Stephen Bader, MD
NPI 1790787422 · Radiation Oncology Physician · Portland, OR
Stephen Bader, MD is a Radiation Oncology Physician provider in Portland, OR (NPI 1790787422).
Provider details
- NPI number
- 1790787422
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD17045 (OR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
21 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.
| Drug | Part D claims (2024) |
|---|---|
| Tamsulosin Hcl | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 9280 Se Sunnybrook Blvd Ste 100Clackamas, OR 97015-9315Phone: (503) 513-3300Fax: (503) 513-3310
Registry dates
- Enumerated
- 2005-08-12
- Last updated
- 2023-12-05
- Certified
- 2021-12-02
Frequently asked questions
- What is Stephen Bader's NPI number?
- Stephen Bader's National Provider Identifier (NPI) is 1790787422, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Bader's specialty?
- Stephen Bader is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Bader located?
- Stephen Bader's practice location on file with NPPES is 4805 Ne Glisan St, Portland, OR 97213-2933.
- What is Stephen Bader's phone number?
- The practice phone number listed in the NPPES registry for Stephen Bader is (503) 215-6029.
- Is Stephen Bader's NPI active?
- Yes — Stephen Bader's NPI (1790787422) is active in the NPPES registry as of the last update on 2023-12-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.