Jeffrey Peter Fiorenza, M.D.
Gastroenterology Physician · Monterey, CA
Jeffrey Peter Fiorenza, M.D. is a gastroenterology physician with a practice address in Monterey, California, and NPI 1851577605, issued on Jan 10, 2008. Check the license (California A140177, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jeffrey Peter Fiorenza
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License numbers
- A140177 CA
247495 MA
Self-reported in NPPES; status is on the state search - Practice location
- 23 Upper Ragsdale Drive, Monterey, CA 93940
- Phone
- (831) 375-3577
- Enumerated
- Jan 10, 2008
- Record last updated
- Dec 18, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (831) 375-1478
- Medicare enrollment
- Enrolled (PECOS I20160811001712); accepts Medicare assignment
- Medical or professional school
- Johns Hopkins University School Of Medicine, 2009
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Verify Jeffrey Peter Fiorenza in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A140177Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% more Medicare Part D claims than the average gastroenterology physician in 2024
1,103 Medicare Part D claims for 419 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Pantoprazole Sodium251 claims
- Omeprazole219 claims
- Famotidine95 claims
- Gavilyte-G80 claims
- Sod Sulf-Potass Sulf-Mag Sulf44 claims
- Peg-3350 And Electrolytes43 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 83.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $182.23
9 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Monterey Bay GI Consultants Medical Group IncMonterey, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
Other gastroenterology physician records in California
- David Aarons, MDLodi, CA1619081379
- Constante Abaya, MDOxnard, CA1003918459
- Sadeea Abbasi, M.D., PH.D.Los Angeles, CA1366713513
- Basim Abdelkarim, MDUpland, CA1932217544
- Homan Abdollahzadeh, MDPalm Springs, CA1184634826
- John Abdulian, M.D.Fresno, CA1437114113
- Hussein Abidali, DORancho Cucamonga, CA1205274768
- Alaa Abousaif, MDOrange, CA1235124108
- Donald Abrahm, M.D.Newport Beach, CA1215022405
- Maria Abreu, M.D.West Hollywood, CA1598793374
Common questions
What is Jeffrey Peter Fiorenza, M.D.'s NPI number?
Jeffrey Peter Fiorenza, M.D.'s National Provider Identifier (NPI) is 1851577605, issued on Jan 10, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Jeffrey Peter Fiorenza, M.D. located?
The NPPES record lists a practice address at 23 Upper Ragsdale Drive, Monterey, CA, 93940. Phone: (831) 375-3577. Providers update this record themselves, so call before visiting.
How can I verify Jeffrey Peter Fiorenza, M.D.'s license?
NPPES lists California license number A140177, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jeffrey Peter Fiorenza, M.D. prescribe under Medicare Part D?
In 2024, Jeffrey Peter Fiorenza, M.D. had 1,103 Medicare Part D claims for 419 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Jeffrey Peter Fiorenza, M.D.'s MIPS final score?
The 2023 MIPS final score is 83.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.