Doctor profile · Federal record
Dr. Gaspar Nazareno, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Modesto, CA
- NPI 1326096603
- Accepts Medicare
- 33 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1409 E Briggsmore Ave
Modesto, CA 953552707
(209) 550-4750 - Mailing address
-
600 Coffee RD
Modesto, CA 953554201
Credentials & registration
- NPI registered
- May 2006 — 20 yrs on file
- Profile last updated
- November 9, 2010
- Year of graduation
- 1993 — 33 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- California #A68335
- Medicaid
- CA #00A683350
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1326096603. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,628
Distinct HCPCS
10
Medicare allowed
$210,516
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 311 | 310 | $246 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 298 | 287 | $76 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 209 | 208 | $82 | |
G0500 |
Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito | 190 | 188 | $5 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 101 | 87 | $131 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 93 | 79 | $185 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 93 | 90 | $176 | |
43248 |
Insertion of guide wire with dilation of esophagus using a flexible endoscope | 59 | 58 | $145 | |
45381 |
Injection beneath lining of large bowel using a flexible endoscope | 46 | 46 | $16 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 37 | 37 | $180 |
In context: peer comparison
Among 4 peers in this city , average services per provider: 61. This provider delivers 27× the peer median.Open Payments
Industry payments received
All-time total
$536
Transactions
15
Manufacturers
7
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| ABBVIE INC. | 6 | $180.38 | |
| Takeda Pharmaceuticals U.S.A., Inc. | 3 | $131.93 | |
| Madrigal Pharmaceuticals | 1 | $94.51 | |
| Boston Scientific Corporation | 1 | $50.44 | |
| Gilead Sciences, Inc. | 2 | $43.55 | |
| Lilly USA, LLC | 1 | $21.58 | |
| Janssen Biotech, Inc. | 1 | $13.64 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
798
Patients
242
Total drug cost
$944,641
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 164 | 64 | $3,239 |
| Pantoprazole Sodium | Generic | 88 | 27 | $2,076 |
| Mesalamine | Generic | 74 | 13 | $58,906 |
| Spironolactone | Generic | 57 | 13 | $1,513 |
| Furosemide | Generic | 51 | 12 | $313 |
| Ondansetron Odt (Ondansetron) | Brand | 50 | 28 | $1,138 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,mag Sulfates) | Brand | 50 | 49 | $3,731 |
| Famotidine | Generic | 45 | 22 | $1,520 |
| Prochlorperazine Maleate | Generic | 38 | 0 | $431 |
| Diphenoxylate-Atropine (Diphenoxylate Hcl/Atropine) | Brand | 35 | 0 | $1,214 |
Hospital affiliations
Frequently asked questions
What is Dr. Gaspar Nazareno's medical specialty?
Dr. Gaspar Nazareno practices Gastroenterology Physician in Modesto, CA.
Where does Dr. Gaspar Nazareno practice?
Dr. Gaspar Nazareno practices at 1409 E Briggsmore Ave, Modesto, CA 953552707. Office phone: 2095504750.
What is Dr. Gaspar Nazareno's NPI?
Dr. Gaspar Nazareno's National Provider Identifier (NPI) is 1326096603, issued by NPPES.
Does Dr. Gaspar Nazareno accept Medicare assignment?
Yes. Dr. Gaspar Nazareno accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Gaspar Nazareno commonly perform?
Top Medicare-reported procedures in 2023: Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239); Biopsy of large bowel using a flexible endoscope (HCPCS 45380). Source: CMS Medicare Physician & Other Practitioners file.