Brian Nan Peng
Endocrinology, Diabetes & Metabolism Physician · Valencia, CA
Brian Nan Peng is an endocrinology, diabetes & metabolism physician with a practice address in Valencia, California, and NPI 1023637188, issued on Apr 9, 2020. Check the license (California A183994, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Brian Nan Peng
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- A183994 CA
Self-reported in NPPES; status is on the state search - Practice location
- 25775 Mcbean Pkwy Ste 202, Valencia, CA 91355
- Phone
- (661) 753-5464
- Enumerated
- Apr 9, 2020
- Record last updated
- Sep 11, 2025
- Fax
- (661) 753-5466
- Medicare enrollment
- Enrolled (PECOS I20250729001705); accepts Medicare assignment
- Medical or professional school
- University Of California, San Diego School Of Medicine, 2019
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 25775 Mcbean Pkwy Ste 202
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Donald Hannoun, M.D.Urology Physician1417187162
- Alan Yaghoubian, MDUrology Physician1922481167
Verify Brian Nan Peng in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A183994Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
467 Medicare Part D claims for 73 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 62% of claims.
Most prescribed
- Ozempic67 claims
- Jardiance34 claims
- Metformin Hcl23 claims
- Mounjaro23 claims
- Trulicity22 claims
- Lantus Solostar21 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: $9.35
1 payment: food and beverage; the largest payer was Beta Bionics, Inc. The 5,661 providers of this specialty with any payment received $5,742.15 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
- The Regents OF The University OF CaliforniaSanta Monica, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in California
There are 1,131 endocrinology, diabetes & metabolism physician records in California.
Other endocrinology, diabetes & metabolism physician records in California
- Evan Abel, MDSanta Monica, CA1619067238
- Anita Abraham, M.D.Stockton, CA1558380337
- Sallie Adams, M.D.Roseville, CA1255342085
- Helen Adelberg, M.D.Encino, CA1093935447
- Yewande Adepoju, DOOroville, CA1467892984
- David Aftergood, MDBeverly Hills, CA1639259328
- Nidhi Agarwal, MDTorrance, CA1518387125
- Bahar Aghighi, MDSanta Cruz, CA1770562134
- Tyler Aguinaldo, MDBurlingame, CA1306811906
- Susan Ahern, D.O.Ventura, CA1508156597
Common questions
What is Brian Nan Peng's NPI number?
Brian Nan Peng's National Provider Identifier (NPI) is 1023637188, issued on Apr 9, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Brian Nan Peng located?
The NPPES record lists a practice address at 25775 Mcbean Pkwy Ste 202, Valencia, CA, 91355. Phone: (661) 753-5464. Providers update this record themselves, so call before visiting.
How can I verify Brian Nan Peng's license?
NPPES lists California license number A183994, 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 Brian Nan Peng prescribe under Medicare Part D?
In 2024, Brian Nan Peng had 467 Medicare Part D claims for 73 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.