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

Dr. Keith Alexander Luther, MD

Individual provider Internal Medicine Physician · NPI 1912001652

Dr. Keith Alexander Luther, MD is an Internal Medicine in Mercer Island, Washington. Graduated from University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb) in 1993, 33 years ago. Practices with Swedish Health Services, a 384-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Washington.

Years since qualifying
33
Trained at
University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb)
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

3236 78th Ave SE Ste 200
Mercer Island, WA 98040-3500
Phone: (206) 275-5060
Fax: (206) 275-5061
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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 MD00037360 (WA)

Record details

NPI number1912001652
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 12, 2006
Last updated in NPPESFebruary 16, 2026
Certification dateFebruary 16, 2026

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF ILLINOIS COLLEGE OF MED (CHI/PEOR/ROCK/CHM-URB)
Graduated 1993 (33 years in practice)
Group practice Swedish Health Services — 384 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Mercer Island