Speech-Language PathologistScottsdale, AZ2007
Karen John, LPN1093151789Licensed Practical NurseCheektowaga, NY2013
Karen John1245176924Personal Care AttendantCanyon Lake, CA2026
Karen John1659947901Student in an Organized Health Care Education/Training ProgramNew York City, NY2021
Karen John1710208905CounselorWinston Salem, NC2010
Karen John, LMSW1891919106Mental Health CounselorRexburg, ID2007
Karie John1932624194Behavior TechnicianTampa, FL2017
Kasha John1194522532Case Manager/Care CoordinatorGallup, NM2025
Katelyn John, RDN, LD1689272965Registered DietitianBoise, ID2020
Kathleen John1841503075Licensed Practical NurseBrooklyn, NY2010
Katie John, FNP1013236827Family Nurse PractitionerBarre, VT2010
Katie John1396483889Case Manager/Care CoordinatorSalt Lake City, UT2022
Katie John1407061971Other TechnicianPeach Springs, AZ2007
Katie John1669065538Speech-Language PathologistManassas, VA2021
Katie John1871143099Behavior TechnicianHarrisburg, PA2019
Katrina John, M.B.B.CH.1255569786Emergency Medicine PhysicianSan Diego, CA2009
Katrina John1639935455Behavior TechnicianColorado Springs, CO2024
Katryna John1477395465Speech-Language PathologistSan Antonio, TX2024
Kavya John1760322374Student in an Organized Health Care Education/Training ProgramSeattle, WA2026
Kayla John1033907274Behavior TechnicianRiverview, FL2025
Kayla John1043721699Registered NurseRosedale, NY2017
Kayla John, APRN1437771458Family Nurse PractitionerPalm Beach Gardens, FL2020
Kayla John1790582146Ambulatory Care Registered NurseJacksonville, FL2025
Kayla John, PHARMD1972165769PharmacistColumbus, OH2019
Kayley John, MS, CCC-SLP1356879555Speech-Language PathologistSavannah, GA2017
Keisha John, P.T.1033210406Physical TherapistBrooklyn, NY2006
Kelly John, PA-C1295764165Physician AssistantCharlotte, NC2006
Kelly John1790322436Physical TherapistHayden, ID2019
Kelly John1801540240Physical TherapistBrevard, NC2022
Kelly John, D.P.M1922113273PodiatristDes Moines, IA2006
Kelsie John, SW1891372231Social WorkerElkins, WV2021
Kelsy John, AUDIOLOGIST1093987117AudiologistHouston, TX2008
Kendall John, PHD1518647288Clinical PsychologistSan Antonio, TX2023
Kendall John1669769956SpecialistFort Defiance, AZ2011
Kendra John1902751977Registered NurseQueens Village, NY2026
Kenneth John, MD1396302147Anesthesiology PhysicianGainesville, FL2019
Keren John, PA- CERTIFIED1285190462Physician AssistantNew London, CT2019
Kerry John, OD1891788212OptometristLa Grange, IL2005
Keston John, MD1417519794Obstetrics & Gynecology PhysicianChicago, IL2019
Kevin John1003459314Behavior TechnicianRichmond, MI2019
Kevin John, MD1053045500Internal Medicine PhysicianBoston, MA2022
Kevin John1063266138Medical Physician AssistantDover, NJ2024
Kevin John, MD1114424439Diagnostic Radiology PhysicianAnn Arbor, MI2018
Kevin John, DO1417750506Student in an Organized Health Care Education/Training ProgramMaywood, IL2025
Kevin John1700629649Neurology PhysicianGalveston, TX2024
Kevin John, DO1922684331Physical Medicine & Rehabilitation PhysicianBoynton Beach, FL2021
Keyanna John1710866462PharmacistAtlanta, GA2025
Khushbu John, PHARMD1417551870PharmacistRichboro, PA2020
Kimberly John1316814411Behavior TechnicianChandler, AZ2025
Kimberly John1376179952Registered NurseLoma Linda, CA2020
Kimberly John1629928403Speech-Language AssistantSan Bernardino, CA2026
Kimorah John, RBT1730766965CounselorEverett, WA2021
Kirk John, ED.D.1568785947Cognitive & Behavioral PsychologistUniontown, PA2010
Kofi John1760825475Home Health AideWashington, DC2013
Koshy John, DPT, PTA, MS, ATC1417443904Physical Therapy AssistantGarden City, NY2018
Kozhimala John, MD1891890638Internal Medicine PhysicianZephyrhills, FL2006
Kristen John, LMFT1346605490Marriage & Family TherapistAltoona, PA2015
Kristen John1528993235Mental Health CounselorSugar Land, TX2026
Kristen John, MD1659160943Student in an Organized Health Care Education/Training ProgramProvidence, RI2025
Krystal John, M.D.1710720834Student in an Organized Health Care Education/Training ProgramCincinnati, OH2024
Kunjamma John, NP1861530941Gerontology Nurse PractitionerNew York, NY2007
Kuriakose John1811244262PharmacistWestbury, NY2012
Kuruvilla John, M.D.1295826493Neurology PhysicianCleveland, OH2006
Kyle John, M.D.1518031699Child & Adolescent Psychiatry PhysicianSpringfield, MO2006
Kylie John1154001055Nurse PractitionerOmaha, NE2023
Laura John, APSW.CSAC1124539713Addiction (Substance Use Disorder) CounselorMenasha, WI2017
Laura John1528269693Personal Care AttendantKeams Canyon, AZ2007
Laurie John1134717770Other TechnicianFairbanks, AK2021
Laveena John1649929860Internal Medicine PhysicianSaint Louis, MO2022
Lawrence John1821061409SpecialistPittsburgh, PA2006
Leah John, D.C.1659118396ChiropractorCoopersburg, PA2024
Leah John1811771462Anesthesiologist AssistantPembroke Pines, FL2023
Leah John1932529195Cardiovascular Disease PhysicianCordova, TN2014
Leann John, MS, RD, LDN1033342209Registered DietitianJacksonville, FL2009
Leena John1013060425General Practice DentistryBaltimore, MD2007
Leena John1295486405Behavior TechnicianEnglewood, CO2022
Leena John, APN1467876557Adult Health Nurse PractitionerDallas, TX2014
Leena John, PHARM. D.1487976809PharmacistAmityville, NY2010
Leena John, FNP-C1811254907Family Nurse PractitionerAtlanta, GA2012
Lenia John, APRN1487147849Psychiatric/Mental Health Nurse PractitionerHouston, TX2018
Lesley John, APRN1396363107Psychiatric/Mental Health Nurse PractitionerAllen, TX2020
Lesley John, LMSW1861964496Social WorkerHempstead, NY2018
Leslieanne John1306640081DoulaJersey City, NJ2025
Letitia John1770371114Mental Health CounselorQueens Village, NY2025
Liam John, MD1871296293Student in an Organized Health Care Education/Training ProgramPortland, ME2023
Libby John, AGNP1598149932Adult Health Nurse PractitionerHouston, TX2015
Libiny John, FNP1194960088Family Nurse PractitionerStaten Island, NY2008
Ligitha John, RN1073076766Registered NurseMiami, FL2019
Ligy John, PT1699968917Physical TherapistTeaneck, NJ2007
Liji John, MD1194303594Family Medicine PhysicianMesquite, TX2021
Lijo John, MD1295050037Medical Oncology PhysicianLongview, TX2010
Lijo John, DPM1639552029Foot & Ankle Surgery PodiatristChicago, IL2015
Lijo John, PHARM.D.1699160788PharmacistSpringfield, NJ2015
Liju John, M.D.1841634185Physical Medicine & Rehabilitation PhysicianChillicothe, OH2013
Lillian John, OTR/L1679398309Occupational TherapistGrand Rapids, MI2024
Linda John, PT1124145867Physical TherapistFrisco, TX2007
Linda John, LCSW1194870493Clinical Social WorkerAmawalk, NY2007
Lindsay John, M. D.1184649105Infectious Disease PhysicianTemple, TX2006
Lindsey John, PT, DPT1245841535Physical TherapistLakeville, MN2020
Linette John1801376454Licensed Practical NurseBrentwood, NY2018
Linju John, PHARM. D1154649184PharmacistRichboro, PA2010
Linnea John, COTA/L1780954081Occupational Therapy AssistantFairbanks, AK2012
Liny John1841618493Pediatric Hematology & Oncology PhysicianWashington, DC2014
Liny John1871905497Pediatric DentistryFrisco, TX2014
Lisa John, ARNP1235961723Family Nurse PractitionerMonroe, WA2024
Lisa John1366759219Mental Health CounselorLynn, MA2010
Lisa John1710280698CounselorAda, OK2010
Lisa John, MSW, LADAC1861686446Addiction (Substance Use Disorder) CounselorKayenta, AZ2007
Lisa John1881466290Case Management Registered NurseBrooklyn, NY2023
Lisa-Marie John1780410910Behavior TechnicianOrlando, FL2024
Lisabeth John, OT1760443428Occupational TherapistGrand Island, NE2006
Lissy John, DDS1235493370DentistGalveston, TX2012
Litty John, MBBS1932606431Anesthesiology PhysicianMinneapolis, MN2018
Lizzy John1063911675Adult Psychiatric/Mental Health Registered NurseQueens Village, NY2018
Lois John1518829316Addiction (Substance Use Disorder) CounselorToppenish, WA2025
Lola John, DMD1245544782General Practice DentistryEast Amherst, NY2010
Lora John, PT, DPT1609541028Physical TherapistBethesda, MD2021
Lorraine John, ARNP1437314044Psychiatric/Mental Health Nurse PractitionerPalm Bay, FL2008
Lucas John, MD1144808262Family Medicine PhysicianAsheville, NC2021
Lucy John1801728035Behavior TechnicianCary, NC2026
Ludiamma John, OD1942336144OptometristBaytown, TX2007
Lynda John1477604114Speech-Language PathologistDuluth, MN2007
Lynda John, LCSW-R1710181508Case Manager/Care CoordinatorBrooklyn, NY2007
Lynne John, OTR/L1528359643Hand Occupational TherapistGardena, CA2011
Mabel John1578952578Licensed Practical NurseHempstead, NY2015
Macy John, PHARMD1558206698Oncology PharmacistJefferson City, MO2026
Madelyne John, DPT1124718093Physical TherapistBeachwood, OH2023
Madhu John, MD1588639702Radiation Oncology PhysicianFresno, CA2006
Madison John1275106197Behavior AnalystDenver, CO2021
Madison John1285592188Student in an Organized Health Care Education/Training ProgramSpencerport, NY2026
Mae John, MS CF SLP1881881365Speech-Language PathologistFt Defiance, AZ2007
Magdaline John1881086155Day Training/Habilitation SpecialistBethel, AK2015
Maggi John1669193835Mental Health CounselorSpokane, WA2022
Makeeda John, LMSW1710652201Social WorkerBrooklyn, NY2021
Makenna John, PA1154050003Surgical Physician AssistantHays, KS2022
Mala Anna John, MD1154096279Internal Medicine PhysicianNew York, NY2021
Malcolm John, MD1003872870Internal Medicine PhysicianSan Francisco, CA2006
Manju John1194987313Cardiovascular Disease PhysicianMiddletown, CT2008
Marcus John, M.ED, CRC, LPC, LMHC1730765934Mental Health CounselorTukwila, WA2021
Marcus John, LCSW-C1770306557School Social WorkerGaithersburg, MD2024
Margaret John, DC1558504274ChiropractorArgyle, TX2009
Maria John1225723158Behavior TechnicianNapa, CA2023
Mariamma John, RN1528253564Registered NurseRoslyn Hts, NY2007
Marie John, M.D1295897064Pediatrics PhysicianPensacola, FL2006
Mario John, MD1407012164Orthopaedic Surgery PhysicianLakeland, FL2008
Marissa John, LCSW1831773480Clinical Social WorkerJacksonville, FL2021
Marita John1023812500Student in an Organized Health Care Education/Training ProgramPhillipsburg, NJ2025
Mariya John, MD1164368791Student in an Organized Health Care Education/Training ProgramLansing, MI2026
Markus John, M.D.1417167750Pain Medicine (Physical Medicine & Rehabilitation) PhysicianBaton Rouge, LA2007
Marlin John1316670177OptometristNorthport, NY2022
Marlon John1982351821Speech-Language PathologistBowie, MD2022
Martha John1568053569Registered NurseColumbus, OH2021
Martha John, MD1871596056Pediatrics PhysicianPittsburgh, PA2005
Martin John, AU.D.1215988738AudiologistYakima, WA2006
Martin John1538290457Mental Health CounselorYuba City, CA2007
Martin John, MD1871243451Student in an Organized Health Care Education/Training ProgramNew York, NY2022
Mary John1114715174Personal Care AttendantLincoln, NE2025
Mary John, M.D.1306925904General Practice DentistryVestal, NY2006
Mary John1386370666Certified Registered Nurse AnesthetistAllentown, PA2022
Mary John1841081973Addiction (Substance Use Disorder) CounselorWalnut Creek, CA2025
Mary John1851666077Mental Health CounselorBrooklyn, NY2012
Marylin John1386344323Physician AssistantNew York, NY2023
Mathew John, D.P.M1497740229Foot & Ankle Surgery PodiatristMarietta, GA2005
Mathews John, M.D.1174571574Psychiatry PhysicianTerre Haute, IN2006
Matix John1316622970Behavior TechnicianHenderson, NV2023
Matt John, PHARM.D., MBA1134400658Pharmacist Clinician (PhC)/ Clinical Pharmacy SpecialistOklahoma City, OK2011
Matt John, MHPP1578773255Case Manager/Care CoordinatorFayetteville, AR2007
Matthew John, DMD1447773775General Practice DentistryLower Burrell, PA2017
Matthew John, MD1841228814Family Medicine PhysicianLees Summit, MO2006
Maxwell John, PTA1356731814Physical Therapy AssistantOregon, WI2015
Maya John1659165470Day Training/Habilitation SpecialistSan Francisco, CA2025
Meevel John1649820135PharmacistFrisco, TX2019
Megan John, OTR/L1457863342Occupational TherapistLake Zurich, IL2017
Megan John, RN1598206096Registered NurseAlbany, NY2017
Megan John, LCPC1750886628Professional CounselorLa Grange, IL2018
Megan John, APRN, AGCNS-BC1801634035Gerontology Clinical Nurse SpecialistJber, AK2024
Megin John, DPT1215228648Physical TherapistKahului, HI2011
Melissa John, M.D.1013295831Internal Medicine PhysicianMeadowbrook, PA2011
Melissa John, PHARMD1093357311Critical Care PharmacistGainesville, FL2019
Melissa John, RN1164825097Registered NurseBrooklyn, NY2014
Melissa John, M.S., CCC-SLP1235894940Speech-Language PathologistPittsburgh, PA2021
Melissa John, LMSW1427846617Social WorkerNew York, NY2025
Melissa John, PSYD, M.S., J.D.1528912441Clinical PsychologistMillvale, PA2026
Melissa John, APRN, CNP1609177674Gerontology Nurse PractitionerFargo, ND2010
Melissa John, RN1902528094Registered NurseAustin, TX2022
Melody John1417723826Massage TherapistMount Dora, FL2023
Melody John1992497192Student in an Organized Health Care Education/Training ProgramPassaic, NJ2023
Melorito John1376960765Case Manager/Care CoordinatorFarmington, NM2014
Mena John1447947742Psychiatric/Mental Health Registered NurseCulver City, CA2023
Mercy John, NP1437712155Family Nurse PractitionerDallas, TX2019
Mercy John, MSN, APRN, AGACNP-BC1770459752Acute Care Nurse PractitionerHouston, TX2025
Merin John, MD1770224149Family Medicine PhysicianTulsa, OK2022
Mertle John1194190157Licensed Practical NurseBronx, NY2015
Michael John, RN1285919969Registered NurseColville, WA2011
Michael John, MD1790788586Dermatology PhysicianEdmond, OK2005
Michael John, O.D.1922559384OptometristBock, MN2016
Michaela John, MD1477441905Student in an Organized Health Care Education/Training ProgramCleveland, OH2025
Michele John1679381255Personal Care AttendantLas Vegas, NV2024
Michelle John, O.T.R.1013145671Occupational TherapistBrownsville, TX2009
Michelle John1013269125Nurse's AideWhiteland, IN2012
Michelle John, RD1114233764NutritionistSt Augustine, FL2010
Michelle John, M.D.1336108208Internal Medicine PhysicianGresham, OR2006
Michelle John, OTR/L1417034588SpecialistJacksonville, AR2006
Michelle John1487189940Medical-Surgical Registered NurseGallup, NM2017
Michelle John, PMHNP1619569241Psychiatric/Mental Health Nurse PractitionerSeattle, WA2021
Michelle John, AU.D.1851549083AudiologistHouston, TX2008
Mignole John1568712214Licensed Practical NurseBrooklyn, NY2012
Mihir John, MD MPH1407505399Hospitalist PhysicianChicago, IL2022
Mikayla John1619809423Behavior TechnicianOdenton, MD2026
Mike John, DDS1386865814DentistMinneapolis, MN2007
Mina John, PHARM.D1487255055PharmacistSan Antonio, TX2020
Mini John, O.D.1215902200OptometristMissouri City, TX2006
Mini John1902602998Registered NurseGarland, TX2025
Minna John1548638448Primary Care Nurse PractitionerSchaumburg, IL2015
Minnie John, M.D.1790745032Pediatric Infectious Diseases PhysicianBrooklyn, NY2006
Minnie John, RPH1982733366PharmacistDumont, NJ2007
Mintu John, MD1366904732Internal Medicine PhysicianHigh Point, NC2019
Mira John, MD1013448588Critical Care Medicine (Internal Medicine) PhysicianLa Jolla, CA2017
Miriam John, PH.D.1245220169Clinical PsychologistLarchmont, NY2005
Miriam John, MD1669425369Emergency Medicine PhysicianNewark, NJ2006
Miriam John1932510161Occupational TherapistPhiladelphia, PA2014
Mirian John1457752784Developmental TherapistDeerfield Beach, FL2014
Misty John, PHARM. D1669574885PharmacistDallas, TX2006
Mitchell John, MD1396240057Orthopaedic Hand Surgery PhysicianGolden, CO2018
Mohan John, M.B.B.S.1346522463Thoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianAtlanta, GA2011
Molly John, M.D.1659479749Internal Medicine PhysicianCharleston, WV2006
Moncy John, FNP1043634686Family Nurse PractitionerBakersfield, CA2014
Monique John1720793680Behavior TechnicianAurora, CO2023
Monique John1942556709Home Health AideWashington, DC2012
Monisha John1477000354Family Nurse PractitionerDavie, FL2016
Monty John, CRNA1023088747Certified Registered Nurse AnesthetistChanute, KS2006
Moriah John, HEALTH EDUCATOR1194470435Community Health WorkerSalt Lake City, UT2022
Moses John1184471500Home Health AideAkron, OH2024
Mustapha John1174163778Rehabilitation PractitionerYucaipa, CA2020
Myasia John1528868163Behavior TechnicianTucker, GA2025
Nadia John, MD1225284946Pediatrics PhysicianWestbury, NY2008
Nadyah John, M.D.1699975102Psychiatry PhysicianGreenville, NC2007
Nalin John, MD1922748334Surgery PhysicianDes Moines, IA2022
Namitha John1376088807Speech-Language PathologistYonkers, NY2016
Nancy John, NURSE PRACTITIONER1164941282Family Nurse PractitionerDallas, TX2017
Naomi John, BEHAVIOR TECHNICIAN1386537603Behavior TechnicianTampa, FL2025
Nasira John1831649714Registered NurseTurlock, CA2016
Natalie John1295531234Personal Care AttendantWashington, DC2025
Natalie John1922581701Certified Registered Nurse AnesthetistNew York, NY2018
Natasha John, MD1831901867Surgery PhysicianCharleston, SC2025

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).