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SCOT CARSON CALLAHAN JR. MD, PHD
NPI 1700527959
Radiology - Radiation Oncology in Madison, WI

Active since April 03, 2022PECOS Enrolled
749 UNIVERSITY ROW STE 200, MADISON, WI 53705(608) 263-6400 Get Directions Write a Review

NPPES record last updated: August 4, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Scot Carson Callahan Jr. Md, Phd NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

SCOT CARSON CALLAHAN JR. MD, PHD (NPI 1700527959) is an individual radiation oncology provider in Madison, Wisconsin, licensed in Wisconsin (83003) and active in the NPI registry since April 2022. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1700527959
Entity TypeIndividualMale
Primary Taxonomy2085R0001X
Provider Legal NameSCOT CARSON CALLAHAN JR.Credential: MD, PHD
Location Address749 UNIVERSITY ROW STE 200Madison, WI 53705-1465
Mailing Address749 University Row Ste 200Madison, WI 53705-1465
Phone(608) 263-6400
Sole ProprietorNo
Enumeration DateApril 3, 2022
Last NPPES UpdateAugust 4, 2025
NPPES CertifiedAugust 4, 2025
✔ NPI 1700527959 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Radiation OncologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0001X
License✔ Licensed in WI · 83003
Definition
A radiologist who deals with the therapeutic applications of radiant energy and its modifiers and the study and management of disease, especially malignant tumors.
749 UNIVERSITY ROW STE 200, Madison, WI 53705
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Scot Carson Callahan Jr. Md, Phd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Scot Callahan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mercy Health System Corporation
35 mi
General Acute Care Hospital
1000 MINERAL POINT AVE
Janesville, WI 53548
  • Reassigned Medicare billing, Wisconsin enrollment
  • 1,155 clinicians in this Medicare group
NPI 1093768962 (608) 756-6000
Rockford Health Physicians
57 mi
Anesthesiology
2400 N ROCKTON AVE
Rockford, IL 61103
  • Reassigned Medicare billing, Illinois enrollment
  • 1,375 clinicians in this Medicare group
NPI 1023275278 (815) 971-5000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 53705 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$163.24 typical visit price
range $53.90 – $163.24
Typical copayment $40.81 (range $13.47 – $40.81)
Most-billed visit code 99205
Established Patient
$67.37 typical visit price
range $17.40 – $133.76
Typical copayment $16.84 (range $4.35 – $33.44)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. LEAH MERRELL GOBER MD
Student in an Organized Health Care Education/Training Program
749 UNIVERSITY ROW STE 200
MADISON, WI 53705
Dane County (608) 263-6400
SAMUEL MICHAEL KEFER MD
Emergency Medicine
749 UNIVERSITY ROW STE 200
MADISON, WI 53705
Dane County (608) 263-6400
ANKITHA MADDE
Obstetrics & Gynecology
749 UNIVERSITY ROW STE 200
MADISON, WI 53705
Dane County (608) 263-6400
JACOB ALEXANDER BETHEL MD
Student in an Organized Health Care Education/Training Program
749 UNIVERSITY ROW STE 200
MADISON, WI 53705
Dane County (608) 263-6400
DR. SWETHA RAVI DO
Student in an Organized Health Care Education/Training Program
749 UNIVERSITY ROW STE 200
MADISON, WI 53705
Dane County (608) 263-6400
DR. WARDAH RAFAQAT M.B.B.S.
Surgery
749 UNIVERSITY ROW STE 200
MADISON, WI 53705
Dane County (608) 263-6400
NNENNA ESTHER OKAFOR MD
Student in an Organized Health Care Education/Training Program
749 UNIVERSITY ROW STE 200
MADISON, WI 53705
Dane County (608) 263-6400
CALEB JOHN SCHULZ MD
Student in an Organized Health Care Education/Training Program
749 UNIVERSITY ROW STE 200
MADISON, WI 53705
Dane County (608) 263-6400

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Scot Callahan's NPI number?

The NPI number for Scot Callahan is 1700527959. It was assigned to this individual provider in the NPPES registry on April 3, 2022.

Where is Scot Callahan located?

Scot Callahan practices at 749 University Row Ste 200, Madison, WI 53705. The listed phone number is (608) 263-6400.

What is Scot Callahan's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.

Is Scot Callahan enrolled in Medicare?

Yes. Scot Callahan is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Scot Callahan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Scot Callahan reassigns Medicare benefits to 2 organizations: Mercy Health System Corporation (Janesville, WI) and Rockford Health Physicians (Rockford, IL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Scot Callahan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Scot Callahan was last updated on August 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.