Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Donald Loren Slack, MD

Individual provider Emergency Medicine Physician · NPI 1700816345

Dr. Donald Loren Slack, MD is an Emergency Medicine in Mount Vernon, Washington. Graduated from University of Washington School of Medicine in 1991, 35 years ago. Practices with Northwest Emergency Physicians LLC, a 262-clinician group and accepts Medicare assignment. Licensed in Washington.

Years since qualifying
35
Trained at
University of Washington School of 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

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 MD00032809 (WA)

Record details

NPI number1700816345
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 3, 2006
Last updated in NPPESMarch 2, 2017

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 1991 (35 years in practice)
Group practice Northwest Emergency Physicians Llc — 262 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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