Dat Manh Nguyen, M.D.
Internal Medicine Physician · Westminster, CA
Dat Manh Nguyen, M.D. is an internal medicine physician with a practice address in Westminster, California, and NPI 1871730895, issued on Jan 13, 2009. Check the license (California A36056, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Dat Manh Nguyen
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A36056 CA
Self-reported in NPPES; status is on the state search - Practice location
- 14536 Brookhurst St, Westminster, CA 92683
- Phone
- (714) 531-2548
- Enumerated
- Jan 13, 2009
- Record last updated
- Jan 13, 2009 (not updated in 17 years: call before relying on the address or phone)
- Medicaid ID
- 00A360562 CA
- Medicare enrollment
- Enrolled (PECOS I20090502000042); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 14536 Brookhurst St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kim Oanh Tran, RPHPharmacist1518954684
Verify Dat Manh Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A36056Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
20% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,547 Medicare Part D claims for 238 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Atorvastatin Calcium180 claims
- Amlodipine Besylate121 claims
- Losartan Potassium83 claims
- Triamcinolone Acetonide71 claims
- Montelukast Sodium67 claims
- Metoprolol Succinate58 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: $146.45
2 payments; by number, the most common kind was food and beverage; the largest payer was Leo Pharma Inc. 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.
Dat Manh Nguyen among 17,696 internal medicine physician records in California
Dat Manh Nguyen, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 60% of them.
- NPI issued2009 · 60% of these records are older, 37% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1975 · median 2004 among the 11,065 with a school on file
- Record last updated2009 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
43 internal medicine physician records list a practice address in Westminster
They are 43 of the 1,306 NPPES records with a practice address in Westminster, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Westminster → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Loc Bui, M.D.Westminster, CA 926831023081387
- Andy Ho, M.D.Westminster, CA 926831801850821
- Vu Le, M.D.Westminster, CA 926831013992791
- Dean Ngo, MDWestminster, CA 926831982690582
- Loan Ngo, M.D.Westminster, CA 926831386696144
- Phuc Nguyen, M.D.Westminster, CA 926831134123961
- Vuong Nguyen, M.D.Westminster, CA 926831093701690
- Hoa Nguyen, M.DWestminster, CA 926831619931763
Common questions
What is Dat Manh Nguyen, M.D.'s NPI number?
Dat Manh Nguyen, M.D.'s National Provider Identifier (NPI) is 1871730895, issued on Jan 13, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Dat Manh Nguyen, M.D. located?
The NPPES record lists a practice address at 14536 Brookhurst St, Westminster, CA, 92683. Phone: (714) 531-2548. Providers update this record themselves, so call before visiting.
How can I verify Dat Manh Nguyen, M.D.'s license?
NPPES lists California license number A36056, 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 Dat Manh Nguyen, M.D. prescribe under Medicare Part D?
In 2024, Dat Manh Nguyen, M.D. had 2,547 Medicare Part D claims for 238 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.