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KEI YOSHIMATSU M.D.
NPI 1487072203
Psychiatry & Neurology - Psychiatry in Seattle, WA

Active since March 29, 2014PECOS EnrolledAccepts Medicare Assignment
80.58/100
CMS Quality Rating
325 9TH AVE, SEATTLE, WA 98104(206) 744-9696(206) 744-9914 Get Directions Write a Review

NPPES record last updated: September 26, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 26, 2024, Aug 7, 2024 (2 updates tracked since 2024).

About Kei Yoshimatsu M.d. NPPES

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

KEI YOSHIMATSU M.D. (NPI 1487072203) is an individual psychiatry provider in Seattle, Washington, licensed in Washington (MD61538401) and active in the NPI registry since March 2014. He is enrolled in Medicare PECOS, is affiliated with Harborview Medical Center, and is a graduate of Other (2014).

NPPES Registry Identity

NPI1487072203
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameKEI YOSHIMATSUCredential: M.D.
Location Address325 9TH AVESeattle, WA 98104-2420
Mailing AddressPo Box 50095Seattle, WA 98145-5095 · (206) 520-5700
Phone(206) 744-9696
Fax(206) 744-9914
Sole ProprietorNo
Medical School CMSOtherGraduated 2014
Enumeration DateMarch 29, 2014
Last NPPES UpdateSeptember 26, 20242 updates tracked since enumeration
NPPES CertifiedSeptember 26, 2024
✔ NPI 1487072203 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in WA · MD61538401
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
325 9TH AVE, Seattle, WA 98104
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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, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Kei Yoshimatsu M.d. 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.

PECOS PAC ID4486947579
PECOS Enrollment IDI20240801004271
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

4

Medicare enrollment records show Kei Yoshimatsu reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

The Association Of University Physicians
0.3 mi
Anesthesiology
701 5TH AVE, SUITE 700
Seattle, WA 98104
  • Reassigned Medicare billing, Washington enrollment
  • 4,364 clinicians in this Medicare group
NPI 1023041159 (206) 543-6420
Bay Psychiatric Associates
672 mi
Psychiatry
2020 MILVIA ST STE 440
Berkeley, CA 94704
  • Reassigned Medicare billing, California enrollment
  • 116 clinicians in this Medicare group
NPI 1427163229 (510) 204-4635
City & County Of San Francisco
677 mi
Primary Care
729 FILBERT ST
San Francisco, CA 94133
  • Reassigned Medicare billing, California enrollment
  • 1,573 clinicians in this Medicare group
NPI 1023579356 (415) 352-2000
County Of Santa Clara
702 mi
Clinic/Center
2741 MIDDLEFIELD RD
Palo Alto, CA 94306
  • Reassigned Medicare billing, California enrollment
  • Also billed through NPI 1043354020 (California), NPI 1629301346 (California)
  • 2,460 clinicians in this Medicare group
NPI 1285228080 (408) 885-5000

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

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Harborview Medical Center

Acute Care Hospitals · Seattle, WA
1/5 CMS rating
OwnershipGovernment - Local
CMS Certification Number500064
Location325 9th AvenueSeattle, WA 98104 · King County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98104 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
$189.37 typical visit price
range $63.67 – $189.37
Typical copayment $47.34 (range $15.91 – $47.34)
Most-billed visit code 99205
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

80.58/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality67.43
Promoting Interoperability100
Improvement Activities40
Cost46.5

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.

SANDRA K WALKER ARNP
Nurse Practitioner (Acute Care)
325 9TH AVE
SEATTLE, WA 98104
King County (206) 598-0502
JULIA J VISSER DPT
Physical Therapist
325 9TH AVE, BOX 359920
SEATTLE, WA 98104
King County (206) 744-1675
GENIA J MONCADA
Pharmacist
325 9TH AVE, MAILSTOP 359912
SEATTLE, WA 98104
King County (206) 731-3219
JACQUELINE M. KIM LICSW, MSW
Social Worker (Clinical)
325 9TH AVE, BOX 359760
SEATTLE, WA 98104
King County (206) 744-8511
MS. DIANE E WHEELER MS, PA-C
Physician Assistant (Medical)
325 9TH AVE
SEATTLE, WA 98104
King County (206) 744-3000
AMELIA V. RIVERA
Physical Therapist
325 9TH AVE
SEATTLE, WA 98104
King County (206) 774-3300
TIMOTHY WILLIAM MENZA MD, PHD
Internal Medicine (Infectious Disease)
325 9TH AVE
SEATTLE, WA 98104
King County (206) 520-5000
DEMETRIOS TEREZAKIS
Occupational Therapist
325 9TH AVE
SEATTLE, WA 98104
King County (206) 744-6112

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 Kei Yoshimatsu's NPI number?

The NPI number for Kei Yoshimatsu is 1487072203. It was assigned to this individual provider in the NPPES registry on March 29, 2014.

Where is Kei Yoshimatsu located?

Kei Yoshimatsu practices at 325 9th Ave, Seattle, WA 98104. The listed phone number is (206) 744-9696.

What is Kei Yoshimatsu's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Kei Yoshimatsu enrolled in Medicare?

Yes. Kei Yoshimatsu 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 organizations bill Medicare for Kei Yoshimatsu's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kei Yoshimatsu reassigns Medicare benefits to 4 organizations: The Association Of University Physicians (Seattle, WA), Bay Psychiatric Associates (Berkeley, CA), City & County Of San Francisco (San Francisco, CA) and County Of Santa Clara (Palo Alto, CA). 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 Kei Yoshimatsu's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Kei Yoshimatsu accept?

Health plans from Premera Blue Cross Blue Shield of Alaska list Kei Yoshimatsu 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.

Is Kei Yoshimatsu affiliated with any hospitals?

According to CMS data, Kei Yoshimatsu is affiliated with Harborview Medical Center.

When was this NPI record last updated?

The NPPES record for Kei Yoshimatsu was last updated on September 26, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.