Individual provider Active NPI

Jack Buchanan, MD, PHD

  • Psychiatry Physician
  • San Francisco, CA
National Provider Identifier
1093343014
Registry record updated Dec 12, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Psychiatry PhysicianTaxonomy code 2084P0800X
License
A192424 Issued in CA
Practice address
1001 Potrero Ave BLDG 5
San Francisco, CA 94110-3518
Phone
(628) 206-8125
NPI assigned
Mar 27, 2020
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Dec 12, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Psychiatry Physician 2084P0800X A192424 CA Primary

Addresses

Primary practice location

1001 Potrero Ave BLDG 5
San Francisco, CA 94110-3518

Mailing address

166 Geary St
Ste 1500 #1717
San Francisco, CA 94108
Phone (415) 745-2855

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA
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 1

Enrollment IDStateProvider typePAC IDDetails
I20240917001897 CA Practitioner - Psychiatry 8426449554 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Psychiatry
Education
University of Michigan Medical School, 2020
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Amast Medical Associates PCGroup PAC ID 4880190396, 2 clinicians

Practice addresses (Care Compare)

28 Geary St
Suite 625
San Francisco, CA 94108-5722
Phone (707) 861-8179

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
A192424CAMDPsychiatry Physician
4833CAMDNurse Practitioner

Practice roles

OrganizationSpecialtyStatusNew patients
Amast Medical Associates, PC Psychiatry CurrentSince Jul 31, 2025 Accepting new patients
Hammock Health Incorporated CurrentSince Jul 1, 2024 Accepting new patients
City & County of San Francisco Current Accepting new patients
City & County of San Francisco CurrentSince Aug 27, 2024 Accepting new patients
City and County of San Francisco CurrentSince Aug 27, 2024 Accepting new patients

Locations

28 Geary St
Ste 625
San Francisco, CA 94108
Phone (510) 372-9455

1001 Potrero Ave
San Francisco, CA 94110
Phone (415) 206-2305

1001 Potrero Ave
Bldg 5
San Francisco, CA 94110
Phone (628) 206-5753

166 Geary St
Ste 1500
San Francisco, CA 94108
Phone (415) 636-9700

Organizations & group practices 5

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 2

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": "1585267200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1765497600000",
    "number": "1093343014",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "166 GEARY ST",
            "address_2": "STE 1500 #1717",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "94108",
            "telephone_number": "415-745-2855",
            "fax_number": "415-728-9876"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1001 POTRERO AVE BLDG 5",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941103518",
            "telephone_number": "628-206-8125"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "BUCHANAN",
        "first_name": "JACK",
        "name_prefix": "Dr.",
        "credential": "MD, PHD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2020-03-27",
        "last_updated": "2025-12-12",
        "certification_date": "2025-12-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "CA",
            "license": "A192424",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in San Francisco, CA

Sources for this page

Verify at the official NPI Registry.