Jeffrey Fiorenza, M.D.
NPI 1851577605 · Gastroenterology Physician · Monterey, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jeffrey Fiorenza, M.D. is a Gastroenterology Physician provider in Monterey, CA (NPI 1851577605).
Provider details
- NPI number
- 1851577605
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 247495 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,477 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) |
|---|---|---|
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 208 | $241 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 175 | $133 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 145 | $175 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 138 | $96 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 128 | $82 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 251 | 95 |
| Omeprazole | 219 | 78 |
| Famotidine | 95 | 26 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 80 | 78 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 44 | 43 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 43 | 43 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$182 across 9 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
Additional practice locations (1)
- 850 5th StGonzales, CA 93926-9491Phone: (831) 657-3601
Registry dates
- Enumerated
- 2008-01-10
- Last updated
- 2020-12-18
- Certified
- 2020-12-18
Frequently asked questions
- What is Jeffrey Fiorenza's NPI number?
- Jeffrey Fiorenza's National Provider Identifier (NPI) is 1851577605, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jeffrey Fiorenza's specialty?
- Jeffrey Fiorenza is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Jeffrey Fiorenza located?
- Jeffrey Fiorenza's practice location on file with NPPES is 23 Upper Ragsdale Drive, Monterey, CA 93940-7849.
- What is Jeffrey Fiorenza's phone number?
- The practice phone number listed in the NPPES registry for Jeffrey Fiorenza is (831) 375-3577.
- Does Jeffrey Fiorenza accept Medicare?
- Jeffrey Fiorenza is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jeffrey Fiorenza's NPI active?
- Yes — Jeffrey Fiorenza's NPI (1851577605) is active in the NPPES registry as of the last update on 2020-12-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.