Active NPI
Charles S. Landefeld, M.D.
- Internal Medicine Physician
- San Francisco, CA
National Provider Identifier
1962440941
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Internal Medicine Physician
- License
- G43841
- Practice address
- 2501 Ocean Ave
San Francisco, CA 94143-0001 - Phone
- (415) 750-6625
- Fax
- (415) 750-6641
- NPI assigned
- Jun 3, 2006
- Sex
- Male
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Internal Medicine Physician | 207R00000X | G43841 | CA | Primary |
| Geriatric Medicine (Internal Medicine) Physician | 207RG0300X | G43841 | CA |
Addresses
Primary practice location
2501 Ocean Ave
San Francisco, CA 94143-0001
Mailing address
1635 Divisadero Street
Suite 625, Box 1821
San Francisco, CA 94143-0001
Phone (415) 476-4029
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 00G438410 | Medicaid | CA |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
- Eligible to order & refer
- Part B services: No
- Medical equipment: Yes
- Home health: No
- Power mobility devices: Yes
- Hospice: No
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| University of Alabama Health Services Foundation, PC. | Current | Accepting new patients |
Locations
619 19th St S
Birmingham, AL 35249
619 19th St S
Birmingham, AL 35233
Phone (205) 934-6405
Interoperability endpoints
- clandefeld@direct.uabmedicine.org
Organizations & group practices 1
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.
-
- Multi-Specialty Clinic/Center
- Birmingham, AL
- NPI 1093768723
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1149292800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1757548800000",
"number": "1962440941",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1635 DIVISADERO STREET",
"address_2": "SUITE 625, BOX 1821",
"city": "SAN FRANCISCO",
"state": "CA",
"postal_code": "941430001",
"telephone_number": "415-476-4029",
"fax_number": "415-476-4150"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "2501 OCEAN AVE",
"city": "SAN FRANCISCO",
"state": "CA",
"postal_code": "941430001",
"telephone_number": "415-750-6625",
"fax_number": "415-750-6641"
}
],
"practiceLocations": [],
"basic": {
"last_name": "LANDEFELD",
"first_name": "CHARLES",
"middle_name": "S.",
"name_prefix": "Dr.",
"credential": "M.D.",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2006-06-03",
"last_updated": "2025-09-11",
"status": "A"
},
"taxonomies": [
{
"code": "207R00000X",
"taxonomy_group": "",
"desc": "Internal Medicine",
"state": "CA",
"license": "G43841",
"primary": true
},
{
"code": "207RG0300X",
"taxonomy_group": "",
"desc": "Internal Medicine, Geriatric Medicine",
"state": "CA",
"license": "G43841",
"primary": false
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "00G438410",
"state": "CA"
}
],
"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 Sep 11, 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.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.