1. Home
  2. Directory
  3. Washington
  4. Issaquah
  5. Physician Assistant
  6. NPI Profile

GRANT WINFIELD PA-C
NPI 1497560445
Physician Assistant in Issaquah, WA

Active since February 07, 2025PECOS Enrolled
18305 SE NEWPORT WAY APT H101, ISSAQUAH, WA 98027(440) 897-5505 Get Directions Write a Review

NPPES record last updated: February 7, 2025. Verified against the NPPES registry weekly; last sync: August 23, 2026.

About Grant Winfield Pa-c NPPES

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

GRANT WINFIELD PA-C (NPI 1497560445) is an individual physician assistant in Issaquah, Washington and active in the NPI registry since February 2025. He is enrolled in Medicare PECOS and is a graduate of Other (2024).

NPPES Registry Identity

NPI1497560445
Entity TypeIndividualMale
Primary Taxonomy363A00000X
Provider Legal NameGRANT WINFIELDCredential: PA-C
Location Address18305 SE NEWPORT WAY APT H101Issaquah, WA 98027-7832
Mailing Address18305 Se Newport Way Apt H101Issaquah, WA 98027-7832 · (440) 897-5505
Phone(440) 897-5505
Sole ProprietorNo
Medical School CMSOtherGraduated 2024
Enumeration DateFebruary 7, 2025
NPPES CertifiedFebruary 7, 2025
✔ NPI 1497560445 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
Definition
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
18305 SE NEWPORT WAY APT H101, Issaquah, WA 98027
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource, MedMutual, Oscar Health Insurance.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Grant Winfield Pa-c is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID4587172739
PECOS Enrollment IDI20250731001540
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98027 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
$97.43 typical visit price
range $63.67 – $189.37
Typical copayment $24.35 (range $15.91 – $47.34)
Most-billed visit code 99203
Established Patient
$78.74 typical visit price
range $21.12 – $155.00
Typical copayment $19.68 (range $5.28 – $38.75)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Grant Winfield's NPI number?

The NPI number for Grant Winfield is 1497560445. It was assigned to this individual provider in the NPPES registry on February 7, 2025.

Where is Grant Winfield located?

Grant Winfield practices at 18305 SE Newport Way Apt H101, Issaquah, WA 98027. The listed phone number is (440) 897-5505.

What is Grant Winfield's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is Grant Winfield enrolled in Medicare?

Yes. Grant Winfield is registered in the Medicare PECOS enrollment system.

What insurance does Grant Winfield accept?

Health plans from CareSource, MedMutual and Oscar Health Insurance list Grant Winfield 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 Grant Winfield was last updated on February 7, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.