Van Thanh Nguyen, DO
Obstetrics & Gynecology Physician · Santa Ana, CA
Van Thanh Nguyen, DO is an obstetrics & gynecology physician with a practice address in Santa Ana, California, and NPI 1205845237, issued on Aug 7, 2006. Check the license (California 20A 6915, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Van Thanh Nguyen
- Credential
- DO
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License numbers
- 20A 6915 CA
39874 CO
Self-reported in NPPES; status is on the state search - Practice location
- 3501 S Harbor Blvd, Santa Ana, CA 92704
- Phone
- (714) 929-2300
- Enumerated
- Aug 7, 2006
- Record last updated
- May 9, 2022
- Medicaid ID
- 85729558 CO
- Medicare enrollment
- Enrolled (PECOS I20110228000427); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 3501 S Harbor Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ronnie Alas, M.D.Internal Medicine Physician1306267026
- Joel Arter, MDFamily Medicine Physician1942512744
- Eileen May Barraza, N.P.Nurse Practitioner1487105243
- Rama Bathala-Patel, MDFamily Medicine Physician1992853774
- Charles Egesdal, M.D.Pediatrics Physician1861925471
- Emad Hashemi, M.D.Obstetrics & Gynecology Physician1568492759
Verify Van Thanh Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A 6915Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
29 Medicare Part D claims for 17 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
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
- Community Medical Wellness Centers USALong Beach, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Van Thanh Nguyen among 5,088 obstetrics & gynecology physician records in California
Van Thanh Nguyen, DO is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% 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, 52% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1995 · median 2004 among the 2,700 with a school on file
- Record last updated2022 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in California
There are 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in Santa Ana → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Emad Hashemi, M.D.Santa Ana, CA 927041568492759
- Hubert Jeng, M.DSanta Ana, CA 927041134182850
- George Kallins, M.D.Santa Ana, CA 927041578756581
- Jenny Lee, M.D.Santa Ana, CA 927041801057278
- Jaime Ludmir, M.DSanta Ana, CA 927041265539712
- Diemchi Nguyenphuc, MDSanta Ana, CA 927041629104930
- Sing Tung, MDSanta Ana, CA 927041619913720
- Janel Yoshida, MDSanta Ana, CA 927041538112826
Common questions
What is Van Thanh Nguyen, DO's NPI number?
Van Thanh Nguyen, DO's National Provider Identifier (NPI) is 1205845237, issued on Aug 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Van Thanh Nguyen, DO located?
The NPPES record lists a practice address at 3501 S Harbor Blvd, Santa Ana, CA, 92704. Phone: (714) 929-2300. Providers update this record themselves, so call before visiting.
How can I verify Van Thanh Nguyen, DO's license?
NPPES lists California license number 20A 6915, 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 Van Thanh Nguyen, DO prescribe under Medicare Part D?
In 2024, Van Thanh Nguyen, DO had 29 Medicare Part D claims for 17 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.