Gregory Rubin, M.D.
Internal Medicine Physician · Portland, OR
Gregory Rubin, M.D. is an internal medicine physician with a practice address in Portland, Oregon, and NPI 1326269721, issued on May 1, 2007. Check the license (Oregon MD27694, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Gregory Rubin
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- MD27694 OR
MD60648472 WA
Self-reported in NPPES; status is on the state search - Practice location
- 19500 SE Stark St, Portland, OR 97233
- Phone
- (503) 669-3900
- Enumerated
- May 1, 2007
- Record last updated
- Dec 17, 2025
- Medicare enrollment
- Enrolled (PECOS I20080414000024); accepts Medicare assignment
- Medical or professional school
- Albert Einstein College Of Medicine Of Yeshiva University, 2004
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,116 in Oregon → Look up another NPI →
Also registered at 19500 SE Stark St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Merrill Ahrens, MDInternal Medicine Physician1194839225
- Christopher Alaka, RPH, C.C.R.APharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1083982706
- Nicolle AsencioFamily Nurse Practitioner1225753692
- Richard Babal, MANAGEROptician1295824282
- Thomas Beaver, M.D.Internal Medicine Physician1215019112
- Jennifer Bishop, MDInternal Medicine Physician1548284557
Verify Gregory Rubin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD27694Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.4 times the Medicare Part D claims of the average internal medicine physician in 2024
14,041 Medicare Part D claims for 1,227 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 1,293 claims were for opioids.
Most prescribed
- Atorvastatin Calcium834 claims
- Lisinopril688 claims
- Hydrocodone-Acetaminophen502 claims
- Oxycodone Hcl488 claims
- Amlodipine Besylate438 claims
- Levothyroxine Sodium401 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 NorthwestPortland, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory Rubin among 2,116 internal medicine physician records in Oregon
Gregory Rubin, M.D. is one of 2,116 internal medicine 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 46% of them.
- NPI issued2007 · 46% of these records are older, 45% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2004 · median 2008 among the 1,232 with a school on file
- Record last updated2025 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
889 internal medicine physician records list a practice address in Portland
They are 889 of the 42,088 NPPES records with a practice address in Portland, and 2,116 internal medicine physician records in Oregon.
All 2,116 in Oregon → Every provider in Portland → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Merrill Ahrens, MDPortland, OR 972331194839225
- Thomas Beaver, M.D.Portland, OR 972331215019112
- Jennifer Bishop, MDPortland, OR 972331548284557
- Benjamin Brody, M.D.Portland, OR 972331245243799
- Brian Gould, M.D.Portland, OR 972331073535266
- Glenn Greeder, MDPortland, OR 972331821184250
- June GreenePortland, OR 972331932284346
- Max Grishkevich, MDPortland, OR 972331477518637
Common questions
What is Gregory Rubin, M.D.'s NPI number?
Gregory Rubin, M.D.'s National Provider Identifier (NPI) is 1326269721, issued on May 1, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Rubin, M.D. located?
The NPPES record lists a practice address at 19500 SE Stark St, Portland, OR, 97233. Phone: (503) 669-3900. Providers update this record themselves, so call before visiting.
How can I verify Gregory Rubin, M.D.'s license?
NPPES lists Oregon license number MD27694, 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 Gregory Rubin, M.D. prescribe under Medicare Part D?
In 2024, Gregory Rubin, M.D. had 14,041 Medicare Part D claims for 1,227 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.