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DR. SETH M WILLIAMS M.D.
NPI 1093038986
Pediatrics in Corvallis, OR

Active since March 05, 2010PECOS Enrolled
777 NW 9TH ST STE 320, CORVALLIS, OR 97330(541) 768-4900 Get Directions Write a Review

NPPES record last updated: December 20, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Seth M Williams M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. SETH M WILLIAMS M.D. (NPI 1093038986) is an individual pediatrics provider in Corvallis, Oregon, licensed in Oregon (MD158582) and active in the NPI registry since March 2010. He is enrolled in Medicare PECOS and maintains a secondary practice location in Portland.

NPPES Registry Identity

NPI1093038986
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameDR. SETH M WILLIAMSCredential: M.D.
Location Address777 NW 9TH ST STE 320Corvallis, OR 97330-6169
Mailing AddressPo Box 1189Corvallis, OR 97339-1189
Phone(541) 768-4900
Sole ProprietorNo
Enumeration DateMarch 5, 2010
Last NPPES UpdateDecember 20, 2021
NPPES CertifiedDecember 20, 2021
✔ NPI 1093038986 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in OR · MD158582
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
777 NW 9TH ST STE 320, Corvallis, OR 97330
Open in Google Maps ↗

Secondary Practice Location 1

Location 12801 N. Gantenbein Legacy Emanuel Medical Center, Randall Children's HospitalPortland, OR 97227 · Phone (503) 415-5403

Other Identifiers 1

OtherMD158582OR · Oregon License Number

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include BridgeSpan Health Company, Moda Health Plan, Inc., PacificSource Health Plans and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Seth M Williams M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show Seth Williams reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Good Samaritan Hospital Corvallis
Same address
Family Medicine
777 NW 9TH ST STE 320
Corvallis, OR 97330
  • Reassigned Medicare billing, Oregon enrollment
  • 522 clinicians in this Medicare group
NPI 1821671520 (541) 768-5142
Multnomah County
71 mi
Public Health, State or Local
3653 SE 34TH AVE
Portland, OR 97202
  • Reassigned Medicare billing, Oregon enrollment
  • 215 clinicians in this Medicare group
NPI 1720126816 (503) 988-7462
Mckenzie Physician Services LLC
1,997 mi
General Practice
1573 MALLORY LN STE 100
Brentwood, TN 37027
  • Reassigned Medicare billing, Oregon enrollment
  • 198 clinicians in this Medicare group
NPI 1316909054 (152) 221-1400

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 97330 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$84.82 typical visit price
range $54.96 – $166.64
Typical copayment $21.20 (range $13.74 – $41.66)
Most-billed visit code 99203
Established Patient
$97.16 typical visit price
range $17.68 – $136.19
Typical copayment $24.29 (range $4.42 – $34.04)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 12

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

RACHEL WAKEFIELD PSYD
Psychologist (Health)
777 NW 9TH ST STE 320
CORVALLIS, OR 97330
Benton County (541) 768-1840
KRISTINA BARNES DO
Family Medicine
777 NW 9TH ST STE 320
CORVALLIS, OR 97330
Benton County (541) 768-1840
DR. EMILY KATHERINE BALSER MD
Family Medicine
777 NW 9TH ST STE 320
CORVALLIS, OR 97330
Benton County (541) 768-1840
MEGHAN E. WOOD DO
Family Medicine
777 NW 9TH ST STE 320
CORVALLIS, OR 97330
Benton County (541) 768-1840
BRANDI L BOLLER DO
Family Medicine
777 NW 9TH ST STE 320
CORVALLIS, OR 97330
Benton County (541) 768-1840
TATIANA ZUPEKAN BRINCKERHOFF M.D.
Pediatrics
777 NW 9TH ST STE 320
CORVALLIS, OR 97330
Benton County (541) 768-4900
KIMBERLY MARIE ISZLER RD
Dietitian, Registered
777 NW 9TH ST STE 320
CORVALLIS, OR 97330
Benton County (541) 768-4900
SARAH DE FOREST MD
Family Medicine
777 NW 9TH ST STE 320
CORVALLIS, OR 97330
Benton County (541) 768-1840

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 1093038986. It was assigned to this individual provider in the NPPES registry on March 5, 2010.

Where is Seth Williams located?

Seth Williams practices at 777 NW 9th St Ste 320, Corvallis, OR 97330. The listed phone number is (541) 768-4900.

What is Seth Williams's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Seth Williams enrolled in Medicare?

Yes. Seth Williams is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Seth Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Seth Williams reassigns Medicare benefits to 3 organizations: Good Samaritan Hospital Corvallis (Corvallis, OR), Multnomah County (Portland, OR) and Mckenzie Physician Services LLC (Brentwood, TN). Each 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 December 20, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.