DR. THOMAS A DEAN MD
NPI 1235128802
Pathology - Clinical Pathology/Laboratory Medicine in Burien, WA
About Dr. Thomas A Dean Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. THOMAS A DEAN MD (NPI 1235128802) is an individual clinical pathology/laboratory medicine provider in Burien, Washington, licensed in Washington (MD00038918) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS, is affiliated with Swedish Medical Center, and is a graduate of University Of Washington School Of Medicine (1995).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 4
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. Thomas A Dean Md 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.
Medicare Billing Reassignments
2Medicare enrollment records show Thomas Dean reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Seattle, WA 98104
- Reassigned Medicare billing, Washington enrollment
- 60 clinicians in this Medicare group
Seattle, WA 98104
- Reassigned Medicare billing, Washington enrollment
- 911 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.
Areas of Expertise CMS Part B claims 7
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Swedish Medical Center
Acute Care Hospitals · Seattle, WAHarrison Medical Center
Acute Care Hospitals · Bremerton, WASt Joseph Medical Center
Acute Care Hospitals · Tacoma, WAEvergreenhealth Medical Center
Acute Care Hospitals · Kirkland, WASt Anthony Hospital
Acute Care Hospitals · Gig Harbor, WAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 98166 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
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 Thomas Dean's NPI number?
The NPI number for Thomas Dean is 1235128802. It was assigned to this individual provider in the NPPES registry on October 17, 2005.
Where is Thomas Dean located?
Thomas Dean practices at 16251 Sylvester Rd SW Highline Pathology Associates PC Thomas Dean MD, Burien, WA 98166. The listed phone number is (206) 431-5221.
What is Thomas Dean's specialty?
The primary specialty registered for this NPI is Pathology, specializing in Clinical Pathology/Laboratory Medicine, with taxonomy code 207ZP0105X.
Is Thomas Dean enrolled in Medicare?
Yes. Thomas Dean 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 Thomas Dean's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Dean reassigns Medicare benefits to 2 organizations: Cellnetix Pathology, PLLC (Seattle, WA) and The Polyclinic (Seattle, WA). 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 Thomas Dean's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Thomas Dean affiliated with any hospitals?
According to CMS data, Thomas Dean is affiliated with Swedish Medical Center, Harrison Medical Center, St Joseph Medical Center, Evergreenhealth Medical Center and St Anthony Hospital.
When was this NPI record last updated?
The NPPES record for Thomas Dean was last updated on September 19, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Dr. Thomas A Dean, MD · NPI 1235128802
Clinical Pathology/Laboratory Medicine physician in Burien, Washington. Individual provider, active in the CMS NPPES registry since October 17, 2005.
## Identity
- **NPI:** 1235128802 (Entity type: Individual)
- **Enumerated:** October 17, 2005
- **Primary specialty:** Pathology - Clinical Pathology/Laboratory Medicine · taxonomy 207ZP0105X
- **State license:** MD00038918 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 16251 SYLVESTER RD SW, HIGHLINE PATHOLOGY ASSOCIATES PC THOMAS DEAN MD, Burien, WA 98166-3017
- **Phone:** (206) 431-5221
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Cellnetix Pathology, PLLC (NPI 1972563385, Seattle, WA); The Polyclinic (NPI 1962824219, Seattle, WA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Washington School Of Medicine, class of 1995
## Record status
- **NPPES last updated:** September 19, 2011
- **Other identifiers:** Medicare UPIN H40556; Medicaid 8276024 (WA); Other 220030859 (WA); and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1235128802) · Data from the CMS NPPES public registry.