Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Karen S Woo, DO, FACOS, FACS

Individual provider Surgery Physician · NPI 1295941144

Dr. Karen S Woo, DO, FACOS, FACS practises General Surgery in Mount Vernon, Washington. Graduated from New York College of Osteo Medicine of New York Institute of Technology in 2006, 20 years ago. Practices with Public Hospital Dist No 1 Skagit, a 321-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in New York and Washington.

Years since qualifying
20
Trained at
New York College of Osteo Medicine of New York Institute of Technology
Licensed in
NY, WA
In the registry since
2007
Specialties on file
2
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.
FACS — Fellow of the American College of Surgeons
A surgeon admitted as a fellow of the ACS.

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Practice location Address checks out

1400 E Kincaid St
Mount Vernon, WA 98274-4127
Phone: (360) 428-2586
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 4545 Cordata Parkway, Suite 1c, Bellingham, WA 98226 — (360) 752-5273

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence OP 60396655 (WA)
Surgery Physician Taxonomy 208600000X · Licence 262721-1 (NY)

Record details

NPI number1295941144
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO , FACOS , FACS
Sole proprietorYes
NPI enumeratedMay 15, 2007
Last updated in NPPESMarch 17, 2025
Certification dateMarch 17, 2025

Medicare enrollment

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

Medicare specialtyGENERAL SURGERY
Medical schoolNEW YORK COLLEGE OF OSTEO MEDICINE OF NEW YORK INSTITUTE OF TECHNOLOGY
Graduated 2006 (20 years in practice)
Group practice Public Hospital Dist No 1 Skagit — 321 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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.

Colonoscopy 1–10 times
Hernia repair (minimally invasive) 1–10 times
Hernia repair - groin (open) 1–10 times
Mastectomy 1–10 times
Upper gastrointestinal (GI) endoscopy for acid reflux 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 patients112
Services billed 235 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

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.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $358 3 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

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

  • Skagit Valley Hospital Hospital · Mount Vernon, WA
  • Peacehealth St Joseph Medical Center Hospital · Bellingham, WA

Colleagues at Public Hospital Dist No 1 Skagit

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 321 clinicians in the practice; 12 are shown here.

Other providers in Mount Vernon