John Howell Hamilton, M. D.
General Practice Physician · San Antonio, TX
John Howell Hamilton, M. D. is a general practice physician with a practice address in San Antonio, Texas, and NPI 1487034831, issued on Jun 1, 2015. Check the license (Texas R4233, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- John Howell Hamilton
- Credential
- M. D.
- Primary taxonomy
- General Practice Physician 208D00000X
- License numbers
- R4233 TX
ME165198 FL
Self-reported in NPPES; status is on the state search - Practice location
- 111 Dallas St, San Antonio, TX 78205
- Phone
- (210) 297-7000
- Enumerated
- Jun 1, 2015
- Record last updated
- Nov 27, 2024
- Medicare enrollment
- Enrolled (PECOS I20180117001815); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest general practice physician records → All 1,062 in Texas → Look up another NPI →
Also registered at 111 Dallas St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Elston BennettGerontology Nurse Practitioner1922866466
Verify John Howell Hamilton in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license R4233Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average general practice physician in 2024
244 Medicare Part D claims for 177 beneficiaries, against an average of 3,030 among the 8,395 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Meloxicam69 claims
- Ondansetron Odt23 claims
- Nitrofurantoin Mono-Macro19 claims
- Clindamycin Hcl15 claims
- Prednisone12 claims
- Albuterol Sulfate Hfa11 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
- Comal Emergency Physicians PLLCNew Braunfels, TX
- Sound Physicians Emergency Medicine OF Texas PLLCFredericksburg, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Howell Hamilton among 1,062 general practice physician records in Texas
John Howell Hamilton, M. D. is one of 1,062 general practice physician records with a practice address in Texas. 44% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 54% of them.
- NPI issued2015 · 54% of these records are older, 44% newer
- In a Medicare fileYes · 44% of these records are
- In the CMS Doctors and Clinicians fileYes · 21% of these records are
- Graduated2015 · median 2000 among the 222 with a school on file
- Record last updated2024 · 41% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208D00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
General Practice Physician providers in Texas
There are 1,062 general practice physician records in Texas.
All 1,062 in Texas → Every provider in San Antonio → General Practice Physician nationwide →
The 8 general practice physician records with the nearest ZIP codes
- Armando Quinones, MDSan Antonio, TX 782051053306779
- Todd Smolinsky, MDSan Antonio, TX 782041992333199
- Michael Garcia, M.D.San Antonio, TX 782071992729875
- Paul Sundberg, MDSan Antonio, TX 782071346669124
- Thomas Wascher, M.D.San Antonio, TX 782071609872969
- John Baeke, M.D.San Antonio, TX 782091831192525
- Faraz Yousefian, DOSan Antonio, TX 782091508432204
- Aysun Alagoz, M.D.San Antonio, TX 782111750492690
Common questions
What is John Howell Hamilton, M. D.'s NPI number?
John Howell Hamilton, M. D.'s National Provider Identifier (NPI) is 1487034831, issued on Jun 1, 2015. An NPI identifies a provider in billing; it is not a license.
Where is John Howell Hamilton, M. D. located?
The NPPES record lists a practice address at 111 Dallas St, San Antonio, TX, 78205. Phone: (210) 297-7000. Providers update this record themselves, so call before visiting.
How can I verify John Howell Hamilton, M. D.'s license?
NPPES lists Texas license number R4233, 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 Howell Hamilton, M. D. prescribe under Medicare Part D?
In 2024, John Howell Hamilton, M. D. had 244 Medicare Part D claims for 177 beneficiaries; the average among general practice physician prescribers was 3,030. 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.