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

Dr. Kathryn Patricia Pennington, MD

Individual provider Gynecologic Oncology Physician · NPI 1336265511

Dr. Kathryn Patricia Pennington, MD practises Gynecological Oncology in Seattle, Washington. Graduated from University of Michigan Medical School in 2006, 20 years ago. Practices with Bartlett Regional Hospital, a 7-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Washington.

Years since qualifying
20
Trained at
University of Michigan Medical School
Licensed in
WA
In the registry since
2007
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

825 Eastlake Ave E
Seattle, WA 98109-4405 Not confirmed with CMS for 11 years — call before visiting
Phone: (206) 228-1000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gynecologic Oncology Physician (primary) Taxonomy 207VX0201X · Licence MD60232578 (WA)
Obstetrics & Gynecology Physician Taxonomy 207V00000X · Licence MD60232578 (WA)

Record details

NPI number1336265511
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 21, 2007
Last updated in NPPESAugust 13, 2015

Medicare enrollment

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

Medicare specialtyGYNECOLOGICAL ONCOLOGY
Also practisesOBSTETRICS/GYNECOLOGY
Medical schoolUNIVERSITY OF MICHIGAN MEDICAL SCHOOL
Graduated 2006 (20 years in practice)
Group practice Bartlett Regional Hospital — 7 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 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.

Removal of the uterus 19 times · 92nd percentile

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 patients147
Services billed 357 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

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 $588 13 payments · a meal or drink at a meeting or visit, not a fee
Education $99 1 payment · educational material or training, 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.

Colleagues at Bartlett Regional Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

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