
Join to view full profile
5501 Old York RoadLevy Grd FlPhiladelphia, PA 19141
Phone+1 215-456-6280
Fax+1 215-457-0270
Dr. Zeitzer is on Doximity
As a Doximity member, you’ll join more than three million U.S. healthcare professionals—including 85+% of physicians, and 2/3 of all NPs and PAs—in a private, secure network.
- Gain access to free telehealth tools, such as our “call shielding” and one-way patient texting.
- Connect with colleagues in the same hospital or clinic.
- Read the latest clinical news, personalized to your specialty.
Education & Training
Sidney Kimmel Medical College at Thomas Jefferson University/TJUHResidency, Radiation Oncology, 1989 - 1993
Albert Einstein Healthcare NetworkInternship, Internal Medicine, 1988 - 1989
Sidney Kimmel Medical College at Thomas Jefferson UniversityClass of 1988
Certifications & Licensure
PA State Medical License 1992 - 2026
American Board of Radiology Radiation Oncology
Awards, Honors, & Recognition
- Philadelphia Magazine Castle Connolly, 2011-2014
Clinical Trials
- Interstitial Brachytherapy With or Without External-Beam Radiation Therapy in Treating Patients With Prostate Cancer
- Radiation Therapy (WBI Versus PBI) in Treating Women Who Have Undergone Surgery For Ductal Carcinoma In Situ or Stage I or Stage II Breast Cancer
- Prostate Radiation Therapy or Short-Term Androgen Deprivation Therapy and Pelvic Lymph Node Radiation Therapy With or Without Prostate Radiation Therapy in Treating Patients With a Rising Prostate Specific Antigen (PSA) After Surgery for Prostate Cancer
Publications & Presentations
PubMed
- Lumpectomy Margins and Local Recurrence in DCIS: Results From the NRG Oncology/NSABP B-35 Randomized Clinical Trial.Irene L Wapnir, Reena S Cecchini, James J Dignam, Stewart J Anderson, Jiahe Li
JAMA Surgery. 2026-07-01 - 1 citationsBiopsy-based Basal-luminal Subtyping Classifier in High-risk Prostate Cancer: A Combined Analysis of the NRG Oncology/RTOG 9202, 9413, and 9902 Phase 3 Trials.Krishnan R Patel, Paul L Nguyen, James A Proudfoot, Yang Liu, Alan Dal Pra
European Urology Oncology. 2026-04-01 - 1 citationsPhase II Study of Low-Dose Paclitaxel and Cisplatin in Combination With Split-Course Concomitant Twice-Daily Reirradiation in Recurrent Squamous Cell Carcinoma of the ...Corey J Langer, Jonathan Harris, Eric M Horwitz, Merrill Kies, Voichita Bar Ad
International Journal of Radiation Oncology, Biology, Physics. 2026-01-01
Viewing the full profile is available to verified healthcare professionals only.
Find your profile and take control of your online presence:









