William Atlas, M.D.
Internal Medicine Physician · San Antonio, TX
William Atlas, M.D. is an internal medicine physician with a practice address in San Antonio, Texas, and NPI 1902881535, issued on Dec 6, 2005. Check the license (Texas H9186, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- William Atlas
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- H9186 TX
Self-reported in NPPES; status is on the state search - Practice location
- 540 Madison Oak Dr, San Antonio, TX 78258
- Phone
- (210) 404-9220
- Enumerated
- Dec 6, 2005
- Entity
- Type 1 · individual
Also registered at 540 Madison Oak Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ramiro BarrientosSurgical Assistant1558818047
- Melissa Binkley, LSASurgical Physician Assistant1992000418
- Yolanda Cantu, LSASurgical Physician Assistant1053743476
- Gloria Esparza, CSFASurgical Physician Assistant1497004642
- Jessica Francho, CSFASurgical Assistant1699186080
- Nancy Gann, PTPhysical Therapist1023027752
Verify William Atlas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license H9186Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
73% more Medicare Part D claims than the average internal medicine physician in 2024
4,813 Medicare Part D claims for 216 beneficiaries, against an average of 2,785 among the 127,794 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 15 claims were for opioids.
Most prescribed
- Atorvastatin Calcium324 claims
- Levothyroxine Sodium207 claims
- Olmesartan Medoxomil188 claims
- Rosuvastatin Calcium144 claims
- Amlodipine Besylate130 claims
- Gabapentin118 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
938 internal medicine physician records list a San Antonio practice address
They are 938 of the 37,749 NPPES records with a San Antonio practice address, and 11,069 internal medicine physician records in Texas.
All 938 in San Antonio → All 11,069 in Texas → Every provider in San Antonio →
Other internal medicine physician records in Texas
- Muhammad A. Sattar, MDDallas, TX1760465553
- Gayatri Aaluri, MDGalveston, TX1821928508
- Anunaya AashishDenton, TX1134246374
- Queenie Ann Abad, M.D.San Antonio, TX1174979785
- Fuad Abaleka, M.DLubbock, TX1861925596
- Carol Abalihi, M.D.El Paso, TX1326136243
- Pedro Abanto, M.D.McAllen, TX1982840393
- Oliverio Abarca Guzman, MDHarlingen, TX1346972940
- Obinna Abaribe, M.DMansfield, TX1457704355
- Enyinnaya Abarikwu, MDTyler, TX1174788178
Common questions
What is William Atlas, M.D.'s NPI number?
William Atlas, M.D.'s National Provider Identifier (NPI) is 1902881535, issued on Dec 6, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William Atlas, M.D. located?
The NPPES record lists a practice address at 540 Madison Oak Dr, San Antonio, TX, 78258. Phone: (210) 404-9220. Providers update this record themselves, so call before visiting.
How can I verify William Atlas, M.D.'s license?
NPPES lists Texas license number H9186, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Atlas, M.D. prescribe under Medicare Part D?
In 2024, William Atlas, M.D. had 4,813 Medicare Part D claims for 216 beneficiaries; the average among internal medicine physician prescribers was 2,785. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.