Tan Dinh Ngo, M.D.
Internal Medicine Physician · Westminster, CA
Tan Dinh Ngo, M.D. is an internal medicine physician with a practice address in Westminster, California, and NPI 1770503997, issued on Jul 20, 2006. Check the license (California G75839L, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Tan Dinh Ngo
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G75839L CA
Self-reported in NPPES; status is on the state search - Practice location
- 9431 Edinger Ave, Westminster, CA 92683
- Phone
- (714) 839-8400
- Enumerated
- Jul 20, 2006
- Record last updated
- Nov 30, 2022
- Fax
- (714) 839-8230
- Medicare enrollment
- Enrolled (PECOS I20101124000682); accepts Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 1991
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 9431 Edinger Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kim Nguyen Pham, OMD, LA.CAcupuncturist1467692871
Verify Tan Dinh Ngo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G75839LCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% more Medicare Part D claims than the average internal medicine physician in 2024
5,824 Medicare Part D claims for 206 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 70 claims were for opioids.
Most prescribed
- Amlodipine Besylate329 claims
- Atorvastatin Calcium267 claims
- Vascepa235 claims
- Losartan Potassium180 claims
- Olmesartan Medoxomil156 claims
- Azithromycin147 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.
The MIPS final score for 2023 (Medicare payment program): 30 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $16.20
1 payment: food and beverage; the largest payer was Amgen 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.
Tan Dinh Ngo among 17,696 internal medicine physician records in California
Tan Dinh Ngo, 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1991 · median 2004 among the 11,065 with a school on file
- Record last updated2022 · 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 Tan Dinh Ngo, M.D.'s NPI number?
Tan Dinh Ngo, M.D.'s National Provider Identifier (NPI) is 1770503997, issued on Jul 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Tan Dinh Ngo, M.D. located?
The NPPES record lists a practice address at 9431 Edinger Ave, Westminster, CA, 92683. Phone: (714) 839-8400. Providers update this record themselves, so call before visiting.
How can I verify Tan Dinh Ngo, M.D.'s license?
NPPES lists California license number G75839L, 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 Tan Dinh Ngo, M.D. prescribe under Medicare Part D?
In 2024, Tan Dinh Ngo, M.D. had 5,824 Medicare Part D claims for 206 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Tan Dinh Ngo, M.D.'s MIPS final score?
The 2023 MIPS final score is 30 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.