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

Dr. Mark Thomas Sonderman, MD

Individual provider Internal Medicine Physician · NPI 1578128658

Dr. Mark Thomas Sonderman, MD is an Internal Medicine Physician in Seattle, Washington. Licensed in Tennessee and Washington. Registered with an NPI since 2019.

Licensed in
TN, WA
In the registry since
2019
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

1959 NE Pacific St
Seattle, WA 98195-0001
Phone: (206) 520-5000
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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 MD61401126 (WA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 63952 (TN)

Record details

NPI number1578128658
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 5, 2019
Last updated in NPPESMay 2, 2023
Certification dateJuly 1, 2022

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