John David Hierholzer, M.D.
Family Medicine Physician · San Antonio, TX
John David Hierholzer, M.D. is a family medicine physician with a practice address in San Antonio, Texas, and NPI 1215912118, issued on Dec 13, 2005. Check the license (Texas L9732, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- John David Hierholzer
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- L9732 TX
Self-reported in NPPES; status is on the state search - Practice location
- 12000 Huebner RD, San Antonio, TX 78230
- Phone
- (210) 561-2422
- Enumerated
- Dec 13, 2005
- Record last updated
- Jun 8, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (210) 561-2466
- Medicaid ID
- 1737520-01 TX
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 11,119 in Texas → Look up another NPI →
Also registered at 12000 Huebner RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ehab AbdelazizFamily Medicine Physician1740972124
- Mitchell Finnie, MDFamily Medicine Physician1245236231
Verify John David Hierholzer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license L9732Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average family medicine physician in 2024
133 Medicare Part D claims for 36 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium12 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.
John David Hierholzer among 11,119 family medicine physician records in Texas
John David Hierholzer, 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 88% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2015 · 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
- Maria Elena Cantu, M.D.San Antonio, TX 782301225236888
- Deborah Cardell, M.D.San Antonio, TX 782301932123262
- Louis Esquivel, MDSan Antonio, TX 782301760472682
- Mitchell Finnie, MDSan Antonio, TX 782301245236231
- Alejandro Garcia, MDSan Antonio, TX 782301346217643
- Juan Garza, MDSan Antonio, TX 782301669449971
- Simon GarzaSan Antonio, TX 782301447414081
- Mariel Lozano, MDSan Antonio, TX 782301386107464
Common questions
What is John David Hierholzer, M.D.'s NPI number?
John David Hierholzer, M.D.'s National Provider Identifier (NPI) is 1215912118, issued on Dec 13, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John David Hierholzer, M.D. located?
The NPPES record lists a practice address at 12000 Huebner RD, San Antonio, TX, 78230. Phone: (210) 561-2422. Providers update this record themselves, so call before visiting.
How can I verify John David Hierholzer, M.D.'s license?
NPPES lists Texas license number L9732, 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 John David Hierholzer, M.D. prescribe under Medicare Part D?
In 2024, John David Hierholzer, M.D. had 133 Medicare Part D claims for 36 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.