Physician Profile
Timothy L. Tan, D.O.
Unclaimed ProfileAbout Dr. Tan
Based in Seattle, WA, Timothy L. Tan, D.O. is listed in the NPI registry under pathology. Timothy graduated from Midwestern University, Chicago College of Osteopathic Med in 2013. Timothy is also listed as specializing in anatomic & clinical pathology. Medicare claims data shows Timothy provided 832 services to 593 patients. The services billed most often include pathology examination of tissue using a microscope, intermediate complexity, special stained specimen slides to examine tissue, initial procedure, and special stained specimen slides to examine tissue, each additional procedure.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (503) 906-7300
- Email not available
Practice Locations
2815 EASTLAKE AVE E STE 240
Seattle, WA 98102
9750 SW Nimbus Ave
Beaverton, OR 97008
3131 S State St Ste 309
Ann Arbor, MI 48108
1633 Medical Center Pt
Colorado Springs, CO 80907
251 E Huron St
Chicago, IL 60611
Conditions Evaluated or Diagnosed
Within Pathology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Autoimmune & Joints
Autopsy & Forensic
Blood & Metabolism
Blood Disorders
- Bleeding Disorders
- Blood Clotting Gene Mutation
- Iron-deficiency anemia
- Leukemia
- Lymphoma
- Multiple Myeloma
- Sickle cell disease
Cancer
- Bladder cancer
- Bone tumors
- Brain tumor
- Breast cancer
- Cervical cancer
- Colon cancer
- Endometrial cancer
- Kidney cancer
- Liver cancer
- Lung cancer
- Oral cavity cancer
- Ovarian cancer
- Pancreatic cancer
- Prostate cancer
- Soft-tissue sarcoma
- Stomach cancer
- Testicular cancer
- Thyroid cancer
Cervical & Gynecologic
Digestive
Digestive System
Endocrine
Genetics
Hormones
Immune System
Infections
Kidney
Liver
Metabolic & Routine Lab
Pregnancy & Fertility
Skin Cancer
Women's Health
Procedures & services
Autopsy & Forensic
Blood Tests
- Blood Clotting Tests
- Blood Type Test
- Cholesterol screening
- Complete Blood Count
- Comprehensive Metabolic Panel
- Hemoglobin A1c Test
- Iron Level Blood Test
- Thyroid Blood Test
Cytology
Cytology & Screening
- Fine-needle aspiration of a neck mass
- Human papillomavirus testing
- Pap Smear Test
- Thyroid Nodule Biopsy Review
Genetic & Molecular Tests
Genetics
Immune & Allergy Tests
Infection Testing
Infection Tests
Lab & Blood Tests
- Cardiac enzyme blood test
- Pregnancy blood test
- Sed rate inflammation test
- Testosterone blood test
- Vitamin D blood test
Pathology Review
Pregnancy & Fertility
Routine Lab Tests
Tissue Biopsy
- Bone Marrow Biopsy Interpretation
- Breast Biopsy Analysis
- Cervical biopsy lab review
- Colon Polyp Testing
- Kidney Biopsy Examination
- Liver Biopsy Examination
- Lung biopsy lab review
- Lymph Node Biopsy Analysis
- Oral biopsy lab review
- Prostate Biopsy Analysis
- Skin Biopsy Lab Review
- Stomach biopsy lab review
- Uterine biopsy lab review
Procedures Most Often Billed to Medicare
832 services · 593 patients · 5 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Pathology examination of tissue using a microscope, intermediate complexity | Lab test | 88305 |
682 | More often than most peers in Pathology |
| Special stained specimen slides to examine tissue, initial procedure | Lab test | 88342 |
84 | As often as other peers in Pathology |
| Special stained specimen slides to examine tissue, each additional procedure | Lab test | 88341 |
32 | |
| Special stained specimen slides to identify organisms including interpretation and report | Lab test | 88312 |
20 | |
| Pathology examination of tissue using a microscope, moderately low complexity | Lab test | 88304 |
14 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other pathologists at this location 1
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other pathologists in Seattle 8
Same specialty, same city.
More connections — 11 related providers in 2 groups
Trained at Midwestern University, Chicago College of Osteopathic Med 3
Other providers in the same specialty who trained at the same institution.
Class of 2013 at Midwestern University, Chicago College of Osteopathic Med 8
Providers who graduated from the same medical school in the same year.
Common questions
What does Timothy L. Tan specialize in?
Timothy L. Tan is a pathologist in Seattle, WA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Pathology”.
NPI registry
Where is Timothy L. Tan located?
Timothy L. Tan is listed at 2815 Eastlake Ave E Ste 240, Seattle, WA 98102. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Timothy L. Tan's phone number?
The number on file is (503) 906-7300. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Timothy L. Tan?
Timothy L. Tan's National Provider Identifier is 1205272507. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Timothy L. Tan train?
Timothy L. Tan attended Midwestern University, Chicago College of Osteopathic Med, graduating in 2013. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Timothy L. Tan have?
Timothy L. Tan has 13 years experience. Calculated from a graduation year of 2013, reported in the CMS National Downloadable File.
CMS public data
What does Timothy L. Tan do most often?
According to Medicare billing data, Timothy L. Tan the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Timothy L. Tan's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Timothy L. Tan. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.