Active NPI
Sarah Koster, NP
- School Nurse Practitioner
- Oakland, CA
National Provider Identifier
1922966605
On this page
Key facts
NPPES NPI Registry- Primary specialty
- School Nurse Practitioner
- License
- 95013269
- Practice address
- 2135 7TH Ave
Oakland, CA 94606-1910 - Phone
- (505) 967-5432
- NPI assigned
- Jan 12, 2026
- 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 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| School Nurse Practitioner | 363LS0200X | 95013269 | CA | Primary |
Addresses
Primary practice location
2135 7TH Ave
Oakland, CA 94606-1910
Mailing address
2135 7TH Ave
Oakland, CA 94606-1910
Phone (505) 967-5432
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
- Credentials
- Nurse Practitioner
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 95013269 | CA | MD | School Nurse Practitioner |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1768176000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1768176000000",
"number": "1922966605",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "2135 7TH AVE",
"city": "OAKLAND",
"state": "CA",
"postal_code": "946061910",
"telephone_number": "505-967-5432"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "2135 7TH AVE",
"city": "OAKLAND",
"state": "CA",
"postal_code": "946061910",
"telephone_number": "505-967-5432"
}
],
"practiceLocations": [],
"basic": {
"last_name": "KOSTER",
"first_name": "SARAH",
"credential": "NP",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2026-01-12",
"last_updated": "2026-01-12",
"certification_date": "2026-01-12",
"status": "A"
},
"taxonomies": [
{
"code": "363LS0200X",
"taxonomy_group": "",
"desc": "Nurse Practitioner, School",
"state": "CA",
"license": "95013269",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Oakland, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 12, 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.