Muhammad Zubair Ashfaq, M.D.
Internal Medicine Physician · San Antonio, TX
Muhammad Zubair Ashfaq, M.D. is an internal medicine physician with a practice address in San Antonio, Texas, and NPI 1811331341, issued on Apr 26, 2013. Check the license (Texas Q8012, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Muhammad Zubair Ashfaq
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- Q8012 TX
MD-44789 IA
Self-reported in NPPES; status is on the state search - Practice location
- 4502 Medical Dr, San Antonio, TX 78229
- Phone
- (210) 567-1767
- Enumerated
- Apr 26, 2013
- Record last updated
- Apr 7, 2025
- Medicare enrollment
- Enrolled (PECOS I20160817003237); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Also registered at 4502 Medical Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Muhammad Zubair Ashfaq in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license Q8012Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average internal medicine physician in 2024
147 Medicare Part D claims for 31 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 41% of claims.
Most prescribed
- Furosemide24 claims
- Procrit23 claims
- Farxiga22 claims
- Losartan Potassium16 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.
Industry payments in 2024: $56.50
3 payments; by number, the most common kind was food and beverage; the largest payer was Regeneron Healthcare Solutions, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Questcare Hospitalists PLLCDallas, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Muhammad Zubair Ashfaq among 9,175 internal medicine physician records in Texas
Muhammad Zubair Ashfaq, 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 2013, is newer than 66% of them.
- NPI issued2013 · 66% of these records are older, 31% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2010 · median 2004 among the 6,088 with a school on file
- Record last updated2025 · 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
- Jeremias Abueme, M.D.San Antonio, TX 782291891790960
- Richard Clemons, MDSan Antonio, TX 782291740282664
- Serina Flores, M.D.San Antonio, TX 782291528058203
- John Galan, MDSan Antonio, TX 782291528069440
- Juan Gonzalez, MDSan Antonio, TX 782291659370963
- Bradley Kayser, MDSan Antonio, TX 782291285635110
- Michelle Medellin, M.D.San Antonio, TX 782291770571614
- Thomas Mieras, MDSan Antonio, TX 782291578564787
Common questions
What is Muhammad Zubair Ashfaq, M.D.'s NPI number?
Muhammad Zubair Ashfaq, M.D.'s National Provider Identifier (NPI) is 1811331341, issued on Apr 26, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Muhammad Zubair Ashfaq, M.D. located?
The NPPES record lists a practice address at 4502 Medical Dr, San Antonio, TX, 78229. Phone: (210) 567-1767. Providers update this record themselves, so call before visiting.
How can I verify Muhammad Zubair Ashfaq, M.D.'s license?
NPPES lists Texas license number Q8012, 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 Muhammad Zubair Ashfaq, M.D. prescribe under Medicare Part D?
In 2024, Muhammad Zubair Ashfaq, M.D. had 147 Medicare Part D claims for 31 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.