NPPES file of Aug 9, 2026

Organizations Athletico LTD to Ati Holding LLC

300 organization NPIs in the federal registry, part 550 of 6,533 of the A to Z by practice name. Each row is the registry's record: the legal name, the NPI, the primary taxonomy, the location and the year the NPI was issued; the locations of one practice sit together. 152 link to a page of their own with the clinicians CMS lists billing through them.

CMS NPPES registry, monthly file · taxonomies as NUCC codes · method

OrganizationNPITaxonomyLocationNPI issued
Athletico LTD1679024376Physical TherapistChicago, IL0-18
Athletico LTD1679041396Clinic/CenterGladstone, MO1-12
Athletico LTD1679245385Clinic/CenterPeoria, AZ9-30
Athletico LTD1679297675Clinic/CenterLake Orion, MI0-03
Athletico LTD1679789036Physical TherapistLa Grange Park, IL5-15
Athletico LTD1679848444Physical TherapistChicago, IL3-13
Athletico LTD1679913966Physical TherapistOrland Park, IL7-01
Athletico, LTD1689114415Physical TherapistCarpentersville, IL2-27
Athletico LTD1689147977Clinic/CenterDallas, TX1-09
Athletico LTD1689338543Clinic/CenterPhoenix, AZ0-27
Athletico LTD1689343857Clinic/CenterCouncil Bluffs, IA9-10
Athletico LTD1689880403Physical TherapistAddison, IL5-16
Athletico, LTD1689974131Clinic/CenterSchererville, IN1-01
Athletico LTD1699158758Clinic/CenterBloomfield Hills, MI7-07
Athletico, LTD1699272864Physical Therapy Clinic/CenterChicago, IL4-12
Athletico LTD1699329193Clinic/CenterMenomonee Falls, WI8-01
Athletico LTD1699378778Clinic/CenterSaint Louis, MO1-19
Athletico LTD1699433185Clinic/CenterPlano, TX2-02
Athletico, LTD1699448654Clinic/CenterChesapeake, VA7-27
Athletico LTD1699981407Physical TherapistTinley Park, IL5-16
Athletico LTD1699981415Physical TherapistAurora, IL5-16
Athletico LTD1700130887Physical TherapistElmhurst, IL0-29
Athletico LTD1700269826Clinic/CenterRoyal Oak, MI7-07
Athletico LTD1700270717Physical TherapistWillowbrook, IL3-27
Athletico, LTD1700294709Physical TherapistRolling Meadows, IL7-23
Athletico, LTD1700516549Clinic/CenterTupelo, MS6-14
Athletico, LTD1710122361Physical TherapistChicago, IL2-11
Athletico LTD1710357728Physical TherapistUrbana, IL0-02
Athletico LTD1710555495Clinic/CenterPhoenix, AZ6-17
Athletico LTD1710616834Physical TherapistBattle Creek, MI6-06
Athletico, LTD1720223373Physical TherapistGurnee, IL2-11
Athletico LTD1720248933Clinic/CenterDes Plaines, IL6-11
Athletico LTD1720294531Physical TherapistChicago, IL5-16
Athletico, LTD1720445349Physical TherapistFlossmoor, IL1-27
Athletico LTD1720461833Clinic/CenterHowell, MI7-07
Athletico LTD1720681588Clinic/CenterFishers, IN1-16
Athletico LTD1720681729Clinic/CenterCincinnati, OH1-20
Athletico LTD1720743040Clinic/CenterCuyahoga Falls, OH1-02
Athletico LTD1730395559Physical TherapistMatteson, IL5-16
Athletico LTD1730782111Clinic/CenterFlorissant, MO1-18
Athletico LTD1730782327Clinic/CenterMontgomery, OH1-17
Athletico LTD1740495308Physical TherapistChicago, IL5-14
Athletico LTD1740748136Clinic/CenterSachse, TX3-05
Athletico LTD1740753037Clinic/CenterTucson, AZ1-09
Athletico, LTD1740772334Physical Therapy Clinic/CenterChicago, IL5-31
Athletico LTD1750032900Clinic/CenterIndependence, MO1-10
Athletico LTD1750225983Clinic/CenterKenosha, WI4-17
Athletico LTD1750597563Physical TherapistLisle, IL5-16
Athletico LTD1750650081Physical TherapistWinnetka, IL2-15
Athletico, LTD1750813002Physical TherapistChicago, IL3-28
Athletico LTD1750984514Clinic/CenterAvon, IN1-16
Athletico LTD1760085989Clinic/CenterJennings, MO1-19
Athletico LTD1760142939Clinic/CenterSpringfield, OH2-29
Athletico LTD1760698120Physical TherapistChicago, IL5-15
Athletico LTD1760950489Physical TherapistNew Berlin, WI1-12
Athletico LTD1770090300Clinic/CenterDearborn Heights, MI1-04
Athletico LTD1770186355Clinic/CenterMunster, IN1-17
Athletico LTD1770242380Clinic/CenterSouth Bend, IN2-10
Athletico LTD1770743973Physical TherapistBolingbrook, IL6-11
Athletico LTD1770799595Physical TherapistWheeling, IL5-16
Athletico LTD1780067884Clinic/CenterBrooklyn, MI7-07
Athletico LTD1780162305Clinic/CenterTaylor, MI8-06
Athletico LTD1780203091Clinic/CenterCommerce Township, MI4-16
Athletico LTD1780218651Clinic/CenterOlathe, KS2-28
Athletico LTD1780287136Clinic/CenterPalos Heights, IL1-18
Athletico LTD1780890590Physical TherapistLemont, IL5-16
Athletico, LTD1780978932Physical TherapistBerwyn, IL6-06
Athletico LTD1790388148Clinic/CenterNaperville, IL1-18
Athletico LTD1790388163Clinic/CenterSaint Louis, MO1-18
Athletico LTD1790437929Clinic/CenterWaco, TX1-19
Athletico LTD1790477362Clinic/CenterParma, OH5-23
Athletico LTD1790481372Clinic/CenterNorthville, MI2-06
Athletico LTD1801250378Physical TherapistChicago, IL4-11
Athletico LTD1801251558Physical TherapistBartlett, IL2-23
Athletico LTD1801348263Clinic/CenterSioux Falls, SD1-01
Athletico LTD1801371398Physical TherapistElkhorn, WI0-01
Athletico LTD1801513973Clinic/CenterGrand Rapids, MI0-20
Athletico LTD1811103625Physical TherapistChicago, IL5-16
Athletico LTD1811409030Clinic/CenterChicago, IL0-27
Athletico LTD1811621840Occupational TherapistClinton Township, MI7-14
Athletico LTD1811693062Clinic/CenterCrown Point, IN1-31
Athletico LTD1811831043Clinic/CenterTwin Lakes, WI4-17
Athletico LTD1821085028Rehabilitation Clinic/CenterOak Brook, IL0-03
Athletico LTD1821204645Physical TherapistWestchester, IL5-16
Athletico LTD1821471988Clinic/CenterMarshall, MI7-07
Athletico LTD1821762113Clinic/CenterDallas, TX8-02
Athletico LTD1831305648Physical TherapistChicago, IL5-16
Athletico LTD1831792415Clinic/CenterMiddletown, OH1-17
Athletico LTD1841406659Physical TherapistWillowbrook, IL5-16
Athletico LTD1841843919Clinic/CenterTucson, AZ7-18
Athletico LTD1841893211Clinic/CenterBallwin, MO1-18
Athletico LTD1841964301Clinic/CenterDelaware, OH8-06
Athletico LTD1851159115Clinic/CenterGrand Blanc, MI3-11
Athletico LTD1861033888Clinic/CenterKansas City, MO0-01
Athletico LTD1861095010Clinic/CenterMukwonago, WI1-19
Athletico LTD1861276024Clinic/CenterSenatobia, MS8-21
Athletico LTD1861942377Clinic/CenterHamburg, MI0-07
Athletico LTD1871161596Clinic/CenterKansas City, MO6-17
Athletico LTD1871196642Clinic/CenterGreenwood, IN1-16
Athletico, LTD1871223610Clinic/CenterPontotoc, MS6-14
Athletico LTD1871247841Clinic/CenterPlano, TX2-09
Athletico LTD1871249631Clinic/CenterOklahoma City, OK3-01
Athletico LTD1871900985Clinic/CenterDes Moines, IA7-21
Athletico LTD1871948083Physical TherapistWoodridge, IL4-26
Athletico LTD1881024560Physical TherapistPalos Heights, IL1-18
Athletico LTD1881074573Physical TherapistChicago, IL6-08
Athletico LTD1881129757Clinic/CenterSouthfield, MI4-27
Athletico LTD1881167161Clinic/CenterDallas, TX1-09
Athletico LTD1881297257Clinic/CenterBridgeton, MO1-18
Athletico LTD1881800605Physical TherapistBarrington, IL5-16
Athletico LTD1891030698Physical TherapistChicago, IL2-05
Athletico LTD1891240313Physical TherapistLincolnshire, IL8-25
Athletico LTD1891370177Clinic/CenterIndianapolis, IN3-17
Athletico LTD1891398657Clinic/CenterGreencastle, IN1-16
Athletico LTD1891511069Clinic/CenterLouisville, KY2-03
Athletico LTD1891955001Physical TherapistSkokie, IL6-11
Athletico LTD1902370919Clinic/CenterDetroit, MI1-14
Athletico LTD1902409386Clinic/CenterFenton, MO1-18
Athletico LTD1902431091Clinic/CenterScottsdale, AZ3-09
Athletico LTD1902540933Clinic/CenterLewisville, TX4-26
Athletico LTD1902740137Clinic/CenterSouth Milwaukee, WI4-17
Athletico LTD1912337791Physical TherapistWoodstock, IL1-15
Athletico LTD1912571969Clinic/CenterFlower Mound, TX5-14
Athletico LTD1912664616Clinic/CenterArlington, TX1-17
Athletico LTD1912670753Clinic/CenterLincoln, NE7-28
Athletico LTD1922214733Physical TherapistChicago, IL5-16
Athletico LTD1922498005Physical TherapistBloomington, IN1-28
Athletico LTD1922732957Clinic/CenterWhite Lake, MI7-14
Athletico, LTD1932630670Physical TherapistBloomington, IN3-24
Athletico LTD1932635869Clinic/CenterJackson, MI5-11
Athletico LTD1932672227Clinic/CenterMarana, AZ1-09
Athletico LTD1942767967Physical Therapy Clinic/CenterLenexa, KS2-26
Athletico LTD1942913132Clinic/CenterPerrysburg, OH1-03
Athletico, LTD1952032526Clinic/CenterRipley, MS6-23
Athletico LTD1952517765Physical TherapistSchaumburg, IL5-16
Athletico LTD1962005348Clinic/CenterWashington, MO1-18
Athletico, LTD1962711580Physical TherapistBloomingdale, IL9-30
Athletico LTD1962749846Physical TherapistCary, IL1-11
Athletico LTD1962818369Physical TherapistChicago, IL7-07
Athletico LTD1962885079Clinic/CenterDundee, MI7-07
Athletico LTD1962897728Clinic/CenterAnkeny, IA3-30
Athletico LTD1962953661Physical TherapistPalatine, IL0-18
Athletico LTD1962959809Physical TherapistHanover Park, IL9-08
Athletico LTD1972039303Clinic/CenterChesterfield, MI5-04
Athletico LTD1972106961Clinic/CenterChicago, IL1-20
Athletico LTD1972161875Clinic/CenterWest Bloomfield, MI6-05
Athletico LTD1972166718Clinic/CenterGrand Rapids, MI4-17
Athletico LTD1972209559Clinic/CenterMason, OH2-06
Athletico LTD1972267839Clinic/CenterPhoenix, AZ0-27
Athletico LTD1972719797Physical TherapistGrayslake, IL5-16
Athletico LTD1982257655Clinic/CenterTucson, AZ7-22
Athletico LTD1982810347Physical TherapistChicago, IL5-15
Athletico LTD1992047955Physical TherapistCarmel, IN3-18
Athletico LTD1992160287Clinic/CenterSterling Heights, MI2-31
Athletico LTD1992188007Clinic/CenterHudson, MI7-07
Athletico LTD1992401574Clinic/CenterSouth Lyon, MI2-06
Athletico LTD1992437834Clinic/CenterGreenville, TX6-29
Athletico LTD1992649123Clinic/CenterKenosha, WI4-17
Athletico Excel Nebraska, LLC1013407733Clinic/CenterOmaha, NE5-17
Athletico Excel Nebraska, LLC1053811802Physical TherapistOmaha, NE2-19
Athletico Excel Nebraska, LLC1154821619Clinic/CenterBellevue, NE2-20
Athletico Excel Nebraska, LLC1205336765Physical TherapistOmaha, NE2-20
Athletico Excel Nebraska, LLC1265932719Physical TherapistOmaha, NE2-20
Athletico Excel Nebraska, LLC1265932792Clinic/CenterGrand Island, NE2-21
Athletico Excel Nebraska, LLC1346740800Physical TherapistElkhorn, NE2-20
Athletico Excel Nebraska, LLC1356934616Clinic/CenterOmaha, NE2-18
Athletico Excel Nebraska, LLC1396235016Clinic/CenterOmaha, NE5-17
Athletico Excel Nebraska, LLC1477012177Clinic/CenterLincoln, NE3-13
Athletico Excel Nebraska, LLC1548760077Clinic/CenterFremont, NE2-21
Athletico Excel Nebraska, LLC1659871119Physical TherapistOmaha, NE2-20
Athletico Excel Nebraska, LLC1740743327Clinic/CenterElkhorn, NE4-10
Athletico Excel Nebraska, LLC1790275584Clinic/CenterLincoln, NE5-16
Athletico Excel Nebraska, LLC1790331601Clinic/CenterGretna, NE8-15
Athletico Excel Nebraska, LLC1801396338Clinic/CenterColumbus, NE2-21
Athletico Excel Nebraska, LLC1811497373Physical TherapistPapillion, NE2-20
Athletico Excel Nebraska, LLC1952819963Clinic/CenterOak Brook, IL1-12
Athletics Sports Medicine1144339334Sports Medicine (Neuromusculoskeletal Medicine) PhysicianSaint Louis, MO8-30
Athleticsmd1689546830Anesthesiology PhysicianLaurel, MD9-18
Athletik Rx LLC1942187380Physical TherapistHuntersville, NC8-18
Athletity, LLC1528557121Physical TherapistDublin, OH5-09
Athletix1356009799Physical Therapy Clinic/CenterSouthlake, TX2-02
Athletix Lab Sports Therapy LLC1700739059Physical Therapy Clinic/CenterRinggold, GA2-17
Athletix Rehab And Recovery, LLC1063879427Physical TherapistMiami, FL1-15
Athletix Rehab And Recovery, LLC1306443221Physical TherapistDeerfield Beach, FL0-04
Athletix Rehab And Recovery, LLC1801301015Physical TherapistDavie, FL2-11
Athletix Rehab And Recovery Davie, LLC1518555440Physical TherapistDavie, FL1-06
Athletix Rehab And Recovery Deerfield, LLC1114515046Physical TherapistDeerfield Beach, FL1-06
Athletx Performance & Rehab LLC1467212977Physical TherapistFrisco, TX3-21
Athlon Med Supply LLC1194563544Durable Medical Equipment & Medical SuppliesBeloit, WI7-18
Athlon Physical Therapy, INC1093763468Physical TherapistMoon Township, PA5-05
Athlon Physical Therapy, LLC1245449909Physical Therapy Clinic/CenterTucson, AZ5-21
Athlon Physical Therapy, LLC1639236581Physical Therapy Clinic/CenterOro Valley, AZ1-02
Athlon Physical Therapy, LLC1780963744Physical Therapy Clinic/CenterTucson, AZ8-09
Athlon Physical Therapy, LLC1861931644Physical Therapy Clinic/CenterGreen Valley, AZ2-14
Athlos Academy1013500099Local Education Agency (LEA)Herriman, UT2-19
Athlos Academy1528642352Local Education Agency (LEA)Terrytown, LA5-07
Athlos Academy Of St. Cloud1972038909Local Education Agency (LEA)Saint Cloud, MN4-27
Athlos Physical Therapy And Fitness, PC1508653262Physical Therapy Clinic/CenterWest Hollywood, CA4-24
Athman Counseling Services LLC1609335728Mental Health CounselorBecker, MN3-18
Athmindset LLC1073265278Clinical Social WorkerAlameda, CA1-19
Athnetik LLC1982394797Physical TherapistFerris, TX5-15
Athol Family Pharmacy Incorporated1598858938Community/Retail PharmacyAthol, MA9-30
Athol Memorial Hospital Incorporated1073049441Rural Health Clinic/CenterAthol, MA5-04
Athol Memorial Hospital Incorporated1336120047Critical Access HospitalAthol, MA1-09
Athol Memorial Hospital Incorporated1659241560Medicare Defined Swing Bed Hospital UnitAthol, MA1-06
Athol Memorial Hospital Incorporated1952966491Rural Health Clinic/CenterAthol, MA5-09
Athol Pharmacy, LLC1225717861Community/Retail PharmacyAthol, MA7-12
Athol Pharmacy, LLC1407398589Long Term Care PharmacyAthol, MA1-07
Athol Royalston Regional School District1508984220Local Education Agency (LEA)Athol, MA3-27
Athome Advantage Care LLC1427941327In Home Supportive Care AgencyIndian Creek, IL5-30
Athome Care Company1427701689In Home Supportive Care AgencyAmes, IA1-28
Athome Care Support1386332872Mental Health Clinic/Center (Including Community Mental Health Center)Baltimore, MD4-24
Athome Community Services, LLC1073077871Community Health WorkerLa Grange, TX1-25
Athome Compassionate Care1972080117Nurse PractitionerHarrison, TN7-20
Athome Healthcare1952927055Home Health Registered NurseTustin, CA6-24
Athome Healthcare Team, LLC1285043141Home Health AgencyAmerican Canyon, CA8-05
Athome Healthcare Team - East Bay, LLC1477038982Home Health AgencyWalnut Creek, CA0-01
Athome Healthcare Team - Peninsula LLC1295373751Home Health Registered NurseBurlingame, CA2-16
Athome Hospice Care LLC1265900062Community Based Hospice Care AgencyAmerican Canyon, CA1-09
Athome Life Care LLC1770428963Home Health AgencyCocoa Beach, FL4-22
Athome Medical INC1447236567Oxygen Equipment & Supplies (DME)Morris Plains, NJ2-20
Athome Medical INC1639124068Oxygen Equipment & Supplies (DME)South Hackensack, NJ5-24
Athome Medical INC1871144931Oxygen Equipment & Supplies (DME)Howell, NJ9-20
Athome Medical1902989718Parenteral & Enteral Nutrition Supplies (DME)Eatontown, NJ0-23
Athome Patient Monitoring INC1831707645Assisted Living FacilityAllen, TX7-17
Athome Residential Services, LLC1144856618Developmental Disabilities Clinic/CenterWashington, DC3-17
Athome Solutions Healthcare LLC1710684360Personal Care AttendantCelina, TX2-14
Athome Therapy Solutions - Central LLC1790490985Physical TherapistClifton, NJ1-23
Athome Therapy Solutions-East West, LLC1477254266Home Health AgencyRidgefield, NJ3-17
Athome Therapy Solutions - South LLC1871209577Physical TherapistClifton, NJ1-25
Athome Therapy Solutions-West1477364321Home Health AgencyParamus, NJ1-17
Athomecare4seniors1053144907In Home Supportive Care AgencyDetroit, MI8-24
Athometherapy Solutions, PLLC1740617901Home Health AgencyCordova, TN0-03
Athon, Corp.1679563266Durable Medical Equipment & Medical SuppliesJuana Diaz, PR0-25
Athos G Colon Md PA1316143597Pediatric Cardiology PhysicianLubbock, TX6-25
Athos Home Health1225436330Home Health AgencyFort Worth, TX2-05
Athos Wellness LLC1265059497Health Service Clinic/CenterJefferson Township, PA7-03
Athwal Eye Associates, PC1659433142OptometristToms River, NJ2-14
Ati INC1164146627Clinical Medical LaboratoryLas Vegas, NV9-28
Ati INC1306248752Clinical Medical LaboratoryLas Vegas, NV9-17
Ati INC1962122523Clinical Medical LaboratoryLas Vegas, NV9-01
Ati Cpap Solutions1831673839Durable Medical Equipment & Medical SuppliesCrestview Hills, KY9-17
Ati Hakimi Md, Prof LLC1871942946Family Medicine PhysicianLas Vegas, NV6-08
Ati Holding LLC1003391806Physical TherapistForest Hill, MD9-27
Ati Holding LLC1003391830Physical TherapistOcean City, MD9-27
Ati Holding LLC1013492842Physical TherapistElkridge, MD9-27
Ati Holding LLC1033694930Physical TherapistRising Sun, MD9-27
Ati Holding LLC1063997864Physical TherapistGaithersburg, MD9-27
Ati Holding LLC1093290819Physical TherapistReisterstown, MD9-27
Ati Holding LLC1124503131Physical TherapistBel Air, MD9-26
Ati Holding LLC1235614058Physical TherapistSalisbury, MD9-27
Ati Holding LLC1245715069Physical TherapistCatonsville, MD9-27
Ati Holding LLC1255816054Physical TherapistCockeysville, MD9-27
Ati Holding LLC1265907489Physical TherapistGlen Burnie, MD0-04
Ati Holding LLC1265917066Physical TherapistMontgomery Village, MD9-27
Ati Holding LLC1265917082Physical TherapistSalisbury, MD9-27
Ati Holding LLC1295347649Physical TherapistLa Plata, MD8-18
Ati Holding LLC1326523143Physical TherapistCollege Park, MD9-27
Ati Holding LLC1326523150Physical TherapistElkton, MD9-27
Ati Holding LLC1336610617Physical TherapistTowson, MD2-11
Ati Holding LLC1336624139Physical TherapistColumbia, MD9-27
Ati Holding LLC1386102978Physical TherapistBaltimore, MD3-04
Ati Holding LLC1386129187Physical TherapistOwings Mills, MD9-27
Ati Holding LLC1417432212Physical TherapistBaltimore, MD9-27
Ati Holding LLC1427533223Physical TherapistBaltimore, MD9-27
Ati Holding LLC1437634250Physical TherapistWaldorf, MD9-27
Ati Holding LLC1447735246Physical TherapistHyattsville, MD9-27
Ati Holding LLC1457836272Physical TherapistRockville, MD9-27
Ati Holding LLC1467090399Physical TherapistAnnapolis, MD2-10
Ati Holding LLC1477038297Physical TherapistBaltimore, MD9-27
Ati Holding LLC1477038313Physical TherapistSilver Spring, MD9-26
Ati Holding LLC1477038396Physical TherapistEdgewater, MD9-26
Ati Holding LLC1487139283Physical TherapistAbingdon, MD9-27
Ati Holding LLC1487292314Physical TherapistGreenbelt, MD2-10
Ati Holding LLC1528673878Physical TherapistClarksburg, MD9-14
Ati Holding LLC1538634753Physical TherapistLaurel, MD0-04
Ati Holding LLC1538644356Physical TherapistSilver Spring, MD9-27
Ati Holding LLC1568947380Physical TherapistPasadena, MD9-27
Ati Holding LLC1568947398Physical TherapistBaltimore, MD9-27
Ati Holding LLC1588149389Physical TherapistRockville, MD9-27
Ati Holding LLC1588149397Physical TherapistRosedale, MD9-27
Ati Holding LLC1629553458Physical TherapistElkton, MD9-27
Ati Holding LLC1689313652Physical TherapistClarksville, MD5-30
Ati Holding LLC1699250506Physical TherapistBelcamp, MD9-26
Ati Holding LLC1710462536Physical TherapistHanover, MD9-27
Ati Holding LLC1730664533Physical TherapistFallston, MD9-27
Ati Holding LLC1750866653Physical TherapistNorth East, MD9-27
Ati Holding LLC1821573643Physical TherapistSeverna Park, MD9-27
Ati Holding LLC1831674639Physical TherapistForestville, MD9-27
Ati Holding LLC1841775640Physical TherapistDundalk, MD9-27
Ati Holding LLC1841775749Physical TherapistOcean City, MD9-27
Ati Holding LLC1902381726Physical TherapistRandallstown, MD9-27
Ati Holding LLC1932684768Physical TherapistPerryville, MD9-27
Ati Holding LLC1932684941Physical TherapistAbingdon, MD9-26
Ati Holding LLC1942590732Physical TherapistDoylestown, PA4-13
Ati Holding LLC1942785746Physical TherapistBaltimore, MD9-27
Ati Holding LLC1942785845Physical TherapistUpper Marlboro, MD9-27
Ati Holding LLC1952690596Physical TherapistGlen Burnie, MD4-05
Ati Holding LLC1952886855Physical TherapistBaltimore, MD9-27
Ati Holding LLC1992369284Physical TherapistFrederick, MD4-23

Source: CMS National Plan and Provider Enumeration System (NPPES) (download.cms.gov).