Peter M. Rosenberg, M.D.
Gastroenterology Physician · Pasadena, CA
Peter M. Rosenberg, M.D. is a gastroenterology physician with a practice address in Pasadena, California, and NPI 1104890664, issued on Feb 13, 2006. Check the license (California G85196, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Peter M. Rosenberg
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- G85196 CA
Self-reported in NPPES; status is on the state search - Practice location
- 50 Alessandro PL, Pasadena, CA 91105
- Phone
- (626) 793-7114
- Enumerated
- Feb 13, 2006
- Record last updated
- Nov 30, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (818) 889-0408
- Medicare enrollment
- Enrolled (PECOS I20031205000363); accepts Medicare assignment
- Medical or professional school
- Harvard Medical School, 1993
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 50 Alessandro PL
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ihab Beblawi, M.D.Gastroenterology Physician1942272075
- David Bryan, M.D.Diagnostic Radiology Physician1336138791
- Andrew Cotham, PTPhysical Therapist1023368891
- Kalman Edelman, M.D.Gastroenterology Physician1164494811
- Muhammad Iqbal, M.D.Nephrology Physician1578515896
Verify Peter M. Rosenberg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G85196Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4% more Medicare Part D claims than the average gastroenterology physician in 2024
847 Medicare Part D claims for 189 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.
Most prescribed
- Pantoprazole Sodium141 claims
- Omeprazole114 claims
- Famotidine61 claims
- Mesalamine34 claims
- Dexlansoprazole Dr32 claims
- Esomeprazole Magnesium32 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 MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $2,203.31
85 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
- Genesis Healthcare Partners PCPasadena, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Peter M. Rosenberg among 2,140 gastroenterology physician records in California
Peter M. Rosenberg, M.D. is one of 2,140 gastroenterology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 48% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1993 · median 2002 among the 1,538 with a school on file
- Record last updated2016 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in Pasadena → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Ihab Beblawi, M.D.Pasadena, CA 911051942272075
- Kalman Edelman, M.D.Pasadena, CA 911051164494811
- Daniel Golpanian, M.D.Pasadena, CA 911051639526957
- Glenn Littenberg, M.D.Pasadena, CA 911051033184973
- Matthew Mukherjee, M.D.Pasadena, CA 911051548439458
- Richard Nickowitz, MDPasadena, CA 911051083686893
- Steven Petit, MD AMCPasadena, CA 911051376567495
- Waleed Shindy, M.D.Pasadena, CA 911051528033693
Common questions
What is Peter M. Rosenberg, M.D.'s NPI number?
Peter M. Rosenberg, M.D.'s National Provider Identifier (NPI) is 1104890664, issued on Feb 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Peter M. Rosenberg, M.D. located?
The NPPES record lists a practice address at 50 Alessandro PL, Pasadena, CA, 91105. Phone: (626) 793-7114. Providers update this record themselves, so call before visiting.
How can I verify Peter M. Rosenberg, M.D.'s license?
NPPES lists California license number G85196, 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 Peter M. Rosenberg, M.D. prescribe under Medicare Part D?
In 2024, Peter M. Rosenberg, M.D. had 847 Medicare Part D claims for 189 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Peter M. Rosenberg, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 of 100. 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.