Doctor profile · Federal record
Dr. Ernesto Guerra, MD
Gastroenterology Physician (CMS: Gastroenterology) · San Antonio, TX
- NPI 1558366435
- Accepts Medicare
- MIPS 79.9 / 100 · 2023
- 50 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
520 E Euclid Ave
San Antonio, TX 782124414
(210) 271-0606
fax (210) 475-9806 - Mailing address
-
520 E. Euclid Ave.
San Antonio, TX 78212
Credentials & registration
- NPI registered
- June 2005 — 21 yrs on file
- Profile last updated
- January 31, 2017
- Year of graduation
- 1976 — 50 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Texas #E7416
- Medicaid
- TX #119176902
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1558366435. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,061
Distinct HCPCS
10
Medicare allowed
$138,966
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 326 | 250 | $120 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 179 | 175 | $86 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 109 | 109 | $173 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 107 | 107 | $164 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 106 | 96 | $84 | |
G0121 |
Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | 62 | 62 | $174 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 41 | 41 | $240 | |
43249 |
Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm | 38 | 37 | $129 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 37 | 37 | $160 | |
45378 |
Diagnostic exam of large bowel using a flexible endoscope | 29 | 29 | $164 |
In context: peer comparison
Among 38 peers in San Antonio Gastroenterology Physician, average services per provider: 78. This provider delivers 14× the peer median.Open Payments
Industry payments received
All-time total
$1,542
Transactions
91
Manufacturers
12
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 38 | $476.12 | |
| Janssen Biotech, INC. | 21 | $322.11 | |
| Gilead Sciences, INC. | 7 | $163.92 | |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | 9 | $163.71 | |
| Olympus America INC. | 1 | $140.78 | |
| Lilly USA, LLC | 4 | $71.66 | |
| Takeda Pharmaceuticals U.S.A., INC. | 3 | $63.33 | |
| Phathom Pharmaceuticals, INC. | 3 | $54.19 | |
| Ironwood Pharmaceuticals, INC | 2 | $41.15 | |
| Aimmune Therapeutics, INC. | 1 | $17.22 | |
| Qol Medical, LLC | 1 | $14.35 | |
| Ipsen Biopharmaceuticals, INC | 1 | $13.68 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
3,792
Patients
2,016
Total drug cost
$507,105
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 1,069 | 381 | $13,617 |
| Famotidine | Generic | 779 | 259 | $14,084 |
| Gavilyte-G (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 486 | 479 | $8,193 |
| Omeprazole | Generic | 328 | 138 | $4,857 |
| Linzess (Linaclotide) | Brand | 183 | 58 | $146,028 |
| Sutab (Sod Sulf/Pot Chloride/Mag Sulf) | Brand | 183 | 174 | $30,540 |
| Peg-3350 and Electrolytes (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 180 | 174 | $3,455 |
| Clenpiq (Sod Picosulf/Mag Ox/Citric Ac) | Brand | 121 | 120 | $20,578 |
| Plenvu (Peg3350/Sod Sul/Nacl/Kcl/Asb/C) | Brand | 100 | 98 | $14,592 |
| Mesalamine | Generic | 82 | 19 | $70,025 |
Frequently asked questions
What is Dr. Ernesto Guerra's medical specialty?
Dr. Ernesto Guerra practices Gastroenterology Physician in San Antonio, TX.
Where does Dr. Ernesto Guerra practice?
Dr. Ernesto Guerra practices at 520 E Euclid Ave, San Antonio, TX 782124414. Office phone: 2102710606.
What is Dr. Ernesto Guerra's NPI?
Dr. Ernesto Guerra's National Provider Identifier (NPI) is 1558366435, issued by NPPES.
Does Dr. Ernesto Guerra accept Medicare assignment?
Yes. Dr. Ernesto Guerra accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Ernesto Guerra commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239); Colorectal cancer screening; colonoscopy on individual at high risk (HCPCS G0105). Source: CMS Medicare Physician & Other Practitioners file.