Gaspar Nazareno, M.D.
NPI 1326096603 · Gastroenterology Physician · Modesto, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gaspar Nazareno, M.D. is a Gastroenterology Physician provider in Modesto, CA (NPI 1326096603).
Provider details
- NPI number
- 1326096603
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A68335 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,664 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 308 | $76 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 286 | $231 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 224 | $77 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 128 | $125 |
| 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 MonitoG0500 | 128 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 39 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 131 | 64 |
| Pantoprazole Sodium | 76 | 32 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 76 | 74 |
| Buspirone Hcl | 55 | 12 |
| Mesalamine | 54 | 12 |
| Famotidine | 51 | 19 |
| Sucralfate | 43 | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$536 across 15 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-05
- Last updated
- 2010-11-09
Frequently asked questions
- What is Gaspar Nazareno's NPI number?
- Gaspar Nazareno's National Provider Identifier (NPI) is 1326096603, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gaspar Nazareno's specialty?
- Gaspar Nazareno is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Gaspar Nazareno located?
- Gaspar Nazareno's practice location on file with NPPES is 1409 E Briggsmore Ave, Modesto, CA 95355-2707.
- What is Gaspar Nazareno's phone number?
- The practice phone number listed in the NPPES registry for Gaspar Nazareno is (209) 550-4750.
- Does Gaspar Nazareno accept Medicare?
- Gaspar Nazareno is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gaspar Nazareno's NPI active?
- Yes — Gaspar Nazareno's NPI (1326096603) is active in the NPPES registry as of the last update on 2010-11-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.