Active NPI
Mark Downey, PH.D.
- Clinical Psychologist
- Riverside, CA
National Provider Identifier
1619646395
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Clinical Psychologist
- License
- 36676
- Practice address
- 5005 Canyon Crest Dr
Riverside, CA 92507-7721 - Phone
- (747) 224-2090
- NPI assigned
- Sep 7, 2021
- 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 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Clinical Psychologist | 103TC0700X | 36676 | CA | Primary |
Addresses
Primary practice location
5005 Canyon Crest Dr
Riverside, CA 92507-7721
Mailing address
3004 Meridian St
Bellingham, WA 98225-1724
Phone (818) 934-1404
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
- Doctor of Philosophy
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 36676 | CA | MD | Clinical Psychologist |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1630972800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1779062400000",
"number": "1619646395",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "3004 MERIDIAN ST",
"city": "BELLINGHAM",
"state": "WA",
"postal_code": "982251724",
"telephone_number": "818-934-1404"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "5005 CANYON CREST DR",
"city": "RIVERSIDE",
"state": "CA",
"postal_code": "925077721",
"telephone_number": "747-224-2090"
}
],
"practiceLocations": [],
"basic": {
"last_name": "DOWNEY",
"first_name": "MARK",
"name_prefix": "Dr.",
"credential": "PH.D.",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2021-09-07",
"last_updated": "2026-05-18",
"certification_date": "2026-05-18",
"status": "A"
},
"taxonomies": [
{
"code": "103TC0700X",
"taxonomy_group": "",
"desc": "Psychologist, Clinical",
"state": "CA",
"license": "36676",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Riverside, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 18, 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.