Active NPI
Mason Fries, PH.D.
- Clinical Psychologist
- Eugene, OR
National Provider Identifier
1326235151
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Clinical Psychologist
- License
- 2293
- Practice address
- 3780 Vine Maple St
Eugene, OR 97405-4459 - Phone
- (714) 566-5671
- NPI assigned
- Sep 25, 2007
- Sex
- Male
- 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 |
|---|---|---|---|---|
| Clinical Psychologist | 103TC0700X | 2293 | OR | Primary |
Addresses
Primary practice location
3780 Vine Maple St
Eugene, OR 97405-4459
Mailing address
3780 Vine Maple St
Eugene, OR 97405-4459
Phone (714) 566-5671
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 |
|---|---|---|---|
| 2293 | OR | MD | Clinical Psychologist |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1190678400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1787529600000",
"number": "1326235151",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "3780 VINE MAPLE ST",
"city": "EUGENE",
"state": "OR",
"postal_code": "974054459",
"telephone_number": "714-566-5671"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "3780 VINE MAPLE ST",
"city": "EUGENE",
"state": "OR",
"postal_code": "974054459",
"telephone_number": "714-566-5671"
}
],
"practiceLocations": [],
"basic": {
"last_name": "FRIES",
"first_name": "MASON",
"name_prefix": "Dr.",
"credential": "PH.D.",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2007-09-25",
"last_updated": "2026-08-24",
"status": "A"
},
"taxonomies": [
{
"code": "103TC0700X",
"taxonomy_group": "",
"desc": "Psychologist, Clinical",
"state": "OR",
"license": "2293",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Eugene, OR
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 24, 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.