Adrienne A. Nassar, M.D.
Endocrinology, Diabetes & Metabolism Physician · San Diego, CA
Adrienne A. Nassar, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in San Diego, California, and NPI 1063625002, issued on May 7, 2007. Check the license (California A116436, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Adrienne A. Nassar
- Credential
- M.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License numbers
- A116436 CA
40600 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 3851 Shaw Ridge RD, San Diego, CA 92130
- Phone
- (877) 236-0333
- Enumerated
- May 7, 2007
- Record last updated
- Nov 29, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (858) 847-3739
- Medicare enrollment
- Enrolled (PECOS I20131025000388); accepts Medicare assignment
- Medical or professional school
- Michigan State University College Of Human Medicine, 2007
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 1,131 in California → Look up another NPI →
Also registered at 3851 Shaw Ridge RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kristina Byers-Spencer, MDInternal Medicine Physician1487233250
Verify Adrienne A. Nassar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A116436Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
54% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
1,217 Medicare Part D claims for 263 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims.
Most prescribed
- Levothyroxine Sodium336 claims
- Alendronate Sodium125 claims
- Methimazole94 claims
- Hydrocortisone58 claims
- Forteo37 claims
- Nano 2nd Gen Pen Needle34 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.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Adrienne A. Nassar among 1,131 endocrinology, diabetes & metabolism physician records in California
Adrienne A. Nassar, M.D. is one of 1,131 endocrinology, diabetes & metabolism physician records with a practice address in California. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 46% of them.
- NPI issued2007 · 46% of these records are older, 42% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2007 · median 2003 among the 779 with a school on file
- Record last updated2021 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in California
There are 1,131 endocrinology, diabetes & metabolism physician records in California.
All 1,131 in California → Every provider in San Diego → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Puneet Arora, MDSan Diego, CA 921301164484960
- Alain BaronSan Diego, CA 921301356845440
- Simon Bruce, M.D.San Diego, CA 921301043648967
- Juan Frias, M.D.San Diego, CA 921301134437601
- Ken Fujioka, M.D.San Diego, CA 921301811007255
- Samantha Harris, M.D.San Diego, CA 921301720305436
- Michael Lee, M.D.San Diego, CA 921301760406649
- Raymond PlodkowskiSan Diego, CA 921301104831247
Common questions
What is Adrienne A. Nassar, M.D.'s NPI number?
Adrienne A. Nassar, M.D.'s National Provider Identifier (NPI) is 1063625002, issued on May 7, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Adrienne A. Nassar, M.D. located?
The NPPES record lists a practice address at 3851 Shaw Ridge RD, San Diego, CA, 92130. Phone: (877) 236-0333. Providers update this record themselves, so call before visiting.
How can I verify Adrienne A. Nassar, M.D.'s license?
NPPES lists California license number A116436, 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 Adrienne A. Nassar, M.D. prescribe under Medicare Part D?
In 2024, Adrienne A. Nassar, M.D. had 1,217 Medicare Part D claims for 263 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.