Scot Carson Callahan, MD, PHD
Radiation Oncology Physician · Madison, WI
Scot Carson Callahan, MD, PHD is a radiation oncology physician with a practice address in Madison, Wisconsin, and NPI 1700527959, issued on Apr 3, 2022. Check the license (Wisconsin 83003, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Scot Carson Callahan
- Credential
- MD, PHD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- 83003 WI
Self-reported in NPPES; status is on the state search - Practice location
- 749 University Row Ste 200, Madison, WI 53705
- Phone
- (608) 263-6400
- Enumerated
- Apr 3, 2022
- Record last updated
- Aug 4, 2025
- Medicare enrollment
- Enrolled (PECOS I20250814003092); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 153 in Wisconsin → Look up another NPI →
Also registered at 749 University Row Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Anas Abed, MDInternal Medicine Physician1659002566
- Alyssandra Abrenica, MDStudent in an Organized Health Care Education/Training Program1427748425
- Mary Adenhamm, MDStudent in an Organized Health Care Education/Training Program1982450151
- Riddhima Agarwal, MD, MSStudent in an Organized Health Care Education/Training Program1508595844
- Lindsay Aldrich, MD MPHStudent in an Organized Health Care Education/Training Program1841132685
- Colleen Alexander, MD MS RD LDAnatomic Pathology & Clinical Pathology Physician1417322405
Verify Scot Carson Callahan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 83003Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4% fewer Medicare Part D claims than the average radiation oncology physician in 2024
128 Medicare Part D claims for 65 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. 39 claims were for opioids.
Most prescribed
- Oxycodone Hcl25 claims
- Lorazepam15 claims
- Lidocaine Hcl Viscous11 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.
Scot Carson Callahan among 153 radiation oncology physician records in Wisconsin
Scot Carson Callahan, MD, PHD is one of 153 radiation oncology physician records with a practice address in Wisconsin. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 98% of them.
- NPI issued2022 · 98% of these records are older, 1% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 78% of these records are
- Graduated2022 · median 2008 among the 119 with a school on file
- Record last updated2025 · 44% 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 Wisconsin 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 Wisconsin
There are 153 radiation oncology physician records in Wisconsin.
All 153 in Wisconsin → Every provider in Madison → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Bradley Eckelmann, MD, PHDMadison, WI 537051033799531
- John Floberg, M.D., PH.D.Madison, WI 537051225456981
- Steven Howard, MD PHDMadison, WI 537051124081740
- Randall Kimple, M.D. PH.D.Madison, WI 537051326253998
- Sangjune Lee, MDMadison, WI 537051922652510
- Peter Mahler, MD PHDMadison, WI 537051730142258
- Matthew Witek, MDMadison, WI 537031154651727
- Richard Auchter, MDMadison, WI 537131366404329
Common questions
What is Scot Carson Callahan, MD, PHD's NPI number?
Scot Carson Callahan, MD, PHD's National Provider Identifier (NPI) is 1700527959, issued on Apr 3, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Scot Carson Callahan, MD, PHD located?
The NPPES record lists a practice address at 749 University Row Ste 200, Madison, WI, 53705. Phone: (608) 263-6400. Providers update this record themselves, so call before visiting.
How can I verify Scot Carson Callahan, MD, PHD's license?
NPPES lists Wisconsin license number 83003, 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 Scot Carson Callahan, MD, PHD prescribe under Medicare Part D?
In 2024, Scot Carson Callahan, MD, PHD had 128 Medicare Part D claims for 65 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.