Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Stephen Chihoon Woo, DO

Individual provider Family Medicine Physician · NPI 1811256449

Stephen Chihoon Woo, DO is registered under Family Practice in Sequim, Washington. Graduated from Michigan State University College of Osteopathic Medicine in 2012, 14 years ago. Practices with Olympic Medical Physicians, a 103-clinician group and accepts Medicare assignment. Licensed in Washington.

Years since qualifying
14
Trained at
Michigan State University College of Osteopathic Medicine
Licensed in
WA
In the registry since
2012
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

800 N 5th Ave Ste 101
Sequim, WA 98382-3045
Phone: (360) 565-0999
Fax: (360) 582-4221
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence OP60527165 (WA)

Record details

NPI number1811256449
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMay 16, 2012
Last updated in NPPESMay 23, 2022
Certification dateMay 23, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Medical schoolMICHIGAN STATE UNIVERSITY COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 2012 (14 years in practice)
Group practice Olympic Medical Physicians — 103 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Removal of skin lesions 1–10 times
Skin biopsy 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients608
Services billed 2,053 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Jefferson Healthcare Hospital · Port Townsend, WA
  • Olympic Medical Center Hospital · Port Angeles, WA
  • St Michael Medical Center Hospital · Silverdale, WA
  • Olympic Medical Home Health Home health agency · Port Angeles, WA

Colleagues at Olympic Medical Physicians

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 103 clinicians in the practice; 12 are shown here.

Other providers in Sequim