Gregory Rubin, M.D.
NPI 1326269721 · Internal Medicine Physician · Portland, OR
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Rubin, M.D. is a Internal Medicine Physician provider in Portland, OR (NPI 1326269721).
Provider details
- NPI number
- 1326269721
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD60648472 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
23 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 23 | $102 |
Typical Medicare-allowed amounts for these services range $102–$102 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 167 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 834 | 246 |
| Lisinopril | 688 | 208 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 502 | 112 |
| Oxycodone Hcl | 488 | 100 |
| Amlodipine Besylate | 438 | 136 |
| Levothyroxine Sodium | 401 | 109 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-01
- Last updated
- 2025-12-17
- Certified
- 2025-12-17
Frequently asked questions
- What is Gregory Rubin's NPI number?
- Gregory Rubin's National Provider Identifier (NPI) is 1326269721, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Rubin's specialty?
- Gregory Rubin is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Rubin located?
- Gregory Rubin's practice location on file with NPPES is 19500 Se Stark St, Portland, OR 97233-5757.
- What is Gregory Rubin's phone number?
- The practice phone number listed in the NPPES registry for Gregory Rubin is (503) 669-3900.
- Does Gregory Rubin accept Medicare?
- Gregory Rubin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Rubin's NPI active?
- Yes — Gregory Rubin's NPI (1326269721) is active in the NPPES registry as of the last update on 2025-12-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.