Active NPI
Susan Mayo, M.D.
- Internal Medicine Physician
- San Francisco, CA
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Internal Medicine Physician
- License
- A63489
- 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
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 5
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| 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, MI
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 2
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
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
| License | State | Type | Specialty |
|---|---|---|---|
| A63489 | CA | MD | Internal Medicine Physician |
| 4301115586 | MI | MD | Internal Medicine Physician |
| 2018016629 | MO | MD | Internal Medicine Physician |
| 52330 | SC | MD | Internal Medicine Physician |
| R8607 | TX | MD | Internal Medicine Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Doctor on Demand Professionals P C | Current | Accepting new patients | |
| Doctor on Demand Professionals of California | Current | 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
- 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.
-
- Family Medicine Physician
- San Francisco, CA
- NPI 1346658614
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
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 8, 2025; 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.