Lanchinh H. Nguyen, MD
Gastroenterology Physician · Vacaville, CA
Lanchinh H. Nguyen, MD is a gastroenterology physician with a practice address in Vacaville, California, and NPI 1487732921, issued on Nov 1, 2006. Check the license (California G80639, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Lanchinh H. Nguyen
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- G80639 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1 Quality Dr, Vacaville, CA 95688
- Phone
- (707) 453-5000
- Enumerated
- Nov 1, 2006
- Record last updated
- Dec 13, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20070302000188); accepts Medicare assignment
- Medical or professional school
- George Washington University School Of Medicine, 1993
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 1 Quality Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Azim Ahmady, MDFamily Medicine Physician1417035916
- Lamia Alazzawi, PHARM.D.Pharmacist1407380645
- Delaine Alejandro, DOFamily Medicine Physician1487816294
Verify Lanchinh H. Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G80639Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
35% fewer Medicare Part D claims than the average gastroenterology physician in 2024
524 Medicare Part D claims for 234 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Gavilyte-C139 claims
- Omeprazole59 claims
- Mesalamine52 claims
- Pantoprazole Sodium36 claims
- Buspirone Hcl32 claims
- Dicyclomine Hcl29 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 2 group practices
- Dignity Health Medical FoundationWoodland, CA
- Permanente Medical Group IncVacaville, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Lanchinh H. Nguyen among 2,140 gastroenterology physician records in California
Lanchinh H. Nguyen, MD is one of 2,140 gastroenterology physician records with a practice address in California. 83% 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, 48% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1993 · median 2002 among the 1,538 with a school on file
- Record last updated2021 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in Vacaville → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Wai Kan Chiu, M.D., PH.D.Cameron Park, CA 956821801258686
- Matthew Cole, M.D., M.P.H.Cameron Park, CA 956821851450522
- Russell Jacoby, MDCameron Park, CA 956821700852878
- Majd Michael, M.D.Cameron Park, CA 956821306223177
- Christopher Romberg, MDCameron Park, CA 956821215096953
- Brant Lutsi, M.D.Woodland, CA 956951265608186
- Henry Mok, M.D.Woodland, CA 956951710903125
- Lorenzo Rossaro, MDWoodland, CA 956951750368163
Common questions
What is Lanchinh H. Nguyen, MD's NPI number?
Lanchinh H. Nguyen, MD's National Provider Identifier (NPI) is 1487732921, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Lanchinh H. Nguyen, MD located?
The NPPES record lists a practice address at 1 Quality Dr, Vacaville, CA, 95688. Phone: (707) 453-5000. Providers update this record themselves, so call before visiting.
How can I verify Lanchinh H. Nguyen, MD's license?
NPPES lists California license number G80639, 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 Lanchinh H. Nguyen, MD prescribe under Medicare Part D?
In 2024, Lanchinh H. Nguyen, MD had 524 Medicare Part D claims for 234 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.