Active NPI
Darwin Derosans
- Day Training/Habilitation Specialist
- Concord, CA
National Provider Identifier
1205523784
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Day Training/Habilitation Specialist
- Practice address
- 1420 Willow Pass Rd # 200
Concord, CA 94520-5823 - Phone
- (415) 367-5691
- NPI assigned
- Apr 24, 2023
- Sex
- Male
- Sole proprietor
- No
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 |
|---|---|---|---|---|
| Peer Specialist | 175T00000X | |||
| Day Training/Habilitation Specialist | 373H00000X | Primary |
Addresses
Primary practice location
1420 Willow Pass Rd # 200
Concord, CA 94520-5823
Mailing address
1420 Willow Pass Rd Ste 200
Concord, CA 94520-5823
Phone (925) 646-5480
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": "1682294400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1752192000000",
"number": "1205523784",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1420 WILLOW PASS RD STE 200",
"city": "CONCORD",
"state": "CA",
"postal_code": "945205823",
"telephone_number": "925-646-5480"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1420 WILLOW PASS RD # 200",
"city": "CONCORD",
"state": "CA",
"postal_code": "945205823",
"telephone_number": "415-367-5691"
}
],
"practiceLocations": [],
"basic": {
"last_name": "DEROSANS",
"first_name": "DARWIN",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2023-04-24",
"last_updated": "2025-07-11",
"certification_date": "2025-07-11",
"status": "A"
},
"taxonomies": [
{
"code": "175T00000X",
"taxonomy_group": "",
"desc": "Peer Specialist",
"state": null,
"license": null,
"primary": false
},
{
"code": "373H00000X",
"taxonomy_group": "",
"desc": "Day Training/Habilitation Specialist",
"state": null,
"license": null,
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Concord, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 11, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.