Active NPI
Ovester Armstrong Jr.
- Health Service Clinic/Center
- San Francisco, CA
National Provider Identifier
1467919324
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Health Service Clinic/Center
- Practice address
- 3575 Geary Blvd
San Francisco, CA 94118-3212 - Phone
- (415) 750-4111
- NPI assigned
- Feb 27, 2019
- Last updated
- Jun 30, 2026
- Sex
- Male
- Sole proprietor
- Yes
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Health Service Clinic/Center | 261QH0100X | Primary |
Addresses
Primary practice location
3575 Geary Blvd
San Francisco, CA 94118-3212
Mailing address
869 Winnipeg CT
Tracy, CA 95304-5823
Phone (510) 846-0655
Other practice location 1
3801 Miranda Ave # 5A
Palo Alto, CA 94304-1207
Phone (651) 694-6000
Other practice location 2
1 Washington Sq
San Jose, CA 95192-1001
Phone (408) 924-5678
Other practice location 3
7777 E Freedom Rd
French Camp, CA 95231-9694
Phone (209) 946-3400
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 777857785 | Medicaid | CA |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Not enrolled
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1551225600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1782777600000",
"number": "1467919324",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "869 WINNIPEG CT",
"city": "TRACY",
"state": "CA",
"postal_code": "953045823",
"telephone_number": "510-846-0655"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "3575 GEARY BLVD",
"city": "SAN FRANCISCO",
"state": "CA",
"postal_code": "941183212",
"telephone_number": "415-750-4111"
}
],
"practiceLocations": [
{
"address_1": "3801 Miranda Ave # 5A",
"address_purpose": "LOCATION",
"city": "Palo Alto",
"state": "CA",
"postal_code": "943041207",
"country_code": "US",
"telephone_number": "651-694-6000",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "1 Washington Sq",
"address_purpose": "LOCATION",
"city": "San Jose",
"state": "CA",
"postal_code": "951921001",
"country_code": "US",
"telephone_number": "408-924-5678",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "7777 E Freedom Rd",
"address_purpose": "LOCATION",
"city": "French Camp",
"state": "CA",
"postal_code": "952319694",
"country_code": "US",
"telephone_number": "209-946-3400",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "ARMSTRONG",
"first_name": "OVESTER",
"name_suffix": "Jr.",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2019-02-27",
"last_updated": "2026-06-30",
"certification_date": "2026-06-30",
"status": "A"
},
"taxonomies": [
{
"code": "261QH0100X",
"taxonomy_group": "",
"desc": "Clinic/Center, Health Service",
"state": null,
"license": null,
"primary": true
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "777857785",
"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 Jun 30, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.