Adrienne J Nguyen, MD

Primary specialty

Gastroenterology PhysicianTaxonomy code 207RG0100X

License

C53504 Issued in CA

Practice address

1000 Laurel St
San Carlos, CA 94070-3939

Phone

(650) 596-8800

Fax

(650) 596-8802

NPI assigned

Sep 29, 2006

Sex

Female

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in MO, MD, DC3 enrollments

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 3

Specialty

Gastroenterology

Education

University of Missouri, Kansas City, School of Medicine, 1996

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Medstar Medical Group II LLCGroup PAC ID 0547413825, 3,726 clinicians

Hannibal Regional Healthcare System IncGroup PAC ID 1254236300, 256 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Hannibal Regional Hospital Hospital, Hannibal, MO, CCN 260025
• Medstar Franklin Square Medical Center Hospital, Rosedale, MD, CCN 210015
• Medstar Union Memorial Hospital Hospital, Baltimore, MD, CCN 210024
• Medstar Harbor Hospital Hospital, Baltimore, MD, CCN 210034
• Medstar Good Samaritan Hospital Hospital, Baltimore, MD, CCN 210056

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: adriennenguyen@hrmg.allscriptsdirect.net
• FHIR API: https://fhir.fhirpoint.open.allscripts.com/fhirroute/open/10040602

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Hannibal Regional Healthcare System, Inc

  • Multi-Specialty Clinic/Center
  • Hannibal, MO
  • NPI 1134311392
  Medicare reassignment Care Compare group NPD
• Medstar Medical Group II LLC

  • General Practice Physician
  • Baltimore, MD
  • NPI 1184046187

  DC

  Medicare reassignment Care Compare group NPD
• Digestive Health Specialists, LLC

  • Gastroenterology Physician
  • Independence, MO
  • NPI 1801286844
  Medicare reassignment NPD
• Hannibal Regional Healthcare System Inc

  • Multi-Specialty Clinic/Center
  • Hannibal, MO
  • NPI 1003956095
  NPD
• Consultants in Gastroenterology, PC

  • Specialist
  • Independence, MO
  • NPI 1932189768
  NPD (past)
• Excel Anesthesia, LLC

  • Certified Registered Nurse Anesthetist
  • Leawood, KS
  • NPI 1366559130
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Franklin Square Hospital Center, Inc

  • General Acute Care Hospital
  • Baltimore, MD
  • NPI 1184712085
  Care Compare affiliation
• Hannibal Regional Healthcare System, Inc

  • Rural Acute Care Hospital
  • Hannibal, MO
  • NPI 1922042704
  Care Compare affiliation
• Harbor Hospital, Inc.

  • General Acute Care Hospital
  • Baltimore, MD
  • NPI 1720175623
  Care Compare affiliation
• The Good Samaritan Hospital of Maryland, Inc

  • General Acute Care Hospital
  • Baltimore, MD
  • NPI 1811084718
  Care Compare affiliation
• The Union Memorial Hospital

  • General Acute Care Hospital
  • Baltimore, MD
  • NPI 1487741427
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1159488000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1780444800000",
    "number": "1376635219",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1000 LAUREL ST",
            "city": "SAN CARLOS",
            "state": "CA",
            "postal_code": "940703939",
            "telephone_number": "650-596-8800",
            "fax_number": "650-596-8802"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1000 LAUREL ST",
            "city": "SAN CARLOS",
            "state": "CA",
            "postal_code": "940703939",
            "telephone_number": "650-596-8800",
            "fax_number": "650-596-8802"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "6500 Hospital Dr",
            "address_purpose": "LOCATION",
            "city": "Hannibal",
            "state": "MO",
            "postal_code": "634016890",
            "country_code": "US",
            "telephone_number": "573-629-3491",
            "fax_number": "573-629-3429",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "6000 Hospital Dr",
            "address_purpose": "LOCATION",
            "city": "Hannibal",
            "state": "MO",
            "postal_code": "634016887",
            "country_code": "US",
            "telephone_number": "573-248-1300",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "NGUYEN",
        "first_name": "ADRIENNE",
        "middle_name": "J",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-09-29",
        "last_updated": "2026-06-03",
        "certification_date": "2026-06-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "MO",
            "license": "2013009358",
            "primary": false
        },
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "CA",
            "license": "C53504",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Elizabeth Ann Nelson
• Victoria Neri, AMFT148852
• Newmom
• Candice Newnes
• Frances Ngok, PHARMD
• Alison Nguyen, MD
• Andrew Nguyen
• Claire Nguyen
• Jeanny Nguyen, PHARMD
• Mary Lee Nickel, L.AC.

• Gastroenterology Physician in San Carlos, CA
• Providers in San Carlos, CA by specialty
• Gastroenterology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 3, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.