Andy Nguyen
Endocrinology, Diabetes & Metabolism Physician · Westminster, CA
Andy Nguyen is an endocrinology, diabetes & metabolism physician with a practice address in Westminster, California, and NPI 1851746028, issued on Apr 25, 2016. Check the license (California 20A17347, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Andy Nguyen
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- 20A17347 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9211 Bolsa Ave Ste 221, Westminster, CA 92683
- Phone
- (714) 898-9966
- Enumerated
- Apr 25, 2016
- Record last updated
- Nov 1, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20220204000296); accepts Medicare assignment
- Medical or professional school
- University Of North Texas Hsc, College Of Osteopathic Med, 2016
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 1,131 in California → Look up another NPI →
Verify Andy Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A17347Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
20 Medicare Part D claims, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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: $487.62
8 payments; by number, the most common kind was food and beverage; the largest payer was Teva Pharmaceuticals USA, 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.
Andy Nguyen among 1,131 endocrinology, diabetes & metabolism physician records in California
Andy Nguyen 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 2016, is newer than 86% of them.
- NPI issued2016 · 86% of these records are older, 11% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2016 · 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 Westminster → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Lan Nguyen, MDWestminster, CA 926831710915673
- Nicholas Tran, M.D.Westminster, CA 926831265498349
- Afshin Hamidi, M.D.Rancho Santa Margarita, CA 926881609222090
- Amitpal Kohli, M.D.Laguna Niguel, CA 926771215151071
- Maryam Nemati, M.D.Laguna Niguel, CA 926771750872305
- Stuart Seigel, MDLaguna Niguel, CA 926771073763983
- Joseph Barrera, M.D.Mission Viejo, CA 926911629054630
- Jessica Chan, MDMission Viejo, CA 926911275927485
Common questions
What is Andy Nguyen's NPI number?
Andy Nguyen's National Provider Identifier (NPI) is 1851746028, issued on Apr 25, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Andy Nguyen located?
The NPPES record lists a practice address at 9211 Bolsa Ave Ste 221, Westminster, CA, 92683. Phone: (714) 898-9966. Providers update this record themselves, so call before visiting.
How can I verify Andy Nguyen's license?
NPPES lists California license number 20A17347, 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 Andy Nguyen prescribe under Medicare Part D?
In 2024, Andy Nguyen had 20 Medicare Part D claims; 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.