Dr. Richard Zellars MD Radiation Oncologist

Dr. Richard Zellars is a radiation oncologist in Baltimore, Maryland and is affiliated with multiple hospitals in the area, including Howard County General Hospital and Johns Hopkins Hospital. He received his medical degree from Johns Hopkins University School of Medicine and has been in practice for 23 years. He is one of 12 doctors at Howard County General Hospital and one of 15 at Johns Hopkins Hospital who specialize in Radiation Oncology.

Are you Dr. Zellars? Edit Profile

Office Location

See Contact Information

Specialty & Clinical Interests

Radiation Oncologist: Breast Cancer

Hospital Affiliation

Howard County General Hospital

Johns Hopkins Hospital
Ranked #4 in Cancer

Education & Medical Training

Greater Baltimore Medical Center
Residency, Internal Medicine, 1991–1992

University of Michigan Hospitals and Health Centers
Residency, Radiation Oncology, 1992–1996

Johns Hopkins University School of Medicine
Class of 1991

Certifications & Licensure

American Board of Radiology
Certified 18 years in Radiation Oncology

MD State Medical License
Active through 2015

Publications & Presentations

High-dose-rate intraoperative radiation therapy: the nuts and bolts of starting a program.
Moningi, S.,Armour, E. P.,Terezakis, S. A.,Efron, J. E.,Gearhart, S. L.,Bivalacqua, T. J.,Kumar, R.,Le, Y.,Kien Ng, S.,Wolfgang, C. L.,Zellars, R. C.,Ellsworth, S. G.,Ahuja, N.,Herman, J. M.

SPECT Analysis of Cardiac Perfusion Changes After Whole-Breast/Chest Wall Radiation Therapy With or Without Active Breathing Coordinator: Results of a Randomized Phase 3 Trial.
Zellars, R.,Bravo, P. E.,Tryggestad, E.,Hopfer, K.,Myers, L.,Tahari, A.,Asrari, F.,Ziessman, H.,Garrett-Mayer, E.

Breast Cancer, Version 3.2013.
Theriault, R. L.,Carlson, R. W.,Allred, C.,Anderson, B. O.,Burstein, H. J.,Edge, S. B.,Farrar, W. B.,Forero, A.,Giordano, S. H.,Goldstein, L. J.,Gradishar, W. J.,Hayes, D. F.,Hudis, C. A.,Isakoff, S. J.,Ljung, B. M.,Mankoff, D. A.,Marcom, P. K.,Mayer, I. A.,McCormick, B.,Pierce, L. J.,Reed, E. C.,Schwartzberg, L. S.,Smith, M. L.,Soliman, H.,Somlo, G.,Ward, J. H.,Wolff, A. C.,Zellars, R.,Shead, D. A.,Kumar, R.

See all 23 publications

Report a Correction — If you are aware of information on this page that is out of date or incorrect, please let us know.

Patient Advice & Support


See More
Our Doctor Finder includes most U.S. physicians. Doctors are not ranked, learn more.

Nearby Radiation Oncologists

See all Radiation Oncologists near Baltimore, MD See all Radiation Oncologists in Maryland

Your Message Has Been Submitted

As part of our research on the correction you submitted, you may be contacted at the email address provided.

Sorry, Your Message Could Not Be Submitted

Please try again later, or E-mail your message to doctors@usnews.com and include the Web address (URL) of the page that contains incorrect information.