Tan Quoc Nguyen, MD
Family Medicine Physician · Anaheim, CA
Tan Quoc Nguyen, MD is a family medicine physician with a practice address in Anaheim, California, and NPI 1942468525, issued on May 29, 2008. Check the license (California A103725, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Tan Quoc Nguyen
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A103725 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2441 W LA Palma Ave Ste 100, Anaheim, CA 92801
- Phone
- (657) 282-6356
- Enumerated
- May 29, 2008
- Record last updated
- Mar 21, 2023
- Medicare enrollment
- Enrolled (PECOS I20091008000435); accepts Medicare assignment
- Medical or professional school
- Michigan State University College Of Human Medicine, 2006
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 2441 W LA Palma Ave Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Tan Quoc Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A103725Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% fewer Medicare Part D claims than the average family medicine physician in 2024
1,588 Medicare Part D claims for 155 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 35 claims were for opioids.
Most prescribed
- Atorvastatin Calcium118 claims
- Amlodipine Besylate97 claims
- Metformin Hcl88 claims
- Famotidine78 claims
- Fluticasone Propionate71 claims
- Levothyroxine Sodium70 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): 100 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).
Bills Medicare through one group practice
- University OF California IrvineAnaheim, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tan Quoc Nguyen among 17,133 family medicine physician records in California
Tan Quoc Nguyen, MD is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 53% of them.
- NPI issued2008 · 53% of these records are older, 42% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2006 · median 2005 among the 10,652 with a school on file
- Record last updated2023 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
234 family medicine physician records list a practice address in Anaheim
They are 234 of the 9,018 NPPES records with a practice address in Anaheim, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Anaheim → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
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- Cynthia Haq, MDAnaheim, CA 928011881646917
- Maria Elena Hetts, M.D.Anaheim, CA 928011154308773
- Diane Jerng, MDAnaheim, CA 928011154321123
- Paula Joubert-Greene, MDAnaheim, CA 928011437156056
- Mary Therese Kerrigan, M.DAnaheim, CA 928011215920038
Common questions
What is Tan Quoc Nguyen, MD's NPI number?
Tan Quoc Nguyen, MD's National Provider Identifier (NPI) is 1942468525, issued on May 29, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Tan Quoc Nguyen, MD located?
The NPPES record lists a practice address at 2441 W LA Palma Ave Ste 100, Anaheim, CA, 92801. Phone: (657) 282-6356. Providers update this record themselves, so call before visiting.
How can I verify Tan Quoc Nguyen, MD's license?
NPPES lists California license number A103725, 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 Quoc Nguyen, MD prescribe under Medicare Part D?
In 2024, Tan Quoc Nguyen, MD had 1,588 Medicare Part D claims for 155 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Tan Quoc Nguyen, MD's MIPS final score?
The 2023 MIPS final score is 100 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.