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

Mark S Harrington, MD

Individual provider Internal Medicine Physician · NPI 1659346252

Mark S Harrington, MD is an Internal Medicine Physician in Gresham, Oregon. Licensed in Oregon. Registered with an NPI since 2006.

Licensed in
OR
In the registry since
2006
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

24800 SE Stark St
Gresham, OR 97030-3378
Phone: (503) 674-1580
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 20725 (OR)
Internal Medicine Physician Taxonomy 207R00000X · Licence 20725 (OR)

Record details

NPI number1659346252
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 17, 2006
Last updated in NPPESApril 22, 2011
Mailing address24800 Se Stark St, Gresham, OR 97030-3378

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