Dr. Brian Lewis Greenberg, MD
- Medicare services, 2019
- 13
- Medicare patients, 2024
- 13
- Part D claims, 2024
- 3,285
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 500 NE Multnomah St, Portland, OR 97232
- Practice phone
- Call (503) 813-2440
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Kaiser Foundation Health Plan of the Northwest
Portland, Oregon
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Dr. Brian Lewis Greenberg is a rheumatologist in Portland, Oregon
Dr. Greenberg practices at Kaiser Foundation Health Plan of the Northwest in Portland, Oregon.
Dr. Greenberg's NPI, 1609074723, was assigned on July 10, 2007. Dr. Greenberg graduated from New York University School of Medicine in 2004. Dr. Greenberg holds Connecticut license 48598.
- NPI
- 1609074723NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6901943885
- NPI enumeration date
- July 10, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (503) 813-2440
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Brian Lewis Greenberg practices at Kaiser Foundation Health Plan of the Northwest in Portland, Oregon
Dr. Greenberg's primary practice is Kaiser Foundation Health Plan of the Northwest, at 500 NE Multnomah St, Portland, OR 97232 in Multnomah County. The practice phone is (503) 813-2440.
- Kaiser Foundation Health Plan of the Northwest500 NE Multnomah St, Portland, OR 97232 · Multnomah CountyPhone(503) 813-2440
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Brian Lewis Greenberg is affiliated with 2 sites of care and 1 medical group
Dr. Greenberg's primary practice is Kaiser Foundation Health Plan of the Northwest in Portland, Oregon. The medical group on file is Kaiser Permanente Northwest. Dmand AI also links Dr. Greenberg to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Brian Lewis Greenberg's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Greenberg practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Foundation Health Plan of the Northwest | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Brian Lewis Greenberg is one of 81 rheumatologists in Oregon
Rheumatology is Dr. Greenberg's primary specialty in the NPI Registry, under taxonomy code 207RR0500X. Dmand AI has Dr. Greenberg's licenses on file in 2 states: Connecticut and California.
Specialties and state licenses
- Rheumatology, ConnecticutPrimary
- California license
Rheumatologists near Dr. Greenberg
Counts of rheumatologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Brian Lewis Greenberg billed Medicare for 13 services in 2019
CMS data shows 13 Medicare services from Dr. Greenberg across 1 procedure code in 2019, all of them office visits, for 13 Medicare patients. Medicare paid $633 for them. Every service was in an office.
Dr. Greenberg's Medicare services by type, 2016 to 2019
- 2016
- 2019
- Office and hospital visits
- 2016: 132019: 13No change
Dr. Greenberg compared with the Oregon median for rheumatologists, 2019
- Dr. Greenberg
- Oregon median
- Medicare services
- 13vs 83698% below
- Medicare patients
- 13vs 19893% below
- Part D claims
- 3,161vs 1,4412.2 times
Medians across 88 rheumatologists in Oregon with Dmand AI profiles that report each measure.
Dr. Greenberg's most billed Medicare procedure codes, 2019
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Brian Lewis Greenberg treated 13 Medicare patients in 2024, average age 61
CMS counts 13 Medicare patients who saw Dr. Greenberg in 2024. 75% of them have arthritis. Their average risk score is 1.63, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Greenberg's median patient age at 51, with 72% women.
Chronic conditions among Dr. Greenberg's Medicare patients, 2024
- Arthritis75%
Share of Medicare patients with each condition. A patient can have several.
Dr. Greenberg's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 51
Patient panel by sex, all payers
- Women72%
- Men27%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Brian Lewis Greenberg wrote 3,285 Medicare Part D claims in 2024
In 2024, Dr. Greenberg wrote 3,285 Medicare Part D claims for 637 patients. 65% of them were for generic drugs. CMS names the drug for 3,161 of them, across 30 drugs with 11 or more claims each, at $2,353,438 in total drug cost. In 2023, CMS named 3,009 claims across 28 drugs.
Dr. Greenberg's Part D claims by kind of drug, 2024
- Generic2,151 claims65%
- Brand-name1,134 claims35%
Dr. Greenberg's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3,0092024: 3,1615%
Drugs named by CMS: 30 in 2024, 28 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Brian Lewis Greenberg takes part in Medicare
Dr. Greenberg accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Brian Lewis Greenberg graduated from New York University School of Medicine
Dr. Greenberg graduated from New York University School of Medicine in 2004.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Brian Lewis Greenberg's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Brian Lewis Greenberg
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Brian Lewis Greenberg's NPI number?
Dr. Brian Lewis Greenberg's NPI number is 1609074723. It was assigned on July 10, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Brian Lewis Greenberg?
Dr. Brian Lewis Greenberg is a rheumatologist in Portland, Oregon. The primary specialty in the NPI Registry is Rheumatology Physician (taxonomy code 207RR0500X).
Where does Dr. Brian Lewis Greenberg practice?
Dr. Greenberg practices at 500 NE Multnomah St, Portland, OR 97232. Dr. Greenberg's primary practice is Kaiser Foundation Health Plan of the Northwest in Portland, Oregon. Dmand AI also links Dr. Greenberg to 1 group practice or clinic.
What is Dr. Brian Lewis Greenberg's office phone number?
The practice phone on file for Dr. Greenberg is (503) 813-2440.
What is Dr. Brian Lewis Greenberg's medical license number?
Dr. Greenberg holds Connecticut license 48598, one of the licenses on file in 2 states.
Which states has Dr. Brian Lewis Greenberg been licensed in?
Dmand AI has state licenses on file for Dr. Greenberg in Connecticut and California.
What medical group is Dr. Brian Lewis Greenberg part of?
Dr. Greenberg is linked to Kaiser Permanente Northwest.
Does Dr. Brian Lewis Greenberg accept Medicare?
Yes. CMS data shows Dr. Greenberg billed Medicare for 13 services in 2019, and Dr. Greenberg accepts Medicare assignment.
How many Medicare patients does Dr. Brian Lewis Greenberg see?
CMS counts 13 Medicare patients who saw Dr. Greenberg in 2024, with an average age of 61.
What services does Dr. Brian Lewis Greenberg bill to Medicare?
In 2019, Dr. Greenberg's most billed Medicare services were office visit, established patient (99214).
Show 3 more questionsShow fewer questions
Where did Dr. Brian Lewis Greenberg go to medical school?
Dr. Greenberg graduated from New York University School of Medicine in 2004.
What drugs does Dr. Brian Lewis Greenberg prescribe most?
In 2024 Medicare Part D data, Dr. Greenberg's most prescribed drugs by claims were Methotrexate, Prednisone and Hydroxychloroquine Sulfate.
How long has Dr. Brian Lewis Greenberg been practicing?
Dr. Greenberg graduated from medical school in 2004, 22 years ago.
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