Michael Anthony Herzik, M.D.
Internal Medicine Physician · San Antonio, TX
Michael Anthony Herzik, M.D. is an internal medicine physician with a practice address in San Antonio, Texas, and NPI 1801207873, issued on May 13, 2014. Check the license (Texas R2619, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Michael Anthony Herzik
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- R2619 TX
T-2807 MS
Self-reported in NPPES; status is on the state search - Practice location
- 12446 West Ave Ste 200, San Antonio, TX 78216
- Phone
- (210) 525-1668
- Enumerated
- May 13, 2014
- Record last updated
- Feb 25, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicaid ID
- 377321003 TX
- Medicare enrollment
- Enrolled (PECOS I20171027001174); 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 12446 West Ave Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Michael Anthony Herzik in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license R2619Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average internal medicine physician in 2024
577 Medicare Part D claims for 204 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims. 41 claims were for opioids.
Most prescribed
- Eliquis37 claims
- Cefdinir24 claims
- Metoprolol Tartrate20 claims
- Nifedipine Er20 claims
- Pantoprazole Sodium20 claims
- Losartan Potassium19 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
- Complete Care Medical AssociatesSan Antonio, TX
- Hospital Medicine Services OF TX, PLLCSan Antonio, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Anthony Herzik among 9,175 internal medicine physician records in Texas
Michael Anthony Herzik, 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 2014, is newer than 69% of them.
- NPI issued2014 · 69% of these records are older, 29% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2014 · median 2004 among the 6,088 with a school on file
- Record last updated2019 · 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
- Leslee Ball-Scovel, MDSan Antonio, TX 782161790759371
- Reid Hartson, MDSan Antonio, TX 782161063528263
- Roseann Miller, MDSan Antonio, TX 782161285646141
- Dennis Murphree, MDSan Antonio, TX 782161174520894
- Kwame Obeng, M.D.San Antonio, TX 782161851320402
- Anthony Oliva, MDSan Antonio, TX 782161467569822
- Lino Ramos, MDSan Antonio, TX 782161851332415
- Shankar Sanka, M.D.San Antonio, TX 782161851395495
Common questions
What is Michael Anthony Herzik, M.D.'s NPI number?
Michael Anthony Herzik, M.D.'s National Provider Identifier (NPI) is 1801207873, issued on May 13, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Michael Anthony Herzik, M.D. located?
The NPPES record lists a practice address at 12446 West Ave Ste 200, San Antonio, TX, 78216. Phone: (210) 525-1668. Providers update this record themselves, so call before visiting.
How can I verify Michael Anthony Herzik, M.D.'s license?
NPPES lists Texas license number R2619, 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 Michael Anthony Herzik, M.D. prescribe under Medicare Part D?
In 2024, Michael Anthony Herzik, M.D. had 577 Medicare Part D claims for 204 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.