Sofia Peterson, M.D.
Geriatric Medicine (Internal Medicine) Physician · Yucaipa, CA
Sofia Peterson, M.D. is a geriatric medicine (internal medicine) physician with a practice address in Yucaipa, California, and NPI 1386664498, issued on Jul 20, 2006. Check the license (California A76621, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sofia Peterson
- Credential
- M.D.
- Primary taxonomy
- Geriatric Medicine (Internal Medicine) Physician 207RG0300X
- License number
- A76621 CA
Self-reported in NPPES; status is on the state search - Practice location
- 33758 Yucaipa Blvd, Yucaipa, CA 92399
- Phone
- (909) 795-9747
- Enumerated
- Jul 20, 2006
- Record last updated
- Mar 22, 2024
- Medicaid ID
- 00A766210 CA
- Entity
- Type 1 · individual
8 nearest geriatric medicine (internal medicine) physician records → All 532 in California → Look up another NPI →
Also registered at 33758 Yucaipa Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Sofia Peterson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A76621Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% fewer Medicare Part D claims than the average geriatric medicine (internal medicine) physician in 2024
794 Medicare Part D claims for 95 beneficiaries, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium49 claims
- Amlodipine Besylate29 claims
- Levothyroxine Sodium26 claims
- Allopurinol24 claims
- Famotidine21 claims
- Lisinopril21 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): 83.5 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).
Sofia Peterson among 532 geriatric medicine (internal medicine) physician records in California
Sofia Peterson, M.D. is one of 532 geriatric medicine (internal medicine) physician records with a practice address in California. 77% 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, 46% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 51% of these records are
- Record last updated2024 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Geriatric Medicine (Internal Medicine) Physician providers in California
There are 532 geriatric medicine (internal medicine) physician records in California.
All 532 in California → Every provider in Yucaipa → Geriatric Medicine (Internal Medicine) Physician nationwide →
The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes
- Rabe Alhurani, MDVictorville, CA 923951740778398
- Victoria Rains, M.D.Redlands, CA 923731861503278
- Vishvanath Date, M.D.Loma Linda, CA 923571851482541
- Margaret Griffin, M.D.Loma Linda, CA 923571447260047
- Russell Hoxie, M.D.Loma Linda, CA 923571841290558
- Malwinder Multani, M.D.Loma Linda, CA 923571497919575
- Katalin Danji, M.D.Loma Linda, CA 923541750504080
- James Larsen, M.D.Loma Linda, CA 923541760403547
Common questions
What is Sofia Peterson, M.D.'s NPI number?
Sofia Peterson, M.D.'s National Provider Identifier (NPI) is 1386664498, issued on Jul 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Sofia Peterson, M.D. located?
The NPPES record lists a practice address at 33758 Yucaipa Blvd, Yucaipa, CA, 92399. Phone: (909) 795-9747. Providers update this record themselves, so call before visiting.
How can I verify Sofia Peterson, M.D.'s license?
NPPES lists California license number A76621, 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 Sofia Peterson, M.D. prescribe under Medicare Part D?
In 2024, Sofia Peterson, M.D. had 794 Medicare Part D claims for 95 beneficiaries; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. Part D covers Medicare prescriptions only.
What is Sofia Peterson, M.D.'s MIPS final score?
The 2023 MIPS final score is 83.5 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.