James D. Kolker, MD
Radiation Oncology
Accepting new patients
Sees patients age 18 and up
Penn Radiation Oncology Penn Presbyterian
Penn Medicine Provider

About me

  • Clinical Associate Professor of Radiation Oncology

Education and training

  • Medical School: Thomas Jefferson University Sidney Kimmel Medical College
  • Residency: Roger Williams Memorial Medical Center
  • Residency: University of Chicago Medical Center

What my patients think about me

Average Rating

223 reviews

Comments are submitted by patients and reflect their views and opinions. The comments are not endorsed by and do not necessarily reflect the views of Penn Medicine.

October 2025
he talked very clearly about my situation
September 2025
professionalism
August 2025
very peaceful spirit
August 2025
i feel comfortable that he is competent.

Insurance accepted

My Locations

Penn Medicine hospital privileges

  • Hospital of the University of Pennsylvania: Has privileges to treat patients in the hospital.
  • Pennsylvania Hospital: Has privileges to treat patients in the hospital.
  • Penn Presbyterian Medical Center: Has privileges to treat patients in the hospital.
  • Chester County Hospital: Has privileges to treat patients in the hospital.
Dr. Kolker is a Penn Medicine physician.

Qualifications and experience

Treatments and Conditions

My research

Elizabeth A Hahn, et al. Validation of Patient-Reported Outcomes in Patients With Nonmetastatic Breast Cancer receiving Comprehensive Nodal Irradiation in the RadComp Trial , International Journal of Radiation Oncology Biology Physics: 2024,S0360-3016


Brian C. Baumann, MD1, 2*, Karen De Amorim Bernstein, MD3*, Thomas F. Delaney, MD, FASTRO3, Charles B. Simone II, MD4, James D. Kolker, MD2, Edwin Choy, MD5, William P. Levin, MD2, Kristy L. Weber, MD6, Ashok Muniappan, MD7, Abigail T. Berman, MD, MSCE2, Arthur Staddon, MD8, Lee Hartner, MD7, Brian Van Tine, MD, PhD9, Angela Hirbe, MD, PhD9, Eli Glatstein, MD, FASTRO2, Stephen M. Hahn, MD, FASTRO10, Suneel N. Nagda, MD2‡, Yen-Lin Chen, MD3‡ Multi-institutional analysis of stereotactic body radiotherapy for sarcoma pulmonary metastases: High rates of local control with favorable toxicity , Journal of Surgical Oncology, 122(5): 2020,877-883


Ruangkanchanasetr R, Lee JYK, Nagda SN, Geiger GA, Kolker JD, Bigelow DC, Ruckenstein MJ, Nasrallah M, Alonso-Basanta M. Toxicity of Gamma Knife Radiosurgery May Be Greater in Patients with Lower Cranial Nerve Schwannomas. , J Neurol Surg B Skull Base. 2018 Dec;79(6):580-585. doi: 10.1055/s-0038-1651504. Epub 2018 May 10, 79(6): 2018,580


Mahadevan A, Blanck O, Lanciano R, Peddada A, Sundararaman S, D'Ambrosio D, Sharma S, Perry D, Kolker J, Davis J. Stereotactic Body Radiotherapy (SBRT) for liver metastasis - clinical outcomes from the international multi-institutional RSSearch® Patient Registry. , Radiat Oncol., 13(1): 2018,26


Ricco A, Davis J, Rate W, Yang J, Perry D, Pablo J, D'Ambrosio D, Sharma S, Sundararaman S, Kolker J, Creach KM, Lanciano R. Lung metastases treated with stereotactic body radiotherapy: the RSSearch® patient Registry's experience. , Radiat Oncol., 12(1): 2017,35


Baumann BC, Nagda SN, Kolker JD, Levin WP, Weber KL, Berman AT, Staddon A, Hartner L, Hahn SM, Glatstein E, Simone CB 2nd. Efficacy and safety of stereotactic body radiation therapy for the treatment of pulmonary metastases from sarcoma: A potential alternative to resection. , J Surg Oncol., 114(1): 2016,65-9


Chowdhury IH, Ojerholm E, McMillan MT, Miller D, Kolker JD, Kurtz G, Dorsey JF, Nagda SN, Geiger GA, Brem S, O'Rourke DM, Zager EL, Gangadhar T, Schuchter L, Lee JY, Alonso-Basanta M. Novel risk scores for survival and intracranial failure in patients treated with radiosurgery alone to melanoma brain metastases. Dec 1;10:248. doi: 10.1186/s13014-015-0553-y. PMID: 26626714 , Radiat Oncol., 10: 2015,248


Vogel J, Ojerholm E, Hollander A, Briola C, Mooij R, Bieda M, Kolker J, Nagda S, Geiger G, Dorsey J, Lustig R, O'Rourke DM, Brem S, Lee J, Alonso-Basanta M. Intracranial control after Cyberknife radiosurgery to the resection bed for large brain metastases. , Radiat Oncol., 31(10): 2015,221


Ojerholm E, Lee JY, Thawani JP, Miller D, O'Rourke DM, Dorsey JF, Geiger GA, Nagda S, Kolker JD, Lustig RA, Alonso-Basanta M. Stereotactic radiosurgery to the resection bed for intracranial metastases and risk of leptomeningeal carcinomatosis , Journal of Neurosurgery, 121.(Suppl): 2014,75-83


Eric Ojerholm, John Y.K. Lee, James Kolker, Robert Lustig, Jay F. Dorsey and Michelle Alonso-Basanta Gamma knife radiosurgery to four or more metastases in patients without prior intracranial radiation or surgery. , Cancer Medicine, 3(3): 2014,565-71