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

Mr. Brian Lewis Greenberg, MD

Individual provider Rheumatology Physician · NPI 1609074723

Mr. Brian Lewis Greenberg, MD is a Rheumatology in Portland, Oregon. Graduated from New York University School of Medicine in 2004, 22 years ago. Practices with Kaiser Foundation Health Plan of the Northwest, a 1,811-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California, Connecticut and Oregon.

Years since qualifying
22
Trained at
New York University School of Medicine
Licensed in
CA, CT, OR
In the registry since
2007
Specialties on file
3
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

3550 N Interstate Ave
Portland, OR 97227-1196
Phone: (800) 813-2000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 136 Sherman Ave, New Haven, CT 06511-5238 — (203) 785-0885

Specialties & licences

Rheumatology Physician (primary) Taxonomy 207RR0500X · Licence MD154610 (OR)
Rheumatology Physician Taxonomy 207RR0500X · Licence A98940 (CA)
Rheumatology Physician Taxonomy 207RR0500X · Licence 48598 (CT)

Record details

NPI number1609074723
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 10, 2007
Last updated in NPPESFebruary 16, 2026
Certification dateFebruary 16, 2026

Medicare enrollment

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

Medicare specialtyRHEUMATOLOGY
Medical schoolNEW YORK UNIVERSITY SCHOOL OF MEDICINE
Graduated 2004 (22 years in practice)
Group practice Kaiser Foundation Health Plan Of The Northwest — 1811 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

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