Individual provider Active NPI

Aijaz Ahmed, MD

  • Hepatology Physician
  • Stanford, CA
National Provider Identifier
1447351747
Registry record updated Sep 3, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Hepatology PhysicianTaxonomy code 207RI0008X
License
A60520 Issued in CA
Practice address
300 Pasteur Dr
Stanford, CA 94305-2200
Phone
(650) 723-4000
NPI assigned
Sep 26, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 3, 2026

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

Specialties & licenses 4

Specialty (taxonomy)CodeLicenseStatePrimary
Gastroenterology Physician 207RG0100X A60520 CA
Hepatology Physician 207RI0008X A60520 CA Primary
Obesity Medicine (Family Medicine) Physician 207QB0002X A60520 CA
Transplant Hepatology Physician 207RT0003X A60520 CA

Addresses

Primary practice location

300 Pasteur Dr
Stanford, CA 94305-2200

Mailing address

300 Pasteur Dr
Stanford, CA 94305-2200
Phone (650) 723-4000

Other practice location 1

1255 Las Tablas Rd Ste 201
Templeton, CA 93465-9750
Phone (805) 739-3890

Other practice location 2

1551 Bishop St Ste 510
San Luis Obispo, CA 93401-4665
Phone (805) 434-5530

Other identifiers 1

IdentifierTypeStateIssuer
00A605200MedicaidCA

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in NV, CA2 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 2

Enrollment IDStateProvider typePAC IDDetails
I20140103001117 NV Practitioner - Internal Medicine 4284709866 Reassigns benefits to 1 organization
I20141006002517 CA Practitioner - GastroenterologyPractitioner - Internal Medicine 4284709866 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
GastroenterologyAlso: Internal Medicine
Education
Other, 1990
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Stanford Health CareGroup PAC ID 6709797491, 3,152 clinicians

Practice addresses (Care Compare)

1310 Las Tablas Rd
Suite 204
Templeton, CA 93465-9747
Phone (805) 434-3458

170 Alameda de Las Pulgas
Redwood City, CA 94062-2751
Phone (650) 369-5811

2585 Samaritan Dr
San Jose, CA 95124-4107
Phone (650) 723-4000

300 Pasteur Dr
Stanford, CA 94305-2200
Phone (650) 723-4000

420 Broadway St
Redwood City, CA 94063-3132
Phone (650) 723-4000

450 Broadway St
Redwood City, CA 94063-3132
Phone (650) 723-4000

5555 W Las Positas Blvd
Pleasanton, CA 94588-4000
Phone (925) 847-3000

5565 W Las Positas Blvd
Suite 150
Pleasanton, CA 94588-5805
Phone (650) 723-4000

5800 Hollis St
Emeryville, CA 94608-2016
Phone (510) 806-2100

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
88.53 of 100Reported as group
Quality
87.08
Promoting interoperability
100
Improvement activities
40
Cost
69.51

Procedures performed for Medicare patients

ProcedureNumber of procedures
Colonoscopy1-10
Upper gastrointestinal (GI) endoscopy for acid reflux1-10

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
A60520CAMDTransplant Hepatology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
County of Santa Clara CurrentSince Aug 12, 2014 Accepting new patients
County of Santa Clara CurrentSince Aug 12, 2014 Accepting new patients
Stanford Health Care CurrentSince Jan 27, 2000 Accepting new patients
County of Santa Clara Current Accepting new patients
Stanford Health Care CurrentSince Jan 27, 2000 Accepting new patients
The Hospital Committee for the Livermore-Pleasanton Areas Past Accepting new patients
Stanford Health Care Tri-Valley Past Accepting new patients
Stanford Hospital and Clinics Past Accepting new patients
Barton Healthcare System Past Accepting new patients
Pacific Central Coast Health Centers Past Accepting new patients
Lucile Salter Packard Children'S Hospital at Stanford Past Accepting new patients
County of Santa Clara Past Accepting new patients

Locations

7710 N Fresno St
Ste 102
Fresno, CA 93720
Phone (559) 437-9100

7999 Gateway Blvd
Ste 200
Newark, CA 94560
Phone (510) 806-2947

450 Broadway St
Redwood City, CA 94063
Phone (650) 723-5643

450 Broadway St
Fl 2
Redwood City, CA 94063
Phone (650) 498-3931

751 S Bascom Ave
San Jose, CA 95128
Phone (408) 885-5110

525 Plaza Dr
Ste 307
Santa Maria, CA 93454
Phone (805) 434-3458

361 Town Ctr W
Santa Maria, CA 93458
Phone (805) 922-6581

300 Pasteur Dr
#5500
Stanford, CA 94305
Phone (415) 723-5525

300 Pasteur Dr
Stanford, CA 94305
Phone (650) 498-5710

1255 Las Tablas Rd
Ste 201
Templeton, CA 93465
Phone (805) 434-0339

1310 Las Tablas Rd
Ste 204
Templeton, CA 93465
Phone (805) 434-0333

10001 S Eastern Ave
Ste 408
Henderson, NV 89052
Phone (702) 263-0117

Interoperability endpoints

  • Direct secure messaging: aahmed36809@direct.stanfordhealthcare.org

Organizations & group practices 12

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.

Hospital & facility affiliations 12

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

NPI Registry JSON

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

{
    "created_epoch": "1159228800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1788393600000",
    "number": "1447351747",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "300 PASTEUR DR",
            "city": "STANFORD",
            "state": "CA",
            "postal_code": "943052200",
            "telephone_number": "650-723-4000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "300 PASTEUR DR",
            "city": "STANFORD",
            "state": "CA",
            "postal_code": "943052200",
            "telephone_number": "650-723-4000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1255 Las Tablas Rd Ste 201",
            "address_purpose": "LOCATION",
            "city": "Templeton",
            "state": "CA",
            "postal_code": "934659750",
            "country_code": "US",
            "telephone_number": "805-739-3890",
            "fax_number": "805-434-0023",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1551 Bishop St Ste 510",
            "address_purpose": "LOCATION",
            "city": "San Luis Obispo",
            "state": "CA",
            "postal_code": "934014665",
            "country_code": "US",
            "telephone_number": "805-434-5530",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "AHMED",
        "first_name": "AIJAZ",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-09-26",
        "last_updated": "2026-09-03",
        "certification_date": "2026-09-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "CA",
            "license": "A60520",
            "primary": false
        },
        {
            "code": "207RI0008X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hepatology",
            "state": "CA",
            "license": "A60520",
            "primary": true
        },
        {
            "code": "207QB0002X",
            "taxonomy_group": "",
            "desc": "Family Medicine, Obesity Medicine",
            "state": "CA",
            "license": "A60520",
            "primary": false
        },
        {
            "code": "207RT0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Transplant Hepatology",
            "state": "CA",
            "license": "A60520",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00A605200",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Stanford, CA

Sources for this page

Verify at the official NPI Registry.