Si Van Nguyen, M.D.
Anatomic Pathology & Clinical Pathology Physician · Garden Grove, CA
Si Van Nguyen, M.D. is an anatomic pathology & clinical pathology physician with a practice address in Garden Grove, California, and NPI 1841234952, issued on Jun 16, 2006. Check the license (California A48904, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Si Van Nguyen
- Credential
- M.D.
- Primary taxonomy
- Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
- License number
- A48904 CA
Self-reported in NPPES; status is on the state search - Practice location
- 12601 Garden Grove Blvd, Garden Grove, CA 92843
- Phone
- (949) 874-0827
- Enumerated
- Jun 16, 2006
- Record last updated
- Oct 15, 2024
- Fax
- (310) 698-7054
- Medicaid ID
- 00A489040 CA
- Medicare enrollment
- Enrolled (PECOS I20040414001095); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical School At San Antonio, 1989
- Entity
- Type 1 · individual
8 nearest anatomic pathology & clinical pathology physician records → All 1,554 in California → Look up another NPI →
Also registered at 12601 Garden Grove Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Senior AdjainoPsychiatric/Mental Health Nurse Practitioner1720784390
- Tommy Cao, PHARM.DPharmacotherapy Pharmacist1386472330
- Hillary ChangEmergency Registered Nurse1699552661
- Antony Chen, DOAnatomic Pathology & Clinical Pathology Physician1235327701
- William Galdamez, PAMedical Physician Assistant1295047413
- Gihan George, M.D.Anesthesiology Physician1710055850
Verify Si Van Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A48904Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $145.97
2 payments; by number, the most common kind was food and beverage; the largest payer was Leo Pharma Inc. The 2,607 providers of this specialty with any payment received $3,565.00 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.
Bills Medicare through 2 group practices
- Affiliated Pathologists Medical Group, Inc.Garden Grove, CA
- Garden Grove Pathology Medical Group PCGarden Grove, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Si Van Nguyen among 1,554 anatomic pathology & clinical pathology physician records in California
Si Van Nguyen, M.D. is one of 1,554 anatomic pathology & clinical pathology physician records with a practice address in California. 65% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 57% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated1989 · median 2003 among the 891 with a school on file
- Record last updated2024 · 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 207ZP0102X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anatomic Pathology & Clinical Pathology Physician providers in California
There are 1,554 anatomic pathology & clinical pathology physician records in California.
All 1,554 in California → Every provider in Garden Grove → Anatomic Pathology & Clinical Pathology Physician nationwide →
The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes
- Antony Chen, DOGarden Grove, CA 928431235327701
- Mark Boonyasampant, M.D.Fullerton, CA 928351396037537
- John Craig, M.D.Fullerton, CA 928351538112206
- Patrick Fitzgibbons, M.D.Fullerton, CA 928351568415743
- Sandhya John, M.D.Fullerton, CA 928351528402427
- Aditya Kuwadekar, M.D.Fullerton, CA 928351790139285
- Jay Packer, M.D.Fullerton, CA 928351821033150
- Vishal Chandan, MDOrange, CA 928681841203445
Common questions
What is Si Van Nguyen, M.D.'s NPI number?
Si Van Nguyen, M.D.'s National Provider Identifier (NPI) is 1841234952, issued on Jun 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Si Van Nguyen, M.D. located?
The NPPES record lists a practice address at 12601 Garden Grove Blvd, Garden Grove, CA, 92843. Phone: (949) 874-0827. Providers update this record themselves, so call before visiting.
How can I verify Si Van Nguyen, M.D.'s license?
NPPES lists California license number A48904, 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.
What is Si Van Nguyen, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. 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.