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

Dr. Michael Wayne Armstrong Jr., DO

Individual provider Internal Medicine Physician · NPI 1740742337

Dr. Michael Wayne Armstrong Jr., DO is an Internal Medicine Physician in Clackamas, Oregon. Licensed in Oregon. Registered with an NPI since 2019.

Licensed in
OR
In the registry since
2019
Specialties on file
3
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

10100 SE Sunnyside Rd
Clackamas, OR 97015-8970
Phone: (503) 652-2880
Fax: (503) 571-9443
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence DO209686 (OR)
Pulmonary Disease Physician Taxonomy 207RP1001X · Licence DO209686 (OR)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence DO209686 (OR)

Record details

NPI number1740742337
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedApril 2, 2019
Last updated in NPPESJune 29, 2026
Certification dateJune 29, 2026
Mailing address10100 Se Sunnyside Rd, Clackamas, OR 97015-8970

Other providers in Clackamas