Antonio Serna, MD
NPI 1538208541 · Gastroenterology Physician · San Antonio, TX
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Antonio Serna, MD is a Gastroenterology Physician provider in San Antonio, TX (NPI 1538208541).
Provider details
- NPI number
- 1538208541
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- M8985 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,964 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 35 Minutes99232 | 555 | $75 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 518 | $123 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 203 | $106 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 91 | $154 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 90 | $121 |
| Insertion of Stomach Tube Using a Flexible Endoscope |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 33 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 323 | 301 |
| Pantoprazole Sodium | 259 | 101 |
| Linaclotidebrand: Linzess | 197 | 51 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 164 | 157 |
| Omeprazole | 130 | 46 |
| Famotidine | 123 | 46 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$571 across 39 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-02-06
- Last updated
- 2008-07-15
Frequently asked questions
- What is Antonio Serna's NPI number?
- Antonio Serna's National Provider Identifier (NPI) is 1538208541, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Antonio Serna's specialty?
- Antonio Serna is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Antonio Serna located?
- Antonio Serna's practice location on file with NPPES is 520 E Euclid Ave, San Antonio, TX 78212-4414.
- What is Antonio Serna's phone number?
- The practice phone number listed in the NPPES registry for Antonio Serna is (210) 271-0606.
- Does Antonio Serna accept Medicare?
- Antonio Serna is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Antonio Serna's NPI active?
- Yes — Antonio Serna's NPI (1538208541) is active in the NPPES registry as of the last update on 2008-07-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.