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WILLIAM FORSYTHE, DO, PLLC
NPI 1003143652
Emergency Medicine - Emergency Medical Services in Kennewick, WA

Active since November 03, 2009
8656 W GAGE BLVD STE A106, KENNEWICK, WA 99336(509) 366-2108 Get Directions Write a Review

NPPES record last updated: November 21, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About William Forsythe, Do, Pllc NPPES

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

WILLIAM FORSYTHE, DO, PLLC (NPI 1003143652) is a healthcare organization registered as an emergency medical services in Kennewick, Washington and active in the NPI registry since November 2009. The organization lists William Charles Forsythe, Owner, as its authorized official.

NPPES Registry Identity

NPI1003143652
Entity TypeOrganization
Primary Taxonomy207PE0004X
Legal Business NameWILLIAM FORSYTHE, DO, PLLC
Location Address8656 W GAGE BLVD STE A106Kennewick, WA 99336-1150
Mailing Address8656 W Gage Blvd Ste A106Kennewick, WA 99336-1150 · (509) 366-2108 · Fax (217) 355-8347
Phone(509) 366-2108
Organization SubpartNo
Authorized OfficialWilliam Charles ForsytheOwner · (509) 460-1065
Enumeration DateNovember 3, 2009
Last NPPES UpdateNovember 21, 2025
NPPES CertifiedNovember 21, 2025
✔ NPI 1003143652 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyEmergency Medicine · Emergency Medical ServicesAllopathic & Osteopathic Physicians
Taxonomy Code207PE0004X
Definition
An emergency medicine physician who specializes in non-hospital based emergency medical services (e.g., disaster site, accident scene, transport vehicle, etc.) to provide pre-hospital assessment, treatment, and transport patients.
Also ListedFamily Medicine · Geriatric MedicineTaxonomy 207QG0300X
8656 W GAGE BLVD STE A106, Kennewick, WA 99336
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Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Premera Blue Cross Blue Shield of Alaska.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

William Forsythe, Do, Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

4

Medicare enrollment records show 4 clinicians reassign Medicare billing to William Forsythe, Do, PLLC, which bills Medicare for the services they deliver. Of these, 2 practice within 10 miles. They are listed nearest first.

Clinicians, nearest first (4)

William Forsythe, DO
Emergency Medicine
NPI 1982643565
415 N MORAIN ST
Kennewick, WA 99336
(509) 735-6900
✔ PECOS✔ Accepts Medicare3.5 mi
Philip Ondara, ARNP
Nurse Practitioner
NPI 1639611957
2564 QUEENSGATE DR STE 2580
Richland, WA 99352
(509) 942-2355
✔ PECOS✔ Accepts Medicare3.9 mi
Randi Nielsen, APRN
Nurse Practitioner
NPI 1437530656
595 NW 11TH ST
Hermiston, OR 97838
(541) 567-2536
✔ PECOS✔ Accepts Medicare27 mi
Cindy Reed, ARNP, RN
Nurse Practitioner
NPI 1770940322
210 GOVERNMENT RD
Mattawa, WA 99349
(509) 932-4499
✔ PECOS47 mi

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

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 William Forsythe, Do, PLLC's NPI number?

The NPI number for William Forsythe, Do, PLLC is 1003143652. It was assigned to this organization in the NPPES registry on November 3, 2009.

Where is William Forsythe, Do, PLLC located?

William Forsythe, Do, PLLC is located at 8656 W Gage Blvd Ste A106, Kennewick, WA 99336. The listed phone number is (509) 366-2108.

What is William Forsythe, Do, PLLC's specialty?

The primary specialty registered for this NPI is Emergency Medicine, specializing in Emergency Medical Services, with taxonomy code 207PE0004X.

Is William Forsythe, Do, PLLC enrolled in Medicare?

Yes. William Forsythe, Do, PLLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through William Forsythe, Do, PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 4 clinicians in 2 Medicare specialties reassign their Medicare billing to William Forsythe, Do, PLLC. A 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 the clinician's services. The largest specialties are Nurse Practitioner (3) and Emergency Medicine (1). Of these, 2 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does William Forsythe, Do, PLLC accept?

Health plans from Premera Blue Cross Blue Shield of Alaska list William Forsythe, Do, PLLC 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 William Forsythe, Do, PLLC was last updated on November 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months 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.