Active NPI
Sheri L Task, M.D.
- Obstetrics & Gynecology Physician
- Hayward, CA
National Provider Identifier
1124063789
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Obstetrics & Gynecology Physician
- License
- G79269
- Practice address
- 27212 Calaroga Ave
Hayward, CA 94545-4339 - Phone
- (510) 785-5000
- Fax
- (510) 784-2402
- NPI assigned
- Jun 18, 2006
- 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 |
|---|---|---|---|---|
| Obstetrics & Gynecology Physician | 207V00000X | G79269 | CA | Primary |
Addresses
Primary practice location
27212 Calaroga Ave
Hayward, CA 94545-4339
Mailing address
27212 Calaroga Ave
Hayward, CA 94545-4339
Phone (510) 785-5000
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
- Opted out of Medicare
- Previously, effective Aug 6, 2020 through Aug 6, 2026
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 79269 | CA | MD | Social Worker |
| G79269 | CA | MD | Obstetrics & Gynecology Physician |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1150588800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1124063789",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "27212 CALAROGA AVE",
"city": "HAYWARD",
"state": "CA",
"postal_code": "945454339",
"telephone_number": "510-785-5000",
"fax_number": "510-784-2402"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "27212 CALAROGA AVE",
"city": "HAYWARD",
"state": "CA",
"postal_code": "945454339",
"telephone_number": "510-785-5000",
"fax_number": "510-784-2402"
}
],
"practiceLocations": [],
"basic": {
"last_name": "TASK",
"first_name": "SHERI",
"middle_name": "L",
"name_prefix": "Dr.",
"credential": "M.D.",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2006-06-18",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "207V00000X",
"taxonomy_group": "",
"desc": "Obstetrics & Gynecology",
"state": "CA",
"license": "G79269",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Hayward, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Opt Out Affidavits.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.