William Andrew Atlas, M.D.
Internal Medicine Physician · San Antonio, TX
William Andrew 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 Andrew 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
- Record last updated
- Jan 6, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (210) 404-9223
- Medicaid IDs
- 105549308 TX
105549304 TX - Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
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 Andrew 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
52% 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 3,176 among the 108,855 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.
William Andrew Atlas among 9,175 internal medicine physician records in Texas
William Andrew Atlas, M.D. is one of 9,175 internal medicine physician records with a practice address in Texas. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 91% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2016 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
657 internal medicine physician records list a practice address in San Antonio
They are 657 of the 37,749 NPPES records with a practice address in San Antonio, and 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Every provider in San Antonio → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Vernon Benson, M.D.San Antonio, TX 782581487638011
- David Bird, M.D.San Antonio, TX 782581346468246
- John Dickson, M.D.San Antonio, TX 782581154467116
- George Ford III, M.D.F.A.C.P.San Antonio, TX 782581841275443
- Timothy Hernandez, MDSan Antonio, TX 782581851495584
- Kevin Horton, M.D.San Antonio, TX 782581710962972
- Yolanda Marcos, MDSan Antonio, TX 782581104845445
- Scott McGlynn, D.O.San Antonio, TX 782581770579187
Common questions
What is William Andrew Atlas, M.D.'s NPI number?
William Andrew 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 Andrew 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 Andrew 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 Andrew Atlas, M.D. prescribe under Medicare Part D?
In 2024, William Andrew Atlas, M.D. had 4,813 Medicare Part D claims for 216 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 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.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.