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

Mark James Lisowski, MD

Individual provider Emergency Medicine Physician · NPI 1477917797

Mark James Lisowski, MD practises Emergency Medicine in Mount Vernon, Washington. Graduated from University of Washington School of Medicine in 2016, 10 years ago. Practices with Northwest Emergency Physicians LLC, a 262-clinician group and accepts Medicare assignment. Licensed in Arizona and Washington.

Years since qualifying
10
Trained at
University of Washington School of Medicine
Licensed in
AZ, WA
In the registry since
2016
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

1415 E Kincaid St
Mount Vernon, WA 98274-4126
Phone: (360) 424-4111
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence MD60920069 (WA)
Emergency Medicine Physician Taxonomy 207P00000X · Licence R75483 (AZ)

Record details

NPI number1477917797
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 12, 2016
Last updated in NPPESAugust 6, 2024
Certification dateAugust 6, 2024

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolUNIVERSITY OF WASHINGTON SCHOOL OF MEDICINE
Graduated 2016 (10 years in practice)
Group practice Northwest Emergency Physicians Llc — 262 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients377
Services billed 432 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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Northwest Emergency Physicians LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 262 clinicians in the practice; 12 are shown here.

Other providers in Mount Vernon