Marcy R. Wiemers, M.D.
Family Medicine Physician · San Antonio, TX
Marcy R. Wiemers, M.D. is a family medicine physician with a practice address in San Antonio, Texas, and NPI 1245453307, issued on Apr 10, 2007. Check the license (Texas M0308, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Marcy R. Wiemers
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- M0308 TX
Self-reported in NPPES; status is on the state search - Practice location
- 1831 S General Mcmullen Dr, San Antonio, TX 78226
- Phone
- (210) 644-8500
- Enumerated
- Apr 10, 2007
- Record last updated
- Feb 5, 2025
- Fax
- (210) 644-8526
- Medicaid ID
- 188670703 TX
- Medicare enrollment
- Enrolled (PECOS I20071025000356); accepts Medicare assignment
- Medical or professional school
- Texas A & M University System, Hsc, College Of Medicine, 2003
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 11,119 in Texas → Look up another NPI →
Also registered at 1831 S General Mcmullen Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Fozia Ali, M.D.Family Medicine Physician1225295975
- Oscar Cardona-Sausedo, NPFamily Nurse Practitioner1407790439
- Roberto Corral, PAMedical Physician Assistant1528065224
- Cathy Davis, FNP-CFamily Nurse Practitioner1144652314
- Marissa Emadi, MDFamily Medicine Physician1912469081
- Marcus Quint, D.O.Pediatrics Physician1417691452
Verify Marcy R. Wiemers in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license M0308Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
68% fewer Medicare Part D claims than the average family medicine physician in 2024
1,144 Medicare Part D claims for 142 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims. 27 claims were for opioids.
Most prescribed
- Atorvastatin Calcium69 claims
- Lisinopril39 claims
- Trulicity37 claims
- Ozempic34 claims
- Fluticasone Propionate33 claims
- Pregabalin31 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.
Bills Medicare through 2 group practices
- Community Medicine AssociatesSan Antonio, TX
- University OF Texas Health Science Center AT San AntonioSan Antonio, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marcy R. Wiemers among 11,119 family medicine physician records in Texas
Marcy R. Wiemers, M.D. is one of 11,119 family 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 2007, is newer than 46% of them.
- NPI issued2007 · 46% of these records are older, 45% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2003 · median 2004 among the 7,095 with a school on file
- Record last updated2025 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
809 family medicine physician records list a practice address in San Antonio
They are 809 of the 37,749 NPPES records with a practice address in San Antonio, and 11,119 family medicine physician records in Texas.
All 11,119 in Texas → Every provider in San Antonio → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Fozia Ali, M.D.San Antonio, TX 782261225295975
- Marissa Emadi, MDSan Antonio, TX 782261912469081
- Linzi Jones, FNP-BCSan Antonio, TX 782271669249678
- Daniel Kellum, DOSan Antonio, TX 782271174518625
- Frank Marcano Obregon, MDSan Antonio, TX 782271750744470
- Raul Martinez, MDSan Antonio, TX 782251508073073
- David Ramos, MDSan Antonio, TX 782251003091976
- Hormazd Sanjana, MDSan Antonio, TX 782271093706293
Common questions
What is Marcy R. Wiemers, M.D.'s NPI number?
Marcy R. Wiemers, M.D.'s National Provider Identifier (NPI) is 1245453307, issued on Apr 10, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Marcy R. Wiemers, M.D. located?
The NPPES record lists a practice address at 1831 S General Mcmullen Dr, San Antonio, TX, 78226. Phone: (210) 644-8500. Providers update this record themselves, so call before visiting.
How can I verify Marcy R. Wiemers, M.D.'s license?
NPPES lists Texas license number M0308, 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 Marcy R. Wiemers, M.D. prescribe under Medicare Part D?
In 2024, Marcy R. Wiemers, M.D. had 1,144 Medicare Part D claims for 142 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.