Individual Healthcare Provider
Adrienne J Nguyen, MD
Provider's NPPES record last updated: June 3, 2026
Overview
- Entity Type
- Individual Healthcare Provider
- NPI
- 1376635219
- Primary Specialty
- Internal Medicine — Gastroenterology
- Practice Location
- San Carlos, California
- Sole Proprietor
- No
Federal Screening
NPISignal checked this NPI against federal exclusion sources. Results below are based on the NPI number itself — an identifier match, not a name match.
List of Excluded Individuals/Entities (LEIE)
HHS Office of Inspector General
No potential match was identified in NPISignal's indexed List of Excluded Individuals/Entities (LEIE) records as of 2026-09-10.
- Source data
- September 10, 2026
- Records indexed
- 84,001
- Screened
- Sep 20, 2026, 1:20 AM UTC
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
SAM.gov Exclusions
U.S. General Services Administration
SAM.gov Exclusions was not checked.
SAM.gov screening is not configured on this deployment. No SAM check has been performed.
- Screened
- Not checked
This is an NPI-based check only. NPISignal does not publish name-based exclusion matches on a provider profile. A shared or similar name is a lead that requires human review, not an identification, and this page is not the place to make one. Run a name-based screening below to see potential matches with the reasons for each.
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
Searches OIG LEIE and SAM.gov by name and reviews every potential match.
Specialties & Taxonomies
- Primary
Internal Medicine
Gastroenterology
Allopathic & Osteopathic Physicians
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
Taxonomy code 207RG0100X
Provider-Reported License Information
- Internal Medicine (California)
- C53504
- Internal Medicine (Missouri)
- 2013009358
Practice Locations
Practice Location
1000 Laurel St
San Carlos, California 94070-3939
Phone: (650) 596-8800
Additional Practice Location
6500 Hospital Dr
Hannibal, Missouri 63401-6890
Phone: (573) 629-3491
Fax: (573) 629-3429
Additional Practice Location
6000 Hospital Dr
Hannibal, Missouri 63401-6887
Phone: (573) 248-1300
Record Information
- Enumeration Date
- September 29, 2006
- Provider's NPPES Record Last Updated
- June 3, 2026
- Certification Date
- June 3, 2026
- NPISignal NPPES Dataset
- August 2026
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