Brian Lewis Greenberg, M.D.
Rheumatology Physician · Portland, OR
Brian Lewis Greenberg, M.D. is a rheumatology physician with a practice address in Portland, Oregon, and NPI 1609074723, issued on Jul 10, 2007. Check the license (Oregon MD154610, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Brian Lewis Greenberg
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License numbers
- MD154610 OR
A98940 CA
48598 CT
Self-reported in NPPES; status is on the state search - Practice location
- 3550 N Interstate Ave, Portland, OR 97227
- Phone
- (800) 813-2000
- Enumerated
- Jul 10, 2007
- Record last updated
- Feb 16, 2026
- Medicare enrollment
- Enrolled (PECOS I20120123000570); accepts Medicare assignment
- Medical or professional school
- New York University School Of Medicine, 2004
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 101 in Oregon → Look up another NPI →
Also registered at 3550 N Interstate Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brianna Abbey, MA, LPC, CADC 1Professional Counselor1710133665
- Kaylene Adams, RPHPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1669922035
- John Alferes, M.D.Internal Medicine Physician1679680805
- James Allen, M.M.F.T.Addiction (Substance Use Disorder) Counselor1821192279
- Brad Anderson, M.D.Addiction Medicine (Family Medicine) Physician1245323724
- Brenda Annotti, F.N.P.Gerontology Registered Nurse1255335295
Verify Brian Lewis Greenberg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD154610Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
66% more Medicare Part D claims than the average rheumatology physician in 2024
3,285 Medicare Part D claims for 637 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. Brand-name drugs were 35% of claims.
Most prescribed
- Methotrexate766 claims
- Prednisone594 claims
- Hydroxychloroquine Sulfate255 claims
- Leflunomide204 claims
- Amjevita(Cf) Autoinjector199 claims
- Allopurinol138 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Kaiser Foundation Health Plan OF The NorthwestClackamas, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brian Lewis Greenberg among 101 rheumatology physician records in Oregon
Brian Lewis Greenberg, M.D. is one of 101 rheumatology physician records with a practice address in Oregon. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 50% of them.
- NPI issued2007 · 50% of these records are older, 39% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2004 · median 2004 among the 65 with a school on file
- Record last updated2026 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in Oregon
There are 101 rheumatology physician records in Oregon.
All 101 in Oregon → Every provider in Portland → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Darshika Goswami, M.D.Portland, OR 972271083025464
- Esther Hwang, M.D.Portland, OR 972271215035670
- Lee Anna Jones, MDPortland, OR 972271063532422
- Joji Kappes, M.D.Portland, OR 972271386758035
- Christine McBurney, M.D.Portland, OR 972271326230889
- William Melcher, M.D.Portland, OR 972271609889070
- Jennifer SimpsonPortland, OR 972271255445425
- Kathryn Baker, DOPortland, OR 972251245327295
Common questions
What is Brian Lewis Greenberg, M.D.'s NPI number?
Brian Lewis Greenberg, M.D.'s National Provider Identifier (NPI) is 1609074723, issued on Jul 10, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Brian Lewis Greenberg, M.D. located?
The NPPES record lists a practice address at 3550 N Interstate Ave, Portland, OR, 97227. Phone: (800) 813-2000. Providers update this record themselves, so call before visiting.
How can I verify Brian Lewis Greenberg, M.D.'s license?
NPPES lists Oregon license number MD154610, as entered by the provider. Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Brian Lewis Greenberg, M.D. prescribe under Medicare Part D?
In 2024, Brian Lewis Greenberg, M.D. had 3,285 Medicare Part D claims for 637 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.