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

Hillary Karen Liss

Individual provider Internal Medicine Physician · NPI 1609952472

Hillary Karen Liss practises Internal Medicine in Seattle, Washington. Graduated from University of Maryland School of Medicine in 1997, 29 years ago. Practices with Community Health Center of Snohomish County, a 85-clinician group and accepts Medicare assignment. Licensed in Washington.

Years since qualifying
29
Trained at
University of Maryland School of Medicine
Licensed in
WA
In the registry since
2006
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Practice location Address checks out

325 9th Ave
Seattle, WA 98104-2499 Not confirmed with CMS for 14 years — call before visiting
Phone: (206) 744-3000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence MD00037983 (WA)

Record details

NPI number1609952472
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedOctober 27, 2006
Last updated in NPPESJanuary 5, 2012

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF MARYLAND SCHOOL OF MEDICINE
Graduated 1997 (29 years in practice)
Group practice Community Health Center Of Snohomish County — 85 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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 patients40
Services billed 113 a service is one billed item, such as a visit, a test or a procedure
Average patient age67

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.

Colleagues at Community Health Center of Snohomish County

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 85 clinicians in the practice; 12 are shown here.

Other providers in Seattle