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

Individual provider Emergency Medicine Physician · NPI 1720023559

Mark F Leonard, MD is an Emergency Medicine in Arlington, Washington. Graduated from Michigan State University College of Human Medicine in 1987, 39 years ago. Practices with Okanogan Douglas County Hospital Dist 1, a 37-clinician group and accepts Medicare assignment. Licensed in Washington.

Years since qualifying
39
Trained at
Michigan State University College of Human Medicine
Licensed in
WA
In the registry since
2006
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

330 S Stillaguamish Ave
Arlington, WA 98223-1642
Phone: (360) 435-2133
Fax: (360) 435-0513
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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 MD00027106 (WA)

Record details

NPI number1720023559
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 17, 2006
Last updated in NPPESApril 11, 2008
Mailing address505 S 336th St, Suite 600, Federal Way, WA 98003-6328

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolMICHIGAN STATE UNIVERSITY COLLEGE OF HUMAN MEDICINE
Graduated 1987 (39 years in practice)
Group practice Okanogan Douglas County Hospital Dist 1 — 37 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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