Gregg Loren Wendorf, M.D.
Gastroenterology (CMS) · San Antonio, TX
At a glance
5223 Hamilton Wolfe Rd, San Antonio, TX 78229-4463
Published activity: Colonoscopy · Upper gastrointestinal (GI) endoscopy for acid reflux. View counts and coverage
NPPES record updated Jul 6, 2021. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
5223 Hamilton Wolfe RdSan Antonio, TX 78229-4463
Additional reported practice locations
1200 E Savannah Ave Ste 10Mcallen, TX 78503
Phone: 9563623636
Fax: 9563622699 5520 Leonardo Da Vinci Ste 100
Edinburg, TX 785391422
Phone: 9563623636
Fax: 9563622699
Education & affiliations
- Medical / professional school
- Not reported in this file
- Graduation year
- 2013
- CMS specialties
- Gastroenterology
CMS reports telehealth services for this clinician. Confirm current services and availability with the practice.
Practice groups
Reported hospital affiliations
- Methodist Hospital San Antonio, TX
- Methodist Hospital Stone Oak San Antonio, TX
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
| Procedure category | Published Medicare activity |
|---|---|
| Colonoscopy | 97 |
| Upper gastrointestinal (GI) endoscopy for acid reflux | 163 |
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Food and beverage | $2,565.03 |
Reporting companies
| Company | Amount |
|---|---|
| JANSSEN BIOTECH, INC. | $769.76 |
| ABBVIE INC. | $481.80 |
| TAKEDA PHARMACEUTICALS U.S.A., INC. | $188.93 |
| GILEAD SCIENCES, INC. | $174.69 |
| SALIX PHARMACEUTICALS, A DIVISION OF BAUSCH HEALTH US, LLC | $172.94 |
| ENTERRA MEDICAL, INC. | $140.79 |
| MADRIGAL PHARMACEUTICALS | $137.44 |
| IPSEN BIOPHARMACEUTICALS, INC | $88.35 |
| Other reporting companies | $410.33 |
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Gastroenterology (CMS)
- Taxonomy code
- 207RG0100X
- Enumeration date
- May 14, 2013
- Record updated
- Jul 6, 2021
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- M.D.
Reported taxonomies and licenses
207RG0100X · Primary
License reported: S1538 TX
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
5223 Hamilton Wolfe RdSan Antonio, TX 78229-4463
- Phone
- (210) 614-1234
- Fax
- (210) 614-0952
Mailing address
PO BOX 35629DALLAS, TX 752350629
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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