Jeffrey J. Quackenbush, MD

Medicare activity in 2024

Official CMS public-use data for Jeffrey J. Quackenbush, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Most frequent services

1. Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session (G6015)2,207 services
2. Ct guidance for insertion of radiation therapy fields (77014)1,632 services
3. Intra-fraction localization and tracking of target or patient motion during delivery of radiation therapy (eg,3d positional tracking, gating, 3d surface tracking), each fraction of treatment (G6017)782 services
4. Radiation treatment management, 5 treatment sessions (77427)506 services
5. Continuing radiation therapy consultation per week (77336)485 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

• High blood pressure75%
• High cholesterol75%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)75%
• Arthritis43%
• Ischemic heart disease39%
• COPD33%

Hospitals where Jeffrey J. Quackenbush works

Medicare's Facility Affiliation Data lists Jeffrey J. Quackenbush at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

• Northwest Health - PorterValparaiso, IN · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 150035
• Northwest Health - StarkeKnox, IN · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 150102
• Northwest Health-La PorteLa Porte, IN · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 150006
• St Mary Medical Center IncHobart, IN · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 150034

Practice locations

Addresses where Jeffrey J. Quackenbush is enrolled with Medicare (CMS data updated October 2, 2026).

• 85 E US Hwy 6 100, Porter Radiation OncologyValparaiso, IN 46383 (219) 983‑6100

Specialties

• Radiation Oncologyprimary

Find other Radiation Oncology doctors in Indiana →

Other radiation oncologists in Indiana

Clinicians with the same Medicare primary specialty in Indiana — not a recommendation.

• Andrej Zajac, MD
• Basel M. Altoos, MD
• Douglas R. Debenham, MD
• Brian K. Chang, MD
• Thomas C. Dugan, MD
• Daniel W. Weed, MD
• Naoyuki G. Saito, MD
• Atmaram S. Pai Panandiker, MD

All radiation oncologists in Indiana →

Clinician information

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians