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JAMES D RALSTON
NPI 1164565164
Internal Medicine in Seattle, WA

Active since February 15, 2007PECOS Enrolled
201 16TH AVE E, SEATTLE, WA 98112(206) 326-3000 Get Directions Write a Review

NPPES record last updated: May 4, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About James D Ralston NPPES

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

JAMES D RALSTON (NPI 1164565164) is an individual internal medicine provider in Seattle, Washington, licensed in Washington (MD00034187) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS and maintains a secondary practice location in Redmond.

NPPES Registry Identity

NPI1164565164
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameJAMES D RALSTON
Location Address201 16TH AVE ESeattle, WA 98112-5226
Mailing Address201 16th Ave ESeattle, WA 98112-5226 · (206) 326-3000
Phone(206) 326-3000
Sole ProprietorNo
Enumeration DateFebruary 15, 2007
Last NPPES UpdateMay 4, 2021
NPPES CertifiedMay 4, 2021
✔ NPI 1164565164 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in WA · MD00034187
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedHospitalistTaxonomy 208M00000X · License MD00034187 (WA)
201 16TH AVE E, Seattle, WA 98112
Open in Google Maps ↗

Secondary Practice Location 1

Location 12701 156th Ave NERedmond, WA 98052-5513 · Phone (425) 883-5020

Other Identifiers 1

Medicaid8235855WA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

James D Ralston 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 Reassignment

Medicare enrollment records show James Ralston reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Kaiser Foundation Health Plan Of Washington
1.2 mi
Multi-Specialty
320 WESTLAKE AVE. N., SUITE 100
Seattle, WA 98109
  • Reassigned Medicare billing, Washington enrollment
  • 2,678 clinicians in this Medicare group
NPI 1396810701 (206) 448-6561

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 98112 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
$143.76 typical visit price
range $63.67 – $189.37
Typical copayment $35.94 (range $15.91 – $47.34)
Most-billed visit code 99204
Established Patient
$111.00 typical visit price
range $21.12 – $155.00
Typical copayment $27.75 (range $5.28 – $38.75)
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 20

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

DR. MICHAEL DONG CHO M.D.
Internal Medicine (Rheumatology)
201 16TH AVE E
SEATTLE, WA 98112
King County (206) 326-3000
MRS. MELAINE MENDOZA ROMAN OTRP, OTR/L
Occupational Therapist
201 16TH AVE E
SEATTLE, WA 98112
King County (206) 326-4545
NHI LUAN TAN
Student in an Organized Health Care Education/Training Program
201 16TH AVE E
SEATTLE, WA 98112
King County (206) 326-3000
GROUP HEALTH COOPERATIVE
Clinic/Center (Ambulatory Surgical)
201 16TH AVE E, SUITE CMB-2
SEATTLE, WA 98112
King County (206) 326-2107
JOYCE KRISTINE AQUINO
Registered Nurse (Home Health)
201 16TH AVE E
SEATTLE, WA 98112
King County (206) 326-4545
KIMBERLY DAWN GRASSMAN
Home Health Aide
201 16TH AVE E
SEATTLE, WA 98112
King County (206) 635-1668
GARRETT KOBAYASHI PHARMD
Pharmacist
201 16TH AVE E
SEATTLE, WA 98112
King County (206) 326-2880
TAYLAR GALLUP OTR/L
Occupational Therapist
201 16TH AVE E
SEATTLE, WA 98112
King County (877) 751-2446

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 James Ralston's NPI number?

The NPI number for James Ralston is 1164565164. It was assigned to this individual provider in the NPPES registry on February 15, 2007.

Where is James Ralston located?

James Ralston practices at 201 16th Ave E, Seattle, WA 98112. The listed phone number is (206) 326-3000.

What is James Ralston's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is James Ralston enrolled in Medicare?

Yes. James Ralston is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for James Ralston's services?

According to the CMS Revalidation Reassignment List (October 2026 release), James Ralston reassigns Medicare benefits to Kaiser Foundation Health Plan Of Washington (Seattle, WA). 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 James Ralston's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for James Ralston was last updated on May 4, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.