Internal Medicine, Gastroenterology · San Antonio, TX
NPI
1558366435
Since 2005
Specialty
Internal Medicine, Gastroenterology
Code 207RG0100X
Group practices
1
Medicare group memberships
Hospitals
2
Hospital affiliations
520 E Euclid Ave
San Antonio, TX, 78212
Phone (210) 271-0606
Groups this clinician bills Medicare through
Medicare paid, 2024
$279K
10,702 services
Medicare patients, 2024
698
Average age 73
Drug cost, 2024
$1.1M
5,117 prescriptions
Company payments, 2025
$1,682
From 17 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Ernesto Guerra Jr. was code 99214 (office e&m - established), 269 times for 214 patients. In total Ernesto Guerra Jr. billed 10,702 services in 27 codes, and Medicare paid $279K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2017-01-31.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 99214 Office E&M - Established | Office | 269 | 214 | $78.92 | $21K |
| 43239 Upper GI Endoscopy | Facility | 220 | 217 | $69.31 | $15K |
| G0105 Colorectal cancer screening; colonoscopy on individual at high risk | Facility | 127 | 127 | $170.90 | $22K |
| 99213 Office E&M - Established | Office | 92 | 83 | $54.73 | $5,035 |
| 45380 Lower GI Endoscopy - Other | Facility | 90 | 90 | $127.33 | $11K |
| 45385 Colonoscopy - Lesion Removal | Facility | 57 | 57 | $195.45 | $11K |
| 43249 Upper GI Endoscopy | Facility | 47 | 46 | $99.65 | $4,683 |
| G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | Facility | 46 | 46 | $172.47 | $7,934 |
| 45378 Lower GI Endoscopy - Other | Facility | 43 | 43 | $135.53 | $5,828 |
| 99204 Office E&M - New | Office | 33 | 33 | $107.36 | $3,543 |
| 99203 Office E&M - New | Office | 11 | 11 | $76.47 | $841 |
By year: 2022 $153K for 2,164 services; 2023 $212K for 6,934 services; 2024 $279K for 10,702 services.
Medicare prescription drug claims, 2024
In 2024, the drug Ernesto Guerra Jr. prescribed most often to Medicare patients was Pantoprazole Sodium, with 1,168 prescriptions and refills. In total Ernesto Guerra Jr. wrote 5,117 Medicare prescriptions that cost $1.1M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Pantoprazole Sodium Generic | 1,168 | 2,463 | 403 | $9,204 |
| Famotidine Generic | 976 | 2,057 | 325 | $15K |
| Peg-3350 And Electrolytes Peg3350/Sod Sulf,bicarb,cl/Kcl | 542 | 549 | 528 | $9,122 |
| Omeprazole Generic | 382 | 855 | 145 | $6,409 |
| Gavilyte-G Peg3350/Sod Sulf,bicarb,cl/Kcl | 328 | 328 | 324 | $5,119 |
| Linzess Linaclotide | 184 | 246 | 56 | $130K |
| Peg 3350-Electrolyte Sodium Chloride/Nahco3/Kcl/Peg | 183 | 185 | 181 | $3,980 |
| Mesalamine Generic | 97 | 187 | 24 | $44K |
| Esomeprazole Magnesium Generic | 94 | 163 | 29 | $3,340 |
| Plenvu Peg3350/Sod Sul/Nacl/Kcl/Asb/C | 78 | 78 | 77 | $11K |
| Sucralfate Generic | 76 | 79 | 30 | $3,921 |
| Ursodiol Generic | 72 | 156 | 17 | $12K |
| Clenpiq Sod Picosulf/Mag Ox/Citric Ac | 64 | 64 | 62 | $11K |
| Dicyclomine Hcl Generic | 59 | 83 | 27 | $657 |
| Sutab Sod Sulf/Pot Chloride/Mag Sulf | 59 | 59 | 58 | $9,637 |
Brand drugs: 1,261 claims; generic drugs: 3,856 claims.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Ernesto Guerra Jr. $1,682 ($1,682 in general payments such as food, travel and fees) from 17 companies. The largest payer was Janssen Biotech, Inc. with $436.
| Company | Payments | Amount |
|---|---|---|
| Janssen Biotech, Inc. JNJ | 23 | $436 |
| Abbvie Inc. ABBV | 25 | $410 |
| Olympus America Inc. | 1 | $111 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC BHC | 6 | $110 |
| Echosens North America, Inc. | 1 | $108 |
| Lilly USA, LLC LLY | 5 | $96.64 |
| Gilead Sciences, Inc. GILD | 4 | $83.7 |
| Ardelyx, Inc. ARDX | 3 | $67.18 |
| Takeda Pharmaceuticals U.S.A., Inc. TAK | 3 | $62.79 |
| Aimmune Therapeutics, Inc. | 3 | $47.86 |
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.