Kevin R. Kozak, MD, PHD
Radiation Oncology Physician · Baraboo, WI
Kevin R. Kozak, MD, PHD is a radiation oncology physician with a practice address in Baraboo, Wisconsin, and NPI 1124219241, issued on Aug 5, 2007. Check the license (Wisconsin 51615, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Kevin R. Kozak
- Credential
- MD, PHD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License numbers
- 51615 WI
ME148357 FL
036121114 IL
Self-reported in NPPES; status is on the state search - Practice location
- 707 14TH St, Baraboo, WI 53913
- Phone
- (608) 356-1400
- Enumerated
- Aug 5, 2007
- Record last updated
- Jun 23, 2025
- Medicaid ID
- 109765700 FL
- Medicare enrollment
- Enrolled (PECOS I20080719000084); accepts Medicare assignment
- Medical or professional school
- Vanderbilt University School Of Medicine, 2003
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 707 14TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alison AllstadtAudiologist1871978510
- Antoinette Ankenbrandt, PAPhysician Assistant1790748622
- Daniel Beaver, MDEmergency Medical Services (Emergency Medicine) Physician1558340539
- Edward Bueno, MDEmergency Medical Services (Emergency Medicine) Physician1568441087
- Reva Decorah, RNRegistered Nurse1487479788
- Daniel Dingmann, MSClinical Exercise Physiologist1568700789
Verify Kevin R. Kozak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 51615Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.9 times the Medicare Part D claims of the average radiation oncology physician in 2024
388 Medicare Part D claims for 145 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. 42 claims were for opioids.
Most prescribed
- Tamsulosin Hcl157 claims
- Oxycodone Hcl25 claims
- Memantine Hcl23 claims
- Gabapentin21 claims
- Lidocaine Hcl Viscous16 claims
- Lorazepam16 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.
Industry payments in 2024: $307.74
4 payments; by number, the most common kind was food and beverage; the largest payer was Inari Medical, Inc. The 3,275 providers of this specialty with any payment received $1,897.85 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 3 group practices
- Mercy Health System CorporationJanesville, WI
- Rockford Health PhysiciansRockford, IL
- Shared Magnetic Resonance Imaging Facility IncMadison, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Radiation Oncology Physician providers in Wisconsin
There are 153 radiation oncology physician records in Wisconsin.
Other radiation oncology physician records in Wisconsin
- Now Bahar Alam, MDEau Claire, WI1508363532
- Bethany Anderson, M.D.Madison, WI1629001417
- Richard Auchter, MDMadison, WI1366404329
- Musaddiq Awan, M.D.Milwaukee, WI1205279957
- James Baer, MDEau Claire, WI1275531493
- Patricia Barrett, MDMadison, WI1184690836
- Darryl BartonWausau, WI1609822774
- Andrew BaschnagelMadison, WI1578793048
- Michael BassettiMadison, WI1639332158
- Kenneth Bastin, MDMilwaukee, WI1457393431
Common questions
What is Kevin R. Kozak, MD, PHD's NPI number?
Kevin R. Kozak, MD, PHD's National Provider Identifier (NPI) is 1124219241, issued on Aug 5, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Kevin R. Kozak, MD, PHD located?
The NPPES record lists a practice address at 707 14TH St, Baraboo, WI, 53913. Phone: (608) 356-1400. Providers update this record themselves, so call before visiting.
How can I verify Kevin R. Kozak, MD, PHD's license?
NPPES lists Wisconsin license number 51615, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Kevin R. Kozak, MD, PHD prescribe under Medicare Part D?
In 2024, Kevin R. Kozak, MD, PHD had 388 Medicare Part D claims for 145 beneficiaries; the average among radiation oncology physician prescribers was 134. 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.