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Keith Cengel, MD, PhD

Keith Cengel, MD, PhD Physician

Associate Professor of Radiation Oncology at the Hospital of the University of Pennsylvania

Dr. Cengel is employed by Penn Medicine.

Patient Satisfaction Ratings

Patient Rating Breakdown

The Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our nationally-recognized Press Ganey Patient Satisfaction Survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.

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Overall Ratings

Clinical Specialties


  • Radiation Oncology

Programs & Centers:

Board Certification:

  • Radiation Oncology, 2008

Clinical Expertise:

  • Bone Cancer
  • Lung Cancer
  • Lung Carcinoid Tumor
  • Mesothelioma
  • Non-Small Cell Lung Cancer
  • Proton Therapy
  • Radiation Treatment
  • Small Cell Lung Cancer

Practice Locations and Appointments

Insurance Accepted

  • Aetna US Healthcare
  • Cigna
  • Cigna HealthSpring
  • Clover Health Plan
  • CVS Health
  • Devon Health Services (Americare)
  • eLAP Services
  • Gateway Health Plan
  • Geisinger Health Plan
  • HealthAmerica / HealthAssurance, a Coventry Plan
  • HealthPartners
  • HealthPartners Medicare
  • HealthSmart
  • Highmark Blue Shield
  • Homestead Smart Health Plans
  • Horizon Blue Cross Blue Shield of New Jersey
  • Humana / Choicecare
  • Independence Blue Cross (Keystone East)
  • Intergroup
  • Keystone First
  • Keystone First Medicare
  • Multiplan
  • NJ Medicaid
  • NJ Qualcare
  • Oxford Health Plan
  • PA Health and Wellness (Centene) Medicare
  • PA Medicaid
  • PA Medicare
  • Preferred Health Care/LGH
  • Provider Partners Health Plan
  • Rail Road Medicare / Palmetto GBA
  • Remedy Partners at Penn Medicine
  • Tricare
  • United Healthcare
  • UnitedHealthcare Community Plan
  • US Family Health Plan
  • Veterans Choice Program

Education and Training

Medical School: University of Illinois School of Medicine
Residency: University of Illinois
Residency: Hospital of the University of Pennsylvania


American Society for Photobiology, International American Society for Radiation Oncology, International American Society for Radiation Therapy (ASTRO), International American Society of Clinical Oncology, International Department of Defense, National Dutch Cancer Society, International International Photodynamic Association, International National Institutes of Health, National National Space Biomedical Research Institute, National National Space Biomedical Research Institute, National Pan American Photodynamic Association, International Radiation Research Society, International SPIE, International

Hospital Affiliation

Dr. Cengel is employed by Penn Medicine.

Hospital Privileges:

  • Chester County Hospital: Has privileges to treat patients in the hospital.
  • Hospital of the University of Pennsylvania: Has privileges to treat patients in the hospital.
  • Penn Presbyterian Medical Center: Has privileges to treat patients in the hospital.
  • Pennsylvania Hospital: Has privileges to treat patients in the hospital.


Description of Research Expertise:

1. Defining Mechanisms and Reducing Toxicity from Normal Tissue Damage Caused by Ionizing Radiation: These projects center on modeling the physical patterns of dose deposition by x-rays, gamma rays and charged particles and determining the mechanism(s) that lead to normal tissue toxicity. From a greater understanding of these mechanisms, these projects seek to identify and formulate potential radiation protectors and mitigators for use in human medicine.

2. Cellular Signaling and PDT cytotoxicity: This project is focused on defining the molecular mechanism by which PDT-initiated growth factor and anti-oxidant signaling leads to decreased PDT-mediated cytotoxicity in human cancer cells and tumors.

3. Clinical trials of RT and PDT: These projects involve using insights gained from pre-clinical studies to design early phase interventional trials for patients with cancers that are difficult to treat using current standard modalities.

Selected Publications:

Sanzari JK, Wan XS, Wroe AJ, Rightnar S, Cengel KA, Diffenderfer ES, Krigsfeld GS, Gridley DS, Kennedy AR: Acute Hematological Effects of Solar Particle Event Proton Radiation in the Porcine Model. Radiat Res. 180 (1): 7-16,2013.

Whaley JT, Kirk M, Cengel K, McDonough J, Bekelman J, Christodouleas JP: Protective Effect of Transparent Film Dressing on Proton Therapy Induced Skin Reactions. Radiat Oncol. 8 : 19,2013.

Cengel KA, Sanzari J, Billings P, Diffenderfer ES, Kennedy AR: Evaluating Radiation Repose And Countermeasures For Exposure To Solar Particle Events With Differing Energy-Fluence Profiles. Heavy Ion in Therapy and Space Radiation Symposium 2013, Chiba, Japan : 2013.

Cengel KA, Sanzari J, Billings P, Diffenderfer ES, Kennedy AR: Determining The Whole Body Radiation Repose To Solar Particle Events With Differing Energy-fluence Profiles. NASA Human Research Program Investigator's Workshop, Galveston, TX : 2013.

Cengel KA, Kennedy AR: NSBRI Center For Acute Radiation Research: Dosimetric and Practical Considerations for Simulating Solar Particle Event Exposure for Earth Based Model Systems. National Space Biomedical Research Institute Radiation Effects Team : 2013.

Chandra A, Lan S, Zhu J, Lin T, Zhang X, Siclari VA, Altman AR, Cengel KA, Liu XS, Qin L.: PTH prevents the adverse effects of focal radiation on bone architecture in young rats. Bone. 55 (2): 449-57,2013.

Pietrofesa R, Turowski J, Tyagi S, Dukes F, Arguiri E, Busch TM, Gallagher-Colombo SM, Solomides CC, Cengel KA, Christofidou-Solomidou M: Radiation mitigating properties of the lignan component in flaxseed. BMC Cancer. 13 : 179,2013.

Edmonds C, Hagan S, Gallagher-Colombo SM, Busch TM, Cengel KA: Photodynamic therapy activated signaling from epidermal growth factor receptor and STAT3: Targeting survival pathways to increase PDT efficacy in ovarian and lung cancer. Cancer Biol Ther. 13 (14): 1463-70,2012.

Cengel K, Yendamuri S, Demmy T, Culligan M, Schofield M, Smith D, Punekar S, Sterman D, Stevenson J, Busch T, Glatstein E, Hahn S, Friedberg J: Qualitative And Quantitative Differences in the Toxicity Of HPPH-Mediated PDT with a 24 Versus 48-Hour Drug Light Interval: Moving from the Bedside to the Bench and Back. SPIE Photonics West, San Francisco, CA : 2012.

Christofidou-Solomidou M, Tyagi S, Pietrofesa R, Dukes F, Arguiri E, Turowski J, Grieshaber PA, Solomides CC, Cengel KA: Radioprotective Role In Lung Of The Flaxseed Lignan Complex Enriched In The Phenolic Secoisolaricresinol Diglucoside (SDG). Radiat Res. 178 (6): 568-80,2012.

Allen AM, Pawlicki T, Dong L, Fourkal E, Buyyounouski M, Cengel K, Plastaras J, Bucci MK, Yock TI, Bonilla L, Price R, Harris EE, Konski AA: An Evidence Based Review of Proton Beam Therapy: The Report of ASTRO's Emerging Technology Committee. Radiother Oncol. 103 (1): 8-11,2012.

Fishbein L, Bonner L, Torigian DA, Nathanson KL, Cohen DL, Pryma D, Cengel KA: External Beam Radiation Therapy (EBRT) for Patients with Malignant Pheochromocytoma and Non-Head and Neck Paraganglioma: Combination with 131I-MIBG. Horm Metab Res. 44 (5): 405-10,2012.

York JM, Blevins NA, Meling DD, Peterlin MB, Gridley DS, Cengel KA, Freund GG: The Biobehavioral and Neuroimmune Impact of Low-Dose Ionizing Radiation. Brain Behav Immun. 26 (2): 218-27,2012.

Christofidou-Solomidou M, Tyagi S, Tan KS, Hagan S, Pietrofesa R, Dukes F, Arguiri E, Heitjan DF, Solomides CC, Cengel KA: Dietary flaxseed administered post-thoracic radiation treatment improves survival and mitigates radiation-induced Pneumonopathy in mice. BMC Cancer. 11 : 269,2011.

Wilson JM, Sanzari JK, Diffenderfer ES, Yee SS, Seykora JT, Maks C, Ware JH, Litt HI, Reetz JA, McDonough J, Weissman D, Kennedy AR, Cengel KA: Acute Biological Effects of Simulating the Whole Body Radiation Dose Distribution from a Solar Particle Event Using a Porcine Model. Radiat Res. 176 (5): 649-59,2011.

Lee JC, Kinniry PA, Arguiri E, Serota M, Kanterakis S, Chatterjee S, Solomides CC, Javvadi P, Koumenis C, Cengel KA, Christofidou-Solomidou M: Dietary curcumin increases antioxidant defenses in lung, ameliorates radiation-induced pulmonary fibrosis, and improves survival in mice. Radiat Res. 173 (5): 590-601,2010.

Hill-Kayser CE, Avery S, Mesina CF, James P, Friedberg JS, Cengel K, Lin LL, Hahn SM, Rengan R: Hemithoracic radiotherapy after extrapleural pneumonectomy for malignant pleural mesothelioma: a dosimetric comparison of two well-described techniques. J Thorac Oncol. 4 (11): 1431-7,2009.

Lee JC, Krochak R, Blouin A, Kanterakis S, Chatterjee S, Arguiri E, Vachani A, Solomides CC, Cengel KA, Christofidou-Solomidou M: Dietary flaxseed prevents radiation-induced oxidative lung damage, inflammation and fibrosis in a mouse model of thoracic radiation injury. Cancer Biol Ther. 8 (1): 43-9,2008.

Machtay M, Scherpereel A, Santiago J, Lee J, McDonough J, Kinniry P, Arguiri E, Shuvaev VV, Sun J, Cengel K, Solomides CC, Christofidou-Solomidou M: Systemic polyethylene glycol-modified (PEGylated) superoxide dismutase and catalase mixture attenuates radiation pulmonary fibrosis in the C57/bl6 mouse. Radiother Oncol. 81 (2): 196-205,2006.

View all publications

Academic Contact Info

Smilow Center for Translational Research, Room 8-136
Univ of Pennsylvania, Perelman School of Medicine
3400 Civic Center Blvd, Bldg 421

Philadelphia, PA 19104
Phone: (215) 898-1035
Patient appointments: 800-789-7366 (PENN)

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