DR. SETH SATURN WILLIAMS PSYD
NPI 1851331599
Psychologist - Clinical in Tigard, OR
About Dr. Seth Saturn Williams Psyd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SETH SATURN WILLIAMS PSYD (NPI 1851331599) is an individual clinical provider in Tigard, Oregon, licensed in Oregon (2227) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and is a graduate of Other (2003).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 3
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Seth Saturn Williams Psyd is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Seth Williams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Lake Oswego, OR 97035
- Reassigned Medicare billing, Oregon enrollment
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 97223 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
TIGARD, OR 97223
TIGARD, OR 97223
TIGARD, OR 97223
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Seth Williams's NPI number?
The NPI number for Seth Williams is 1851331599. It was assigned to this individual provider in the NPPES registry on June 8, 2006. The provider is also known as Seth Saturn.
Where is Seth Williams located?
Seth Williams practices at 12442 SW Scholls Ferry Rd Suite 106, Tigard, OR 97223. The listed phone number is (503) 216-9200.
What is Seth Williams's specialty?
The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.
Is Seth Williams enrolled in Medicare?
Yes. Seth Williams is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Seth Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Seth Williams reassigns Medicare benefits to Seth S Williams Psyd LLC (Lake Oswego, OR). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Seth Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Seth Williams accept?
Health plans from BridgeSpan Health Company, Moda Health Plan, Inc., PacificSource Health Plans, Providence Health Plan and Regence BlueCross BlueShield of Oregon list Seth Williams as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Seth Williams was last updated on August 1, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Seth Saturn Williams, PSYD · NPI 1851331599
Clinical provider in Tigard, Oregon. Individual provider, active in the CMS NPPES registry since June 8, 2006.
## Identity
- **NPI:** 1851331599 (Entity type: Individual)
- **Enumerated:** June 8, 2006
- **Primary specialty:** Psychologist - Clinical · taxonomy 103TC0700X
- **State license:** 2227 (Oregon)
- **Sole proprietor:** No
## Practice location
- **Address:** 12442 SW SCHOLLS FERRY RD, SUITE 106, Tigard, OR 97223-0803
- **Phone:** (503) 216-9200
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Seth S Williams Psyd LLC (NPI 1548710148, Lake Oswego, OR), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2003
## Record status
- **NPPES last updated:** August 1, 2013
- **Other identifiers:** Other HP58055 (MN); Other 311P4WI (MN); Medicaid 729458100 (MN)
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Source: [NPI Profile](https://npiprofile.com/npi/1851331599) · Data from the CMS NPPES public registry.