Mustafa Ammar, M.D.
Internal Medicine Physician · Yuba City, CA
Mustafa Ammar, M.D. is an internal medicine physician with a practice address in Yuba City, California, and NPI 1558363168, issued on Aug 12, 2005. Check the license (California A52256, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mustafa Ammar
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A52256 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1000 Sutter St, Yuba City, CA 95991
- Phone
- (530) 673-9420
- Enumerated
- Aug 12, 2005
- Record last updated
- Mar 26, 2026
- Fax
- (530) 673-9451
- Medicare enrollment
- Enrolled (PECOS I20041006001085); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 1000 Sutter St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Prabhjot Aujla, PA-CPhysician Assistant1659949659
- Thinn Aung, M.D.Pediatrics Physician1528050770
- Kami Bath, MSN, FNPFamily Nurse Practitioner1114173465
- Shameem BathPharmacist1023900131
- Vanessa Campos, ASWClinical Social Worker1134832702
- Sandra Day, P.A.Medical Physician Assistant1346364841
Verify Mustafa Ammar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A52256Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average internal medicine physician in 2024
6,756 Medicare Part D claims for 338 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims. 247 claims were for opioids.
Most prescribed
- Atorvastatin Calcium497 claims
- Metformin Hcl304 claims
- Amlodipine Besylate250 claims
- Omeprazole247 claims
- Losartan Potassium233 claims
- Gabapentin185 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.
Industry payments in 2024: $836.01
47 payments; by number, the most common kind was food and beverage; the largest payer was ViiV Healthcare Company. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Ampla HealthYuba City, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
22 internal medicine physician records list a practice address in Yuba City
They are 22 of the 1,726 NPPES records with a practice address in Yuba City, and 17,696 internal medicine physician records in California.
All 22 in Yuba City → All 17,696 in California → Every provider in Yuba City →
Other internal medicine physician records in California
- Jacob Aaron, MDSan Francisco, CA1407202518
- Alistair Aaronson, MDStanford, CA1457628760
- Jose Abad., MDSacramento, CA1144607219
- Donna Abare, MDOakland, CA1386722155
- Marce AbareScotts Valley, CA1457744708
- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Mustafa Ammar, M.D.'s NPI number?
Mustafa Ammar, M.D.'s National Provider Identifier (NPI) is 1558363168, issued on Aug 12, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mustafa Ammar, M.D. located?
The NPPES record lists a practice address at 1000 Sutter St, Yuba City, CA, 95991. Phone: (530) 673-9420. Providers update this record themselves, so call before visiting.
How can I verify Mustafa Ammar, M.D.'s license?
NPPES lists California license number A52256, 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 Mustafa Ammar, M.D. prescribe under Medicare Part D?
In 2024, Mustafa Ammar, M.D. had 6,756 Medicare Part D claims for 338 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.