Individual provider Active NPI

Susan Mayo, M.D.

  • Internal Medicine Physician
  • San Francisco, CA
National Provider Identifier
1386696185
Registry record updated May 8, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
A63489 Issued in CA
Practice address
1 California St Ste 2300
San Francisco, CA 94111-5424
Phone
(800) 997-6196
Fax
(833) 523-9924
NPI assigned
May 17, 2006
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on May 8, 2025

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

Specialties & licenses 5

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 52330 SC
Internal Medicine Physician 207R00000X 2018016629 MO
Internal Medicine Physician 207R00000X 4301115586 MI
Internal Medicine Physician 207R00000X R8607 TX
Internal Medicine Physician 207R00000X A63489 CA Primary

Addresses

Primary practice location

1 California St Ste 2300
San Francisco, CA 94111-5424

Mailing address

PO Box 1176
Thousand Oaks, CA 91358-0176
Phone (805) 495-1066

Other practice location 1

PO Box 1176
Thousand Oaks, CA 91358-0176
Phone (805) 495-1066

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA, MI2 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
I20110520000283 CA Practitioner - Internal Medicine 6709901606 Reassigns benefits to 1 organization
I20250627003676 MI Practitioner - Internal Medicine 6709901606 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
Other, 1996
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Doctor on Demand Professionals of CaliforniaGroup PAC ID 6406161538, 18 clinicians
Doctor on Demand Professionals P CGroup PAC ID 9436464567, 113 clinicians

Practice addresses (Care Compare)

1 California St
Suite 2300
San Francisco, CA 94111-5424
Phone (800) 997-6196

601 Abbot Rd
East Lansing, MI 48823-3366
Phone (800) 997-6196

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
A63489CAMDInternal Medicine Physician
4301115586MIMDInternal Medicine Physician
2018016629MOMDInternal Medicine Physician
52330SCMDInternal Medicine Physician
R8607TXMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Doctor on Demand Professionals P C CurrentSince Apr 24, 2025 Accepting new patients
Doctor on Demand Professionals of California CurrentSince Feb 16, 2020 Accepting new patients

Locations

1 California St
Ste 2300
San Francisco, CA 94111
Phone (800) 929-0926

601 Abbott Rd
East Lansing, MI 48823
Phone 24852821166

Interoperability endpoints

  • Direct secure messaging: susan.mayo.1@30520.direct.athenahealth.com

Organizations & group practices 2

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.

NPI Registry JSON

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

{
    "created_epoch": "1147824000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1746662400000",
    "number": "1386696185",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 1176",
            "city": "THOUSAND OAKS",
            "state": "CA",
            "postal_code": "913580176",
            "telephone_number": "805-495-1066"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1 CALIFORNIA ST STE 2300",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941115424",
            "telephone_number": "800-997-6196",
            "fax_number": "833-523-9924"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "PO Box 1176",
            "address_purpose": "LOCATION",
            "city": "Thousand Oaks",
            "state": "CA",
            "postal_code": "913580176",
            "country_code": "US",
            "telephone_number": "805-495-1066",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MAYO",
        "first_name": "SUSAN",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2006-05-17",
        "last_updated": "2025-05-08",
        "certification_date": "2025-05-08",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "SC",
            "license": "52330",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MO",
            "license": "2018016629",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MI",
            "license": "4301115586",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "TX",
            "license": "R8607",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "A63489",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in San Francisco, CA

Sources for this page

Verify at the official NPI Registry.