Active NPI
Madeleine Hu
- Gastroenterology Physician
- San Francisco, CA
National Provider Identifier
1841940996
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Gastroenterology Physician
- License
- A188035
- Practice address
- 505 Parnassus Ave
San Francisco, CA 94143-2204 - Phone
- (415) 476-1529
- NPI assigned
- Mar 23, 2022
- Sex
- Female
- 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 | A188035 | CA | |
| Gastroenterology Physician | 207RG0100X | A188035 | CA | Primary |
Addresses
Primary practice location
505 Parnassus Ave
San Francisco, CA 94143-2204
Mailing address
505 Parnassus Avenue
Room M-1480, Box 0119
San Francisco, CA 94143
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
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| A188035 | CA | MD | Gastroenterology Physician |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1647993600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1779667200000",
"number": "1841940996",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "505 PARNASSUS AVENUE",
"address_2": "ROOM M-1480, BOX 0119",
"city": "SAN FRANCISCO",
"state": "CA",
"postal_code": "94143"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "505 PARNASSUS AVE",
"city": "SAN FRANCISCO",
"state": "CA",
"postal_code": "941432204",
"telephone_number": "415-476-1529"
}
],
"practiceLocations": [],
"basic": {
"last_name": "HU",
"first_name": "MADELEINE",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2022-03-23",
"last_updated": "2026-05-25",
"certification_date": "2026-05-25",
"status": "A"
},
"taxonomies": [
{
"code": "207R00000X",
"taxonomy_group": "",
"desc": "Internal Medicine",
"state": "CA",
"license": "A188035",
"primary": false
},
{
"code": "207RG0100X",
"taxonomy_group": "",
"desc": "Internal Medicine, Gastroenterology",
"state": "CA",
"license": "A188035",
"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 25, 2026; 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.