Ryan K. Nowak, MD
Radiation Oncology Physician · Sioux Falls, SD
Ryan K. Nowak, MD is a radiation oncology physician with a practice address in Sioux Falls, South Dakota, and NPI 1265691133, issued on Jun 5, 2008. Check the license (South Dakota 9128, as entered in NPPES) on the South Dakota Board of Medical and Osteopathic Examiners; the Medicare figures below come from public CMS files.
- Name
- Ryan K. Nowak
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- 9128 SD
Self-reported in NPPES; status is on the state search - Practice location
- 1309 W 17TH St, Sioux Falls, SD 57104
- Phone
- (605) 328-6001
- Enumerated
- Jun 5, 2008
- Record last updated
- Aug 26, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (605) 328-6045
- Medicare enrollment
- Enrolled (PECOS I20160502001013); accepts Medicare assignment
- Medical or professional school
- University Of Connecticut School Of Medicine, 2008
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 22 in South Dakota → Look up another NPI →
Also registered at 1309 W 17TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jonathan Bleeker, MDHematology & Oncology Physician1457573974
- Joseph Driewer, PHDRadiological Physics Physician1376499038
- Laurie Gromer, CNPNurse Practitioner1851361216
- Susan Halbritter, CNPNurse Practitioner1295788271
- Kimberly Hamer, DNP, CNP, FNP-CNurse Practitioner1497127005
- Ashley Heupel, CNPAcute Care Nurse Practitioner1316829534
Verify Ryan K. Nowak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Dakota Board of Medical and Osteopathic Examiners
Search for license 9128Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
43% fewer Medicare Part D claims than the average radiation oncology physician in 2024
76 Medicare Part D claims for 35 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.
Most prescribed
- Memantine Hcl16 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 76.7 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Sanford ClinicWorthington, MN
- Sanford Medical CenterSioux Falls, SD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ryan K. Nowak among 22 radiation oncology physician records in South Dakota
Ryan K. Nowak, MD is one of 22 radiation oncology physician records with a practice address in South Dakota. 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 2008, is newer than 73% of them.
- NPI issued2008 · 73% of these records are older, 23% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2008 · median 2003 among the 16 with a school on file
- Record last updated2014 · 73% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in South Dakota
There are 22 radiation oncology physician records in South Dakota.
All 22 in South Dakota → Every provider in Sioux Falls → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Michele Lohr, M.D.Sioux Falls, SD 571041215908686
- Steven McGraw, MDSioux Falls, SD 571041396702338
- Na SmithSioux Falls, SD 571041811350218
- Kyle Arneson, M.D.Sioux Falls, SD 571051760625768
- Kirsten Erickson, MDSioux Falls, SD 571051336100247
- Joel Grow, MDSioux Falls, SD 571051710270061
- Charles Murphy, MDSioux Falls, SD 571051821293952
- Collin Noldner, MDSioux Falls, SD 571051063076719
Common questions
What is Ryan K. Nowak, MD's NPI number?
Ryan K. Nowak, MD's National Provider Identifier (NPI) is 1265691133, issued on Jun 5, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Ryan K. Nowak, MD located?
The NPPES record lists a practice address at 1309 W 17TH St, Sioux Falls, SD, 57104. Phone: (605) 328-6001. Providers update this record themselves, so call before visiting.
How can I verify Ryan K. Nowak, MD's license?
NPPES lists South Dakota license number 9128, as entered by the provider. Search the South Dakota Board of Medical and Osteopathic Examiners at https://www.sdbmoe.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ryan K. Nowak, MD prescribe under Medicare Part D?
In 2024, Ryan K. Nowak, MD had 76 Medicare Part D claims for 35 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
What is Ryan K. Nowak, MD's MIPS final score?
The 2023 MIPS final score is 76.7 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.