Timothy Leonor Tan, D.O.
Dermatopathology (Pathology) Physician · Seattle, WA
Timothy Leonor Tan, D.O. is a dermatopathology (pathology) physician with a practice address in Seattle, Washington, and NPI 1205272507, issued on May 14, 2013. Check the license (Washington 70062322, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Timothy Leonor Tan
- Credential
- D.O.
- Primary taxonomy
- Dermatopathology (Pathology) Physician 207ZD0900X
- License numbers
- 70062322 WA
125064426 IL
02007763A IN
Self-reported in NPPES; status is on the state search - Practice location
- 2815 Eastlake Ave E Ste 240, Seattle, WA 98102
- Phone
- (503) 906-7300
- Enumerated
- May 14, 2013
- Record last updated
- Nov 26, 2025
- Fax
- (503) 245-8219
- Medicare enrollment
- Enrolled (PECOS I20200616002534); accepts Medicare assignment
- Medical or professional school
- Midwestern University, Chicago College Of Osteopathic Med, 2013
- Entity
- Type 1 · individual
7 nearest dermatopathology (pathology) physician records → All 8 in Washington → Look up another NPI →
Also registered at 2815 Eastlake Ave E Ste 240
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maria Isales, MDDermatopathology (Pathology) Physician1962897520
Verify Timothy Leonor Tan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license 70062322Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through 3 group practices
- Christina G Steil Dermatology LtdHinsdale, IL
- Curtis T. Thompson, M.D. And Associates, PLLCAnn Arbor, MI
- Deerfield Dermatology Associates, Ltd.Gurnee, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Dermatopathology (Pathology) Physician providers in Washington
There are 8 dermatopathology (pathology) physician records in Washington.
All 8 in Washington → Every provider in Seattle → Dermatopathology (Pathology) Physician nationwide →
The 7 dermatopathology (pathology) physician records with the nearest ZIP codes
- Maria Isales, MDSeattle, WA 981021962897520
- Jonathan RhimSeattle, WA 981121861545535
- Oliver Chang, MDSeattle, WA 981951740504554
- Evan George, MDSeattle, WA 981951093890824
- Elaine Brent, MS MDTacoma, WA 984311427002260
- Henry Carag, M.D.Vancouver, WA 986641598946469
- Peter Herreid, MDSpokane Valley, WA 992161376519249
Common questions
What is Timothy Leonor Tan, D.O.'s NPI number?
Timothy Leonor Tan, D.O.'s National Provider Identifier (NPI) is 1205272507, issued on May 14, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Timothy Leonor Tan, D.O. located?
The NPPES record lists a practice address at 2815 Eastlake Ave E Ste 240, Seattle, WA, 98102. Phone: (503) 906-7300. Providers update this record themselves, so call before visiting.
How can I verify Timothy Leonor Tan, D.O.'s license?
NPPES lists Washington license number 70062322, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.