Ryan Nowak, MD
NPI 1265691133 · Radiation Oncology Physician · Sioux Falls, SD
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ryan Nowak, MD is a Radiation Oncology Physician provider in Sioux Falls, SD (NPI 1265691133).
Provider details
- NPI number
- 1265691133
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,680 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) |
|---|---|---|
| Ct Guidance for Insertion of Radiation Therapy Fields77014 | 512 | $42 |
| Calculation of Radiation Therapy Dose77300 | 276 | $31 |
| Design and Construction of Complex Radiation Treatment Device77334 | 184 | $57 |
| Stereoscopic X-Ray Guidance for Localization of Target Volume for the Delivery of Radiation TherapyG6002 | 152 | $20 |
| Radiation Treatment Management, 5 Treatment Sessions77427 | 111 | $179 |
| Complex Radiation Therapy Planning77263 | 66 | $156 |
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) |
|---|---|
| Memantine Hcl | 16 |
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
Registry dates
- Enumerated
- 2008-06-05
- Last updated
- 2014-08-26
Frequently asked questions
- What is Ryan Nowak's NPI number?
- Ryan Nowak's National Provider Identifier (NPI) is 1265691133, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ryan Nowak's specialty?
- Ryan Nowak is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Ryan Nowak located?
- Ryan Nowak's practice location on file with NPPES is 1309 W 17th St, Sioux Falls, SD 57104-4663.
- What is Ryan Nowak's phone number?
- The practice phone number listed in the NPPES registry for Ryan Nowak is (605) 328-6001.
- Does Ryan Nowak accept Medicare?
- Ryan Nowak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ryan Nowak's NPI active?
- Yes — Ryan Nowak's NPI (1265691133) is active in the NPPES registry as of the last update on 2014-08-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.