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

Leah Elisabeth Karlsen, MD

Individual provider Internal Medicine Physician · NPI 1104408806

Leah Elisabeth Karlsen, MD is an Internal Medicine in Seattle, Washington. Graduated from University of Washington School of Medicine in 2021, 5 years ago. Practices with Select Outpatient Services Inc, a 790-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Washington.

Years since qualifying
5
Trained at
University of Washington School of Medicine
Licensed in
WA
In the registry since
2021
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

5350 Tallman Ave NW Ste 301
Seattle, WA 98107-5902
Phone: (206) 386-2550
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1959 Ne Pacific St, Seattle, WA 98195-0001 — (206) 543-3605

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence MD61455824 (WA)

Record details

NPI number1104408806
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 22, 2021
Last updated in NPPESNovember 19, 2025
Certification dateNovember 19, 2025

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF WASHINGTON SCHOOL OF MEDICINE
Graduated 2021 (5 years in practice)
Group practice Select Outpatient Services Inc — 790 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

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