Michael Herzik, M.D.
NPI 1801207873 · Internal Medicine Physician · San Antonio, TX
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Herzik, M.D. is a Internal Medicine Physician provider in San Antonio, TX (NPI 1801207873).
Provider details
- NPI number
- 1801207873
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- T-2807 (MS)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
12 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,237 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 594 | $112 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 402 | $74 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 162 | $108 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 79 | $165 |
Typical Medicare-allowed amounts for these services range $74–$165 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 37 | 18 |
| Cefdinir | 24 | 24 |
| Metoprolol Tartrate | 20 | 11 |
| Nifedipinebrand: Nifedipine Er | 20 | — |
| Pantoprazole Sodium | 20 | 15 |
| Losartan Potassium | 19 | — |
| Furosemide | 18 |
Practice location
Mailing address
Additional practice locations (1)
- 8026 Floyd Curl DrSan Antonio, TX 78229-3915Phone: (210) 562-0037
Registry dates
- Enumerated
- 2014-05-13
- Last updated
- 2019-02-25
Frequently asked questions
- What is Michael Herzik's NPI number?
- Michael Herzik's National Provider Identifier (NPI) is 1801207873, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Herzik's specialty?
- Michael Herzik is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Herzik located?
- Michael Herzik's practice location on file with NPPES is 12446 West Ave Ste 200, San Antonio, TX 78216-2530.
- What is Michael Herzik's phone number?
- The practice phone number listed in the NPPES registry for Michael Herzik is (210) 525-1668.
- Does Michael Herzik accept Medicare?
- Michael Herzik is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Herzik's NPI active?
- Yes — Michael Herzik's NPI (1801207873) is active in the NPPES registry as of the last update on 2019-02-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.