
Overview
Matthew Ladra, M.D., M.P.H., leads the dedicated pediatric team for the Johns Hopkins Proton Therapy Center and is the director of pediatric radiation oncology for the Johns Hopkins Kimmel Cancer Center, a clinical collaboration with Children’s National Hospital, where Dr. Ladra serves as faculty in the department of pediatric oncology. He is also an assistant professor of radiation oncology and molecular radiation sciences at the Johns Hopkins School of Medicine. Listen Dr. Ladra's Cancer Matters podcast episode to learn more about his work. Previously, Dr. Ladra served as the director of pediatric radiation at the Provision Center for Proton Therapy in Tennessee. He also completed a 2-year fellowship in pediatric proton therapy at the Massachusetts General Hospital’s Francis H. Burr Proton Center. Dr. Ladra is one of a handful of radiation oncologists whose research and clinical efforts focus exclusively on pediatric patients. He is frequently invited to speak on pediatric radiation oncology topics internationally and across the U.S. and has published extensively on the subject through original research book chapters and review articles. Dr. Ladra’s research efforts focus mainly on pediatric rhabdomyosarcoma treatment, early phase clinical trials involving radiation and non-chemotherapeutic agents, and reducing neurocognitive toxicity for pediatric brain tumor patients. LinkedIn https://www.linkedin.com/in/matthew-ladra-3094a316.
Dr. Ladra is rated as an Advanced provider by MediFind in the treatment of Embryonal Tumor with Multilayered Rosettes. His top areas of expertise are Rhabdomyosarcoma, Muscle Invasive Bladder Cancer, Adult Soft Tissue Sarcoma, and Ependymoma.
His clinical research consists of co-authoring 35 peer reviewed articles and participating in 1 clinical trial. MediFind looks at clinical research from the past 15 years. In particular, he has co-authored 5 articles in the study of Embryonal Tumor with Multilayered Rosettes.
Insurance
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Accepted insurance plans:
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- HMO
- POS
- PPO
- HMO
- POS
- PPO
- EPO
- HMO
- PPO
- INSURANCE PLAN
- MEDICARE PDP
- PPO
- HMO
- POS
- PPO
- HMO
- INDEMNITY
- POS
- PPO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE PART D
- EPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE
- OTHER MEDICARE PART D
Locations
5255 Loughboro Road Northwest, Washington, DC 20016
Clinical Research
Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.
1 Clinical Trials
Sidney Kimmel Comprehensive Cancer Center
Dr. Kleinberg specializes in the radiation treatments, including stereotactic radiosurgery, of brain and spinal tumors. Areas of research include both tumors arising in the central nervous system and tumors metastasizing from other locations. He also specializes in the treatment of esophageal tumors and has led national clinical trials in both therapy of brain tumors as well as esophageal cancer. Dr. Kleinberg has been recently named in the US News and World Report list of top 1% of doctors in his specialty. He is the co-chair of the Eastern Cooperative Oncology Group Brain Tumor Working Group, Vice-Chair of the NCI Cooperative Group Steering Committee for Esophageal and Gastric Tumors, and is a member of the NCI Cooperative Group Steering Committee for Gastrointestinal Tumors. He is also on the American College of Radiation Oncology Neurologic Cancer Practice Accreditation Team. Make A Gift. Dr. Kleinberg is rated as an Elite provider by MediFind in the treatment of Embryonal Tumor with Multilayered Rosettes. His top areas of expertise are Glioblastoma, Astrocytoma, Brain Tumor, Hepato-Pancreato-Biliary Surgery, and Gamma Knife Radiosurgery.
University Of Maryland Radiation Oncology Associates PA
Mark Mishra is a Radiation Oncologist in Baltimore, Maryland. Dr. Mishra is rated as a Distinguished provider by MediFind in the treatment of Embryonal Tumor with Multilayered Rosettes. His top areas of expertise are Metastatic Brain Tumor, Astrocytoma, Brain Tumor, Meningioma, and Prostatectomy. Dr. Mishra is currently accepting new patients.
Sibley Memorial Hospital
Victoria J. Croog, M.D., Department of Radiation Oncology at the Johns Hopkins Kimmel Cancer Center at Sibley Memorial Hospital, as well as a clinical associate in the Department of Radiation Oncology at The Johns Hopkins Hospital. Dr. Croog has expertise in breast cancer, gastrointestinal cancer, gynecologic cancer, brain cancer and tumors of the central nervous system. Dr. Croog earned her medical degree from Harvard Medical School. She completed an internship and a residency in radiation oncology at Memorial Sloan-Kettering Cancer Center. Dr. Croog is involved with several committees at Sibley Memorial Hospital, including the Medical Executive Committee, the IRB/Research Review Committee, the Cancer Committee and the Radiation Safety Committee. She is also a member of the American Society of Clinical Oncology and the American Society of Radiation Oncology. Dr. Croog has been repeatedly named a Top Doctor by Washingtonian Magazine. Dr. Croog has been published in numerous peer-reviewed journals and has presented research at various conferences, such as the American Society of Clinical Oncology’s annual meeting. Make A Gift LinkedIn https://www.linkedin.com/in/victoria-croog-88a31759. Dr. Croog is rated as a Distinguished provider by MediFind in the treatment of Embryonal Tumor with Multilayered Rosettes. Her top areas of expertise are Gliosarcoma, Astrocytoma, Posterior Fossa Tumor, and Endometrial Cancer.
Areas of Expertise
MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.
Learn more about MediFind’s expert tiers
- Distinguished
- RhabdomyosarcomaDr. Ladra isDistinguished. Learn about Rhabdomyosarcoma.
- Advanced
- Adult Soft Tissue SarcomaDr. Ladra isAdvanced. Learn about Adult Soft Tissue Sarcoma.
- Brain TumorDr. Ladra isAdvanced. Learn about Brain Tumor.
- Embryonal Tumor with Multilayered Rosettes
- EpendymomaDr. Ladra isAdvanced. Learn about Ependymoma.
- Ewing SarcomaDr. Ladra isAdvanced. Learn about Ewing Sarcoma.
- Muscle Invasive Bladder CancerDr. Ladra isAdvanced. Learn about Muscle Invasive Bladder Cancer.
- Experienced
- AstrocytomaDr. Ladra isExperienced. Learn about Astrocytoma.
- Atypical Teratoid Rhabdoid Tumor (ATRT)
- Bone TumorDr. Ladra isExperienced. Learn about Bone Tumor.
- Cholangiocarcinoma (Bile Duct Cancer)Dr. Ladra isExperienced. Learn about Cholangiocarcinoma (Bile Duct Cancer).
- Choroid Plexus PapillomaDr. Ladra isExperienced. Learn about Choroid Plexus Papilloma.
- Diffuse Midline Glioma H3 K27M-MutantDr. Ladra isExperienced. Learn about Diffuse Midline Glioma H3 K27M-Mutant.

