Preeti K. Parhar

Medicare activity in 2024

Official CMS public-use data for Preeti K. Parhar, 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. Ct guidance for insertion of radiation therapy fields (77014)574 services
2. Radiation treatment management, 5 treatment sessions (77427)190 services
3. Calculation of radiation therapy dose (77300)141 services
4. Design and construction of complex radiation treatment device (77334)116 services
5. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)97 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%
• Arthritis44%
• Ischemic heart disease37%
• Anxiety32%

Hospitals where Preeti K. Parhar works

Medicare's Facility Affiliation Data lists Preeti K. Parhar 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.

• Advocate Good Samaritan HospitalDowners Grove, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140288
• Advocate Illinois Masonic Medical CenterChicago, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140182

Practice locations

Addresses where Preeti K. Parhar is enrolled with Medicare (CMS data updated October 2, 2026).

• 4405 Weaver PkwyWarrenville, IL 60555 (630) 352‑5350
• 4455 Weaver PkwyWarrenville, IL 60555 (630) 821‑6400

Group practices

Medicare enrollment lists Preeti K. Parhar as a member of this group (CMS data updated October 2, 2026).

• Radiation Oncology Consultants, Ltd19 clinicians in the group

Specialties

• Radiation Oncologyprimary

Find other Radiation Oncology doctors in Illinois →

Other radiation oncologists in Warrenville

Clinicians with the same Medicare primary specialty in Warrenville, IL — not a recommendation.

• Neal Andruska, MD
• Daniella P. Dang, MD
• Nasiruddin Mohammed, MD
• Adil S. Akthar, MD
• Anne R. McCall, MD
• William F. Hartsell, MD
• Nguyen D. Dang, MD
• Dean J. Conterato, MD

All radiation oncologists in Warrenville →

Other clinicians in Radiation Oncology Consultants, Ltd

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Ryan M. Rhome, MD
• James E. Ruffer, MD
• Alexander Harris, MD
• Arica Hirsch, MD
• Catherine Park Leonard, MD
• Ian Winter, MD

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