Timothy Leonor Tan, D.O.

NPI 1205272507ActiveIndividual· Pathology, Dermatopathology· Seattle, WA

Pathology, Dermatopathology (D.O.) in Seattle, Washington, trained at Midwestern University, Chicago College of Osteopathic Med (class of 2013). Medicare paid $42,769 for services to 485 patients in 2024.

Overview

NPI	1205272507
Status	Active
Entity type	Individual
Credential	D.O.
Sole proprietor	No
NPI issued	May 14, 2013
Last updated in NPPES	Sep 11, 2026
Certified by provider	Sep 11, 2026

Specialties and licenses

Taxonomy	Code	License	State
Pathology, Dermatopathology Primary	207ZD0900X	70062322	WA
Pathology, Anatomic Pathology & Clinical Pathology	207ZP0102X	02007763A	IN
Pathology, Anatomic Pathology & Clinical Pathology	207ZP0102X	125064426	IL

About license numbers in NPPES

Exclusion screening

List	Result	Details
HHS-OIG LEIE · Nov 10, 2026	No match	Checked by NPI and by name + state
North Carolina Medicaid · Nov 11, 2026	No match	—
New York OMIG · Nov 11, 2026	No match	—
Ohio Medicaid · Nov 11, 2026	No match	—
Pennsylvania Medicheck · Nov 11, 2026	No match	—
Washington HCA · Nov 11, 2026	No match	—

Official OIG search · How matching works ·Bulk check a roster

Medicare

Enrollment (PECOS)	Enrolled Practitioner - Pathology (IL); Practitioner - Pathology (IN); Practitioner - Pathology (MI); Practitioner - Pathology (OR)
Accepts assignment	Yes (participating)