Active NPI
Kristen Elizabeth Mengwasser
- Rheumatology Physician
- San Francisco, CA
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Rheumatology Physician
- License
- A180354
- Practice address
- 1001 Potrero Avenue BLDG 90 FL2
San Francisco, CA 94110 - Phone
- (628) 206-4777
- Fax
- (628) 206-4257
- NPI assigned
- Mar 27, 2020
- 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 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Internal Medicine Physician | 207R00000X | A180354 | CA | |
| Rheumatology Physician | 207RR0500X | A180354 | CA | Primary |
Addresses
Primary practice location
1001 Potrero Avenue BLDG 90 FL2
San Francisco, CA 94110
Mailing address
PO Box 743749
Los Angeles, CA 90074-3749
Phone (415) 514-3000
Other practice location 1
75 Francis St
Boston, MA 02115-6110
Phone (617) 732-5500
Electronic endpoints 1
| Type | Endpoint | Use | Affiliation |
|---|---|---|---|
| Direct Messaging Address | kristen_mengwasser@dfci.harvard.edu | Direct |
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
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Rheumatology
- Education
- Harvard Medical School, 2020
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
2540 23Rd St
FL 4
San Francisco, CA 94143-2500
Phone (628) 206-4777
Hospital & facility affiliations
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| A180354 | CA | MD | Rheumatology Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Eddii Care PLLC | Current | Accepting new patients | |
| City & County of San Francisco | Current | Accepting new patients | |
| Regents of the University of California | Internal Medicine | Current | Accepting new patients |
| City & County of San Francisco | Current | Accepting new patients | |
| University of California SFGH Medical Group | Current | Accepting new patients | |
| UCSF Medical Group Business Services | Internal Medicine | Current | Accepting new patients |
| UCSF Medical Group Business Services | Current | Accepting new patients | |
| University of California SFGH Medical Group | Current | Accepting new patients | |
| City and County of San Francisco | Current | Accepting new patients | |
| University of California San Francisco | Current | Accepting new patients | |
| University of California SFGH Medical Group | Internal Medicine | Current | Accepting new patients |
| University of California San Francisco | Current | Accepting new patients | |
| Regents of the University of California | Rheumatology | Past | Accepting new patients |
| University of California San Francisco Medical Center | Past | Accepting new patients |
Locations
400 Parnassus Ave
#A632
San Francisco, CA 94143
Phone (415) 473-1000
400 Parnassus Ave
Ste A94
San Francisco, CA 94143
1001 Potrero Ave
Rm 5H22
San Francisco, CA 94110
Phone (628) 206-4774
1001 Potrero Ave
San Francisco, CA 94110
Phone (415) 206-2305
2001 The Embarcadero
Ofc Of
San Francisco, CA 94143
Phone (628) 224-5503
2540 23rd St
Fl 4
San Francisco, CA 94143
Phone (628) 206-4777
505 Parnassus Ave
#M1480
San Francisco, CA 94143
Phone (415) 476-1528
1001 Potrero Ave
Bldg 90
San Francisco, CA 94110
Phone (415) 206-8680
505 Parnassus Ave
San Francisco, CA 94143
Phone (415) 476-9058
2330 Post St
San Francisco, CA 94115
Phone (415) 502-4444
Interoperability endpoints
- kmengwasser243164@direct-ucsfmedicalcenter.org
Organizations & group practices 14
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.
-
dba UCSF SFGH Medical Group Dept of Otolaryngology
- Otolaryngology Physician
- San Francisco, CA
- NPI 1154396208
-
dba San Francisco Public Health Laboratory
- Clinical Medical Laboratory
- San Francisco, CA
- NPI 1982737524
-
dba UCSF Dept of Medicine General Medicine
- Internal Medicine Physician
- San Francisco, CA
- NPI 1760552343
-
- Internal Medicine Physician
- San Francisco, CA
- NPI 1477624104
-
dba UCSF Pediatrics Group
- Pediatrics Physician
- San Francisco, CA
- NPI 1861578973
-
dba eddii-Care
- Endocrinology, Diabetes & Metabolism Physician
- Houston, TX
- NPI 1518768845
-
dba CCSF DPH Multi - Practice Medical Group
- Community Health/Public Health Clinical Nurse Specialist
- San Francisco, CA
- NPI 1609041060
-
dba DSAAM OTOP Methadone Maintenance
- Methadone Clinic
- San Francisco, CA
- NPI 1578787925
-
dba UCSF Orthotic and Prosthetic Center - Gateway Medical Building
- Health Service Clinic/Center
- San Francisco, CA
- NPI 1194115246
-
dba UCSF Outpatient Pharmacy at Parnassus
- Community/Retail Pharmacy
- San Francisco, CA
- NPI 1659141711
-
dba UCSF SFGH Medical Group Division of Vascular Surgery
- Vascular Surgery Physician
- San Francisco, CA
- NPI 1033913959
-
dba UCSF SFGH Medical Group, Oncology Services
- Medical Oncology Physician
- San Francisco, CA
- NPI 1356696215
Internal Medicine
Hospital & facility affiliations 2
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
dba Zuckerberg San Francisco General Hospital and Trauma Center- Acute
- General Acute Care Hospital
- San Francisco, CA
- NPI 1083648810
-
dba Zuckerberg San Francisco General Hospital and Trauma Center - Acute
- General Acute Care Hospital
- San Francisco, CA
- NPI 1164609962
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": "1775520000000",
"number": "1841828720",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "PO BOX 743749",
"city": "LOS ANGELES",
"state": "CA",
"postal_code": "900743749",
"telephone_number": "415-514-3000",
"fax_number": "415-502-8175"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1001 POTRERO AVENUE BLDG 90 FL2",
"city": "SAN FRANCISCO",
"state": "CA",
"postal_code": "94110",
"telephone_number": "628-206-4777",
"fax_number": "628-206-4257"
}
],
"practiceLocations": [
{
"address_1": "75 Francis St",
"address_purpose": "LOCATION",
"city": "Boston",
"state": "MA",
"postal_code": "021156110",
"country_code": "US",
"telephone_number": "617-732-5500",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "MENGWASSER",
"first_name": "KRISTEN",
"middle_name": "ELIZABETH",
"sole_proprietor": "YES",
"sex": "F",
"enumeration_date": "2020-03-27",
"last_updated": "2026-04-07",
"certification_date": "2026-04-07",
"status": "A"
},
"taxonomies": [
{
"code": "207R00000X",
"taxonomy_group": "",
"desc": "Internal Medicine",
"state": "CA",
"license": "A180354",
"primary": false
},
{
"code": "207RR0500X",
"taxonomy_group": "",
"desc": "Internal Medicine, Rheumatology",
"state": "CA",
"license": "A180354",
"primary": true
}
],
"identifiers": [],
"endpoints": [
{
"endpointType": "DIRECT",
"endpointTypeDescription": "Direct Messaging Address",
"endpoint": "kristen_mengwasser@dfci.harvard.edu",
"affiliation": "N",
"use": "DIRECT",
"useDescription": "Direct",
"address_1": "75 Francis St",
"city": "Boston",
"state": "MA",
"country_code": "US",
"postal_code": "021156110",
"country_name": "United States",
"address_type": "DOM"
}
],
"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 Apr 7, 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.
- 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.