Active NPI
Janice Helfand, PH.D.
- Psychologist
- Walnut Creek, CA
National Provider Identifier
1770655854
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Psychologist
- License
- PSY 19349
- Practice address
- 1200 Mt Diablo Blvd Ste 402
Walnut Creek, CA 94596-4890 - Phone
- (808) 990-2565
- NPI assigned
- Nov 14, 2006
- 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 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Psychologist | 103T00000X | PSY 19349 | CA | Primary |
Addresses
Primary practice location
1200 Mt Diablo Blvd Ste 402
Walnut Creek, CA 94596-4890
Mailing address
PO Box 2136
Walnut Creek, CA 94595-0136
Phone (808) 990-2565
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)
- Enrolled
- Credentials
- Doctor of Philosophy
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| PSY 19349 | CA | MD | Psychologist |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1163462400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1773878400000",
"number": "1770655854",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "PO BOX 2136",
"city": "WALNUT CREEK",
"state": "CA",
"postal_code": "945950136",
"telephone_number": "808-990-2565"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1200 MT DIABLO BLVD STE 402",
"city": "WALNUT CREEK",
"state": "CA",
"postal_code": "945964890",
"telephone_number": "808-990-2565"
}
],
"practiceLocations": [],
"basic": {
"last_name": "HELFAND",
"first_name": "JANICE",
"name_prefix": "Dr.",
"credential": "PH.D.",
"sole_proprietor": "YES",
"sex": "F",
"enumeration_date": "2006-11-14",
"last_updated": "2026-03-19",
"certification_date": "2026-03-19",
"status": "A"
},
"taxonomies": [
{
"code": "103T00000X",
"taxonomy_group": "",
"desc": "Psychologist",
"state": "CA",
"license": "PSY 19349",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Walnut Creek, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 19, 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.