Gregg Wendorf, M.D.
NPI 1952747248 · Gastroenterology Physician · San Antonio, TX
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregg Wendorf, M.D. is a Gastroenterology Physician provider in San Antonio, TX (NPI 1952747248).
Provider details
- NPI number
- 1952747248
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- S1538 (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
13 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
726 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 253 | $120 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 89 | $99 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 80 | $234 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 71 | $159 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 50 | $83 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 55 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 350 | 117 |
| Promethazine Hcl | 306 | 32 |
| Ondansetron Hcl | 253 | 11 |
| Omeprazole | 222 | 69 |
| Bethanechol Chloride | 197 | 45 |
| Dicyclomine Hcl | 182 | 55 |
| Ringer'S Solution,lactatedbrand: Lactated Ringers | 178 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,929 across 109 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
Additional practice locations (2)
- 5520 Leonardo Da Vinci Ste 100Edinburg, TX 78539-1422Phone: (956) 362-3636Fax: (956) 362-2699
- 1200 E Savannah Ave Ste 10Mcallen, TX 78503Phone: (956) 362-3636Fax: (956) 362-2699
Registry dates
- Enumerated
- 2013-05-14
- Last updated
- 2021-07-06
- Certified
- 2021-07-06
Frequently asked questions
- What is Gregg Wendorf's NPI number?
- Gregg Wendorf's National Provider Identifier (NPI) is 1952747248, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregg Wendorf's specialty?
- Gregg Wendorf is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregg Wendorf located?
- Gregg Wendorf's practice location on file with NPPES is 5223 Hamilton Wolfe Rd, San Antonio, TX 78229-4463.
- What is Gregg Wendorf's phone number?
- The practice phone number listed in the NPPES registry for Gregg Wendorf is (210) 614-1234.
- Does Gregg Wendorf accept Medicare?
- Gregg Wendorf is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregg Wendorf's NPI active?
- Yes — Gregg Wendorf's NPI (1952747248) is active in the NPPES registry as of the last update on 2021-07-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.