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

Gregory Alan Thomas, MD

Individual provider Pediatric Hematology & Oncology Physician · NPI 1275541716

Gregory Alan Thomas, MD is a Pediatric Hematology & Oncology Physician in Portland, Oregon. Licensed in Oregon. Registered with an NPI since 2006.

Licensed in
OR
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

3181 SW Sam Jackson Park Rd Cdrc-P
Portland, OR 97239-3011
Phone: (503) 494-1543
Fax: (503) 494-0714
Show map & directions

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

Specialties & licences

Pediatric Hematology & Oncology Physician (primary) Taxonomy 2080P0207X · Licence MD17284 (OR)

Record details

NPI number1275541716
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 3, 2006
Last updated in NPPESJuly 18, 2007
Mailing address3181 Sw Sam Jackson Park Rd, Cdrc-P, Portland, OR 97239-3011

Other providers in Portland