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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

RADIATION ONCOLOGY ASSOCIATES, LTD
NPI 1932154754
Radiology - Radiation Oncology in Milwaukee, WI

Active since May 23, 2006
2900 W OKLAHOMA AVE, MILWAUKEE, WI 53215(414) 649-6420(414) 649-5309 Get Directions Write a Review

NPPES record last updated: September 8, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Sep 8, 2026, Mar 4, 2026 (2 updates tracked since 2026).

About Radiation Oncology Associates, Ltd NPPES

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

RADIATION ONCOLOGY ASSOCIATES, LTD (NPI 1932154754) is a healthcare organization registered as a radiation oncology in Milwaukee, Wisconsin and active in the NPI registry since May 2006. The organization maintains 15 additional practice locations and lists Amy Bock, Administrator, as its authorized official.

NPPES Registry Identity

NPI1932154754
Entity TypeOrganization
Primary Taxonomy2085R0001X
Legal Business NameRADIATION ONCOLOGY ASSOCIATES, LTD
Location Address2900 W OKLAHOMA AVEMilwaukee, WI 53215-4330
Mailing Address11516 N Port Washington Rd Ste 107Mequon, WI 53092-3478 · (262) 241-5040 · Fax (262) 241-5261
Phone(414) 649-6420
Fax(414) 649-5309
Organization SubpartNo
Authorized OfficialAmy BockAdministrator · (262) 241-5040
Enumeration DateMay 23, 2006
Last NPPES UpdateSeptember 8, 20262 updates tracked since enumeration
NPPES CertifiedSeptember 8, 2026
✔ NPI 1932154754 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Radiation OncologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0001X
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.
2900 W OKLAHOMA AVE, Milwaukee, WI 53215
Open in Google Maps ↗

Secondary Practice Locations 15

Location 136500 Aurora DrSummit, WI 53066-4899 · Phone (262) 434-1800
Location 2945 N 12th StMilwaukee, WI 53233-1305 · Phone (414) 219-7140
Location 31222 N 23rd StSheboygan, WI 53081-3171 · Phone (920) 457-6800
Location 47410 W Rawson AveFranklin, WI 53132-8274 · Phone (414) 427-6230
Location 53809 Spring StMount Pleasant, WI 53405-1667 · Phone (262) 687-5000
Location 65300 Memorial DrTwo Rivers, WI 54241-3923 · Phone (920) 793-7349
Location 7855 N Westhaven DrOshkosh, WI 54904-7668 · Phone (920) 456-7900
Location 819333 W North AveBrookfield, WI 53045-4132 · Phone (262) 780-4100
Location 92845 Greenbrier RdGreen Bay, WI 54311-6519 · Phone (920) 288-4160
Location 103003 University DrMarinette, WI 54143-4110 · Phone (715) 735-8015
Location 11975 Port Washington RdGrafton, WI 53024-9201 · Phone (262) 329-5120
Location 128901 W Lincoln AveWest Allis, WI 53227-2409 · Phone (414) 328-6460
Location 132700 W 9th Ave Ste 11Oshkosh, WI 54904-7863 · Phone (920) 831-8900
Location 141506 S Oneida StAppleton, WI 54915-1305 · Phone (920) 831-8900
Location 156811 118th AveKenosha, WI 53142-8420 · Phone (262) 857-5700

Other Identifiers 1

Medicaid32741900WI

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, CareSource (Common Ground Healthcare), Florida Blue (BlueCross BlueShield FL) and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Radiation Oncology Associates, Ltd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

21

Medicare enrollment records show 21 clinicians reassign Medicare billing to Radiation Oncology Associates, Ltd, which bills Medicare for the services they deliver. Of these, 2 practice at this address and 9 within 10 miles. Listed here are the 20 practicing nearest to this location.

Nearest to this location (20)

See all 21
Kelsey Corrigan, MD
Radiation Oncology
NPI 1750841532
2900 W OKLAHOMA AVE
Milwaukee, WI 53215
(414) 649-6420
✔ PECOS✔ Accepts MedicareSame address
Mitchell Pincus, MD
Radiation Oncology
NPI 1265479760
2900 W OKLAHOMA AVE
Milwaukee, WI 53215
(414) 649-6420
✔ PECOS✔ Accepts MedicareSame address
Jeffrey Kittel, M.D.
Radiation Oncology
NPI 1801188230
2900 W OKLAHOMA AVE
Milwaukee, WI 53215
(414) 649-6420
✔ PECOS✔ Accepts Medicare0.1 mi
Kenneth Bastin, MD
Radiation Oncology
NPI 1457393431
2900 W OKLAHOMA AVE
Milwaukee, WI 53215
(414) 649-6420
✔ PECOS✔ Accepts Medicare0.1 mi
Gregory Kauffmann, MD
Radiation Oncology
NPI 1326480245
2900 W OKLAHOMA AVE
Milwaukee, WI 53215
(414) 649-6420
✔ PECOS✔ Accepts Medicare0.1 mi
Daniel Lindsay, M.D.
Radiation Oncology
NPI 1124413422
2900 W OKLAHOMA AVE
Milwaukee, WI 53215
(414) 649-3323
✔ PECOS✔ Accepts Medicare0.1 mi
Jennifer Stanley, M.D.
Radiation Oncology
NPI 1518493105
2900 W OKLAHOMA AVE
Milwaukee, WI 53215
(414) 649-6420
✔ PECOS✔ Accepts Medicare0.1 mi
Aronne Schottstaedt, MD
Radiation Oncology
NPI 1689230070
8850 WILLIAM COFFEY DR
Milwaukee, WI 53226
(707) 776-7135
✔ PECOS✔ Accepts Medicare5.0 mi
Michael Christensen, M.D.
Radiation Oncology
NPI 1497911275
7410 W RAWSON AVE
Franklin, WI 53132
(262) 994-1952
✔ PECOS✔ Accepts Medicare5.8 mi
Shannon Offerman, MD
Radiation Oncology
NPI 1356520506
19333 W NORTH AVE
Brookfield, WI 53045
(262) 780-4100
✔ PECOS✔ Accepts Medicare11 mi
Lewis Rosenberg, MD PHD
Radiation Oncology
NPI 1790974780
3809 SPRING ST
Mount Pleasant, WI 53405
(262) 687-5000
✔ PECOS✔ Accepts Medicare19 mi
Perry Gould, MD
Radiation Oncology
NPI 1417990300
975 PORT WASHINGTON RD
Grafton, WI 53024
(262) 329-5120
✔ PECOS✔ Accepts Medicare23 mi
Ellen Ziaja, MD
Radiation Oncology
NPI 1104868181
36500 AURORA DR
Summit, WI 53066
(262) 434-1800
✔ PECOS✔ Accepts Medicare27 mi
Joshua Elson, MD, MPH
Radiation Oncology
NPI 1669815569
6811 118TH AVE
Kenosha, WI 53142
(262) 857-5750
✔ PECOS✔ Accepts Medicare29 mi
Stanley Gutiontov, MD
Radiation Oncology
NPI 1063803963
1222 N 23RD ST
Sheboygan, WI 53081
(920) 457-6800
✔ PECOS✔ Accepts Medicare54 mi
Michael Hsie, MD
Radiation Oncology
NPI 1265695704
855 N WESTHAVEN DR DEPARTMENT OF RADIATION ONCOLOGY
Oshkosh, WI 54904
(920) 456-7900
✔ PECOS✔ Accepts Medicare79 mi
Sara Beltran Ponce, MD
Radiation Oncology
NPI 1104386671
1506 S ONEIDA ST
Appleton, WI 54915
(920) 831-8900
✔ PECOS✔ Accepts Medicare90 mi
Daniel Hong, MD
Radiation Oncology
NPI 1124605548
2845 GREENBRIER RD
Green Bay, WI 54311
(920) 288-4160
✔ PECOS✔ Accepts Medicare103 mi
David Rohde, MD
Radiation Oncology
NPI 1649213588
2845 GREENBRIER RD
Green Bay, WI 54311
(920) 288-4160
✔ PECOS✔ Accepts Medicare103 mi
Pamela Vanderwall, MD
Radiation Oncology
NPI 1225075609
2845 GREENBRIER RD
Green Bay, WI 54311
(920) 288-4160
✔ PECOS✔ Accepts Medicare103 mi
See all 21 clinicians

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

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 Radiation Oncology Associates, Ltd's NPI number?

The NPI number for Radiation Oncology Associates, Ltd is 1932154754. It was assigned to this organization in the NPPES registry on May 23, 2006.

Where is Radiation Oncology Associates, Ltd located?

Radiation Oncology Associates, Ltd is located at 2900 W Oklahoma Ave, Milwaukee, WI 53215. The listed phone number is (414) 649-6420.

What is Radiation Oncology Associates, Ltd's specialty?

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

Is Radiation Oncology Associates, Ltd enrolled in Medicare?

Yes. Radiation Oncology Associates, Ltd is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Radiation Oncology Associates, Ltd?

According to the CMS Revalidation Reassignment List (October 2026 release), 21 clinicians, all in Radiation Oncology, reassign their Medicare billing to Radiation Oncology Associates, Ltd. A 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 the clinician's services. Of these, 2 practice at this address and 9 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Radiation Oncology Associates, Ltd accept?

Health plans from Anthem Blue Cross and Blue Shield, CareSource (Common Ground Healthcare), Florida Blue (BlueCross BlueShield FL), Florida Blue HMO (a BlueCross BlueShield FL company) and Quartz list Radiation Oncology Associates, Ltd as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Radiation Oncology Associates, Ltd was last updated on September 8, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 59 days 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.