Timothy Tan, D.O.
NPI 1205272507 · Dermatopathology (Pathology) Physician · Seattle, WA
Provider details
- NPI number
- 1205272507
- Entity type
- Individual
- Primary specialty
- Dermatopathology (Pathology) PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 125064426 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
13 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
5 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
832 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 682 | $59 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 84 | $106 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 32 | $91 |
| Special Stained Specimen Slides to Identify Organisms Including Interpretation and Report88312 | 20 | $113 |
| Pathology Examination of Tissue Using a Microscope, Moderately Low Complexity88304 | 14 | $37 |
Typical Medicare-allowed amounts for these services range $37–$113 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (4)
- 1633 Medical Center PTColorado Springs, CO 80907-5700Phone: (503) 906-7300Fax: (503) 245-8219
- 251 E Huron StChicago, IL 60611-2908Phone: (312) 926-2000
- 3131 S State St Ste 309Ann Arbor, MI 48108-1658Phone: (503) 245-8219Fax: (503) 245-8219
- 9750 Sw Nimbus AveBeaverton, OR 97008-7172Phone: (503) 906-7300Fax: (503) 245-8219
Registry dates
- Enumerated
- 2013-05-14
- Last updated
- 2025-11-26
- Certified
- 2025-11-26
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.