Internal Medicine, Gastroenterology · San Antonio, TX
NPI
1952747248
Since 2013
Specialty
Internal Medicine, Gastroenterology
Code 207RG0100X
Group practices
1
Medicare group memberships
Hospitals
2
Hospital affiliations
5223 Hamilton Wolfe Rd
San Antonio, TX, 78229
Phone (210) 614-1234
Groups this clinician bills Medicare through
Medicare paid, 2024
$179K
6,201 services
Medicare patients, 2024
452
Average age 71
Drug cost, 2024
$1.1M
3,881 prescriptions
Company payments, 2025
$2,565
From 18 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Gregg L Wendorf was code 99214 (office e&m - established), 253 times for 194 patients. In total Gregg L Wendorf billed 6,201 services in 47 codes, and Medicare paid $179K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2021-07-06.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 99214 Office E&M - Established | Office | 253 | 194 | $82.95 | $21K |
| 43239 Upper GI Endoscopy | Facility | 89 | 85 | $79.19 | $7,048 |
| 45385 Colonoscopy - Lesion Removal | Facility | 80 | 79 | $194.91 | $16K |
| 99204 Office E&M - New | Office | 71 | 71 | $109.36 | $7,764 |
| 99213 Office E&M - Established | Office | 50 | 49 | $56.24 | $2,812 |
| 43235 Upper GI Endoscopy | Facility | 32 | 32 | $73.45 | $2,350 |
| 95982 Electrical Nerve Conductivity | Office | 32 | 16 | $39.18 | $1,254 |
| G0105 Colorectal cancer screening; colonoscopy on individual at high risk | Facility | 24 | 23 | $166.86 | $4,005 |
| 45380 Lower GI Endoscopy - Other | Facility | 23 | 23 | $73.60 | $1,693 |
| G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | Facility | 22 | 22 | $168.40 | $3,705 |
| 91010 Test - Miscellaneous | Office | 17 | 17 | $148.16 | $2,519 |
| 45378 Lower GI Endoscopy - Other | Facility | 17 | 16 | $133.72 | $2,273 |
| 99203 Office E&M - New | Office | 16 | 16 | $68.39 | $1,094 |
By year: 2022 $190K for 5,306 services; 2023 $108K for 1,529 services; 2024 $179K for 6,201 services.
Medicare prescription drug claims, 2024
In 2024, the drug Gregg L Wendorf prescribed most often to Medicare patients was Pantoprazole Sodium, with 350 prescriptions and refills. In total Gregg L Wendorf wrote 3,881 Medicare prescriptions that cost $1.1M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Pantoprazole Sodium Generic | 350 | 763 | 117 | $3,542 |
| Promethazine Hcl Generic | 306 | 306 | 32 | $20K |
| Ondansetron Hcl Generic | 253 | 261 | 11 | $5,663 |
| Omeprazole Generic | 222 | 478 | 69 | $2,680 |
| Bethanechol Chloride Generic | 197 | 296 | 45 | $7,159 |
| Dicyclomine Hcl Generic | 182 | 235 | 55 | $3,411 |
| Lactated Ringers Ringer's Solution,lactated | 178 | 178 | Under 11 | $3,779 |
| Famotidine Generic | 152 | 335 | 44 | $4,929 |
| Ondansetron Odt Ondansetron | 133 | 147 | 62 | $5,820 |
| Metoclopramide Hcl Generic | 126 | 157 | 27 | $1,191 |
| Esomeprazole Magnesium Generic | 116 | 183 | 28 | $5,849 |
| Sucralfate Generic | 109 | 139 | 29 | $4,368 |
| Peg-3350 And Electrolytes Peg3350/Sod Sulf,bicarb,cl/Kcl | 83 | 83 | 80 | $1,417 |
| Plenvu Peg3350/Sod Sul/Nacl/Kcl/Asb/C | 75 | 75 | 73 | $10K |
| Linzess Linaclotide | 71 | 130 | 20 | $67K |
Brand drugs: 934 claims; generic drugs: 2,947 claims.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Gregg L Wendorf $2,565 ($2,565 in general payments such as food, travel and fees) from 18 companies. The largest payer was Janssen Biotech, Inc. with $770.
| Company | Payments | Amount |
|---|---|---|
| Janssen Biotech, Inc. JNJ | 73 | $770 |
| Abbvie Inc. ABBV | 42 | $482 |
| Takeda Pharmaceuticals U.S.A., Inc. TAK | 9 | $189 |
| Gilead Sciences, Inc. GILD | 11 | $175 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC BHC | 11 | $173 |
| Enterra Medical, Inc. | 1 | $141 |
| Madrigal Pharmaceuticals MDGL | 8 | $137 |
| Ipsen Biopharmaceuticals, Inc IPN.PA | 5 | $88.35 |
| Phathom Pharmaceuticals, Inc. PHAT | 8 | $83.72 |
| Lilly USA, LLC LLY | 5 | $79.65 |
Official US government data on Original Medicare services, Medicare prescription drug plans and the payments drug and device companies must report. Services with fewer than 11 patients and drugs with fewer than 11 claims are not published. Procedure codes are shown by number with their public category.