Lan Thi Hoang Nguyen, MD
Endocrinology, Diabetes & Metabolism Physician · Westminster, CA
Lan Thi Hoang Nguyen, MD is an endocrinology, diabetes & metabolism physician with a practice address in Westminster, California, and NPI 1710915673, issued on Jun 29, 2006. Check the license (California G58566, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Lan Thi Hoang Nguyen
- Credential
- MD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- G58566 CA
Self-reported in NPPES; status is on the state search - Practice location
- 14971 Brookhurst St, Westminster, CA 92683
- Phone
- (714) 839-5898
- Enumerated
- Jun 29, 2006
- Record last updated
- Aug 12, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (714) 839-5989
- Medicaid ID
- 00G585660 CA
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 1,131 in California → Look up another NPI →
Verify Lan Thi Hoang Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G58566Check 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
27 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 85% of claims.
Most prescribed
- Tresiba Flextouch U-10013 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.
Lan Thi Hoang Nguyen among 1,131 endocrinology, diabetes & metabolism physician records in California
Lan Thi Hoang Nguyen, MD 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 54% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2015 · 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
- Andy NguyenWestminster, CA 926831851746028
- 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 Lan Thi Hoang Nguyen, MD's NPI number?
Lan Thi Hoang Nguyen, MD's National Provider Identifier (NPI) is 1710915673, issued on Jun 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Lan Thi Hoang Nguyen, MD located?
The NPPES record lists a practice address at 14971 Brookhurst St, Westminster, CA, 92683. Phone: (714) 839-5898. Providers update this record themselves, so call before visiting.
How can I verify Lan Thi Hoang Nguyen, MD's license?
NPPES lists California license number G58566, 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 Lan Thi Hoang Nguyen, MD prescribe under Medicare Part D?
In 2024, Lan Thi Hoang Nguyen, MD had 27 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.