Doctor profile · Federal record

Dr. Seth Williams, PSYD

Clinical Psychologist · Clinical Psychologist · Tigard, OR

  • NPI 1851331599
  • Accepts Medicare
  • 23 yrs in practice
  • Licensed in 2 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
12442 Sw Scholls Ferry RD, Suite 106
Tigard, OR 972230803
(503) 216-9200
Mailing address
Po Box 3158
Portland, OR 972083158

Credentials & registration

NPPES · NUCC
NPI registered
June 2006 — 20 yrs on file
Profile last updated
August 1, 2013
Year of graduation
2003 — 23 yrs since
Specialty taxonomy
103TC0700X — NUCC code
State licenses (2)
Oregon #2227 · Minnesota #4633
Medicaid
MN #729458100

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1851331599. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
416
Distinct HCPCS
3
Medicare allowed
$40,847
HCPCS Description Services Patients Avg allowed
90837 Psychotherapy, 1 hour 269 28 $133
90785 Psychiatric services complicated by communication factor 126 25 $14
90791 Psychiatric diagnostic evaluation 21 19 $156

In context: peer comparison

Among 1 peers in Tigard Clinical Psychologist, average services per provider: 138. This provider delivers 3.0× the peer median.

Frequently asked questions

Auto-generated from federal data
What is Dr. Seth Williams's medical specialty?
Dr. Seth Williams practices Clinical Psychologist in Tigard, OR.
Where does Dr. Seth Williams practice?
Dr. Seth Williams practices at 12442 Sw Scholls Ferry RD, Tigard, OR 972230803. Office phone: 5032169200.
What is Dr. Seth Williams's NPI?
Dr. Seth Williams's National Provider Identifier (NPI) is 1851331599, issued by NPPES.
Does Dr. Seth Williams accept Medicare assignment?
Yes. Dr. Seth Williams accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Seth Williams commonly perform?
Top Medicare-reported procedures in 2023: Psychotherapy (HCPCS 90837); Psychiatric services complicated by communication factor (HCPCS 90785); Psychiatric diagnostic evaluation (HCPCS 90791). Source: CMS Medicare Physician & Other Practitioners file.