DR. MATTHEW DANDOIS DO
NPI 1497137525
Psychiatry & Neurology - Psychiatry in Seattle, WA

Active since June 25, 2015PECOS EnrolledAccepts Medicare Assignment
9800 4TH AVE NE, SEATTLE, WA 98115(206) 302-1200 Get Directions Write a Review

NPPES record last updated: March 30, 2021. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Mar 30, 2021, Aug 10, 2020, Jun 12, 2019 (3 updates tracked since 2019).

About Dr. Matthew Dandois Do NPPES

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

DR. MATTHEW DANDOIS DO (NPI 1497137525) is an individual psychiatry provider in Seattle, Washington, licensed in Washington (OP61058096) and active in the NPI registry since June 2015. He is enrolled in Medicare PECOS and is a graduate of Michigan State University College Of Osteopathic Medicine (2015).

NPPES Registry Identity

NPI1497137525
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameDR. MATTHEW DANDOISCredential: DO
Location Address9800 4TH AVE NESeattle, WA 98115-2152
Mailing Address9800 4th Ave NeSeattle, WA 98115-2152
Sole ProprietorYes
Medical School CMSMichigan State University College Of Osteopathic MedicineGraduated 2015
Enumeration DateJune 25, 2015
Last NPPES UpdateMarch 30, 20213 updates tracked since enumeration
NPPES CertifiedMarch 30, 2021
✔ NPI 1497137525 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
Licenses✔ Licensed in WA · OP61058096✔ Licensed in MI · 5101021819
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.
9800 4TH AVE NE, Seattle, WA 98115

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

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

Dr. Matthew Dandois Do 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 ID446555650
PECOS Enrollment IDI20200814002172
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 Matthew Dandois reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Multi-Specialty
320 WESTLAKE AVE. N., SUITE 100
Seattle, WA 98109
  • Reassigned Medicare billing, Washington enrollment
  • 2,678 clinicians in this Medicare group

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 98115 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.

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.

Physician Assistant
9800 4TH AVE NE
SEATTLE, WA 98115
Social Worker (Clinical)
9800 4TH AVE NE
SEATTLE, WA 98115
Physician Assistant
9800 4TH AVE NE
SEATTLE, WA 98115
Social Worker (Clinical)
9800 4TH AVE NE
SEATTLE, WA 98115
Pharmacist
9800 4TH AVE NE
SEATTLE, WA 98115
Family Medicine
9800 4TH AVE NE
SEATTLE, WA 98115
Optometrist
9800 4TH AVE NE
SEATTLE, WA 98115
Family Medicine
9800 4TH AVE NE
SEATTLE, WA 98115

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 Matthew Dandois's NPI number?

The NPI number for Matthew Dandois is 1497137525. It was assigned to this individual provider in the NPPES registry on June 25, 2015.

Where is Matthew Dandois located?

Matthew Dandois practices at 9800 4th Ave NE, Seattle, WA 98115. The listed phone number is (206) 302-1200.

What is Matthew Dandois's specialty?

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

Is Matthew Dandois enrolled in Medicare?

Yes. Matthew Dandois 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 organization bills Medicare for Matthew Dandois's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Matthew Dandois 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 Matthew Dandois'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 Matthew Dandois was last updated on March 30, 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.