Hien Thuy Nguyen, DO
Family Medicine Physician · Garden Grove, CA
Hien Thuy Nguyen, DO is a family medicine physician with a practice address in Garden Grove, California, and NPI 1902335904, issued on Jun 5, 2017. Check the license (California 20A17081, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Hien Thuy Nguyen
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A17081 CA
Self-reported in NPPES; status is on the state search - Practice location
- 12942 Harbor Blvd, Garden Grove, CA 92840
- Phone
- (714) 705-2120
- Enumerated
- Jun 5, 2017
- Record last updated
- Nov 9, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (714) 705-8139
- Medicare enrollment
- Enrolled (PECOS I20200909002638); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 12942 Harbor Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Duongthuy Chau, MD, DCFamily Medicine Physician1154660710
- Michael Hernandez, DOFamily Medicine Physician1790282903
- Michael Malouf, M.D.Family Medicine Physician1578549234
- Joseph Nguyen, D.O.Family Medicine Physician1710209622
- Parveen Vora, MDFamily Medicine Physician1215134689
- Martin Waltsak, PA-CPhysician Assistant1669409652
Verify Hien Thuy Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A17081Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
7% fewer Medicare Part D claims than the average family medicine physician in 2024
3,308 Medicare Part D claims for 381 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 22 claims were for opioids.
Most prescribed
- Atorvastatin Calcium241 claims
- Losartan Potassium176 claims
- Amlodipine Besylate152 claims
- Levothyroxine Sodium104 claims
- Metformin Hcl83 claims
- Pravastatin Sodium76 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.
Bills Medicare through one group practice
- Providence Medical FoundationGarden Grove, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hien Thuy Nguyen among 17,133 family medicine physician records in California
Hien Thuy Nguyen, DO 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 2017, is newer than 79% of them.
- NPI issued2017 · 79% of these records are older, 18% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2017 · median 2005 among the 10,652 with a school on file
- Record last updated2021 · 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).
69 family medicine physician records list a practice address in Garden Grove
They are 69 of the 4,572 NPPES records with a practice address in Garden Grove, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Garden Grove → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Vincent Ayroso, DOGarden Grove, CA 928401891993168
- Phillip Castellano, MDGarden Grove, CA 928401467529321
- Paul Johnson, MDGarden Grove, CA 928401497790661
- Chan Kim, MDGarden Grove, CA 928401679513550
- Khiem Lai, M.D.Garden Grove, CA 928401538165576
- Nancy Lee-Hata, MDGarden Grove, CA 928401235120734
- Gerald Lim, M.D.Garden Grove, CA 928401427091958
- Michael Malouf, M.D.Garden Grove, CA 928401578549234
Common questions
What is Hien Thuy Nguyen, DO's NPI number?
Hien Thuy Nguyen, DO's National Provider Identifier (NPI) is 1902335904, issued on Jun 5, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Hien Thuy Nguyen, DO located?
The NPPES record lists a practice address at 12942 Harbor Blvd, Garden Grove, CA, 92840. Phone: (714) 705-2120. Providers update this record themselves, so call before visiting.
How can I verify Hien Thuy Nguyen, DO's license?
NPPES lists California license number 20A17081, 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 Hien Thuy Nguyen, DO prescribe under Medicare Part D?
In 2024, Hien Thuy Nguyen, DO had 3,308 Medicare Part D claims for 381 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.