Adam Levin, MD, joined the Johns Hopkins Department of Orthopaedic Surgery as an assistant professor in orthopaedic oncology. Dr. Levin comes to Johns Hopkins after working as an orthopaedic oncologist at the North Shore/LIJ Health System in New York. He completed his residency in orthopaedic surgery at Long Island Jewish Medical Center, and a fellowship in orthopaedic oncology at the Memorial Sloan-Kettering Cancer Center. Dr. Levin offers care and consultations for adults and children with bone and soft tissue tumors of the pelvis and extremities. He has extensive experience in performing limb-sparing and complex extremity reconstruction surgeries. Dr. Levin has a special interest in surgical palliation and biologic reconstruction. Dr. Levin is a member of the American Academy of Orthopaedic Surgeons and the Musculoskeletal Tumor Society. Dr. Levin is rated as a Distinguished provider by MediFind in the treatment of Osteosarcoma. His top areas of expertise are Adult Soft Tissue Sarcoma, Osteosarcoma, Ollier Disease, Hip Replacement, and Osteotomy.

Dr. Meyer will serve as the lead medical oncologist for adult sarcoma patients, and will focus on building the Adult Sarcoma and Connective Tissue Oncology Program. In collaboration with pediatric oncologist David Loeb, M.D., Ph.D., and orthopaedic surgeon Kristy Weber, M.D., Meyer will bring novel therapies to the clinic for sarcoma patients. Meyer received his bachelors and masters degrees in cell and molecular biology from Stanford University. From there, he joined the Medical Scientist Training Program at Baylor College of Medicine and earned his medical degree followed by a doctorate in immunology. Meyer completed his residency at the University of Maryland and served as chief resident in medicine from 2004-2005. Afterward, he joined our fellowship program in medical oncology and has been working in the laboratory of Jonathan Powell, M.D., Ph.D., on projects relating to the characterization of molecular regulatory pathways involved in T-cell activation and energy. As a third-year fellow, Meyer served as the chief fellow for our Training Programs in Hematology and Medical Oncology and he received a Young Investigator Award from the American Society of Clinical Oncology in 2010. Dr. Meyer is rated as a Distinguished provider by MediFind in the treatment of Osteosarcoma. His top areas of expertise are Mesenchymoma, Undifferentiated Pleomorphic Sarcoma, Bone Tumor, and Ganglioneuroblastoma.

Brock Lindsey, M.D., is an orthopaedic surgeon specializing in orthopaedic oncology. He treats children and adults with all types of bone and soft tissue sarcomas. Dr. Lindsey has expertise in nanoparticle delivery of immunotherapy, immunodiagnostics as a novel treatment for osteosarcoma, as well as complex reconstruction after amputation, including osseointegration. Dr. Lindsey earned his medical degree from the University of Cincinnati. He then completed an orthopaedic surgery residency at West Virginia University’s (WVU) J.W. Ruby Memorial Hospital, becoming the department’s first to complete a research fellowship during residency. Dr. Lindsey also pursued a fellowship in musculoskeletal oncology at the University of Pittsburgh Medical Center (UPMC) and UPMC Children’s Hospital before returning to WVU Medicine as an attending physician. During his 12 years at WVU Medicine, Dr. Lindsey created programs in musculoskeletal oncology and adult reconstruction as well as a multidisciplinary amputation clinic. He also led a musculoskeletal research laboratory into the national rankings for federal funding for orthopaedic surgery departments. His research focuses on improving treatment strategies for metastatic osteosarcoma and exploring human/machine interfaces for amputees. His work has been published in local, national and international basic science and clinical research journals. Dr. Lindsey has experience mentoring and training students at all levels from undergraduate and graduate students to postdoctoral positions. He won Press Ganey’s “Top Provider” award every year between 2013 and 2018. He also founded ICaPath, a biotech startup derived from his laboratory research that is currently working toward a first in-human clinical trial. Videos Brock Lindsey, M.D.Orthopaedic Oncologist OsseointegrationQ&A with Dr. Brock Lindsey. Dr. Lindsey is rated as a Distinguished provider by MediFind in the treatment of Osteosarcoma. His top areas of expertise are Bone Tumor, Adult Soft Tissue Sarcoma, Osteosarcoma, Hip Replacement, and Knee Replacement.

As instructor of oncology and pediatrics, Llosa’s research focus is the immunotherapy of sarcomas. My research focuses on understanding how the immune system interacts with cancer cells from sarcoma tumors. Sarcoma is a type of cancer that can occur in various locations in the body. Sarcoma is the general term for a broad group of cancers that includes tumors that form in the bones and in the soft (also called connective) tissues. Sarcomas affect people of all ages and some, such as Rhabdomyosarcoma, Neuroblastoma, Ewings sarcoma and Osteosarcoma, are more common in children and young adults. Treatments for sarcoma vary depending on tumor type, location and other factors. I concentrate in the immunotherapy of sarcomas. Immunotherapy (also called biologic therapy or biotherapy) is a type of cancer treatment designed to boost the body's natural defenses to fight the cancer. It uses materials either made by the body or in a laboratory to improve, target, or restore immune system function. Immunotherapy works by stopping or slowing the growth of cancer cells, stopping cancer from spreading to other parts of the body, or helping the immune system increase its effectiveness at eliminating cancer cells. There are several types of immunotherapy, including monoclonal antibodies, non-specific immunotherapies, and cancer vaccines. My specific area of interest is the use of drugs that target immune system checkpoints. The immune system has checkpoints to keep itself from attacking other normal cells in the body. Cancer cells sometimes take advantage of these checkpoints to avoid being attacked by the immune system. CTLA-4 and PD-1/PD-L1 are checkpoint molecules found on immune system cells (T cells) that can be blocked with drugs leading to a general raise in the immune system of the patients which helps it attack cancer cells. These types of drugs are currently being given to patients with melanoma (skin cancer), lung cancer and kidney cancer with great success and they have been found to shrink advanced tumors in many people. The best part of the treatment is that many of these tumor responses have been long-lasting so far, and the side effects are generally less serious than when using chemotherapy. Larger clinical trials are now studying both drugs, both alone and/or in combination with other treatments. My task is and will continue to be using the same type of approach for attacking sarcomas and hopefully obtained the very promising results and long lasting responses observed with the use of immune checkpoint inhibitors in other types of cancer. Dr. Llosa is rated as an Advanced provider by MediFind in the treatment of Osteosarcoma. His top areas of expertise are Adult Soft Tissue Sarcoma, Osteosarcoma, Malignant Peripheral Nerve Sheath Tumor, Ewing Sarcoma, and Bone Marrow Transplant.

Brian Ladle is a Pediatric Hematologist Oncology provider in Baltimore, Maryland. Dr. Ladle is rated as an Advanced provider by MediFind in the treatment of Osteosarcoma. His top areas of expertise are Adult Soft Tissue Sarcoma, Osteosarcoma, Ewing Sarcoma, and Rhabdomyosarcoma.

Albert Aboulafia is an Orthopedics provider in Baltimore, Maryland. Dr. Aboulafia is rated as an Advanced provider by MediFind in the treatment of Osteosarcoma. His top areas of expertise are Bone Tumor, Rhabdomyosarcoma Embryonal, Epithelioid Sarcoma, Fibrosarcoma, and Hip Replacement.

Vincent Ng is an Orthopedics provider in Baltimore, Maryland. Dr. Ng is rated as an Advanced provider by MediFind in the treatment of Osteosarcoma. His top areas of expertise are Adult Soft Tissue Sarcoma, Bone Tumor, Epithelioid Sarcoma, Hip Replacement, and Osteotomy. Dr. Ng is currently accepting new patients.

Dr. Christine Pratilas is a pediatric medical oncologist at the Sidney Kimmel Comprehensive Cancer Center and Associate Professor of Oncology, Pediatrics & Cellular and Molecular Medicine at the Johns Hopkins University School of Medicine. She joined the Hopkins pediatric sarcoma team in 2014. Dr. Pratilas received her undergraduate degree in Biology from Drew University in New Jersey and her medical degree from UMDNJ - Robert Wood Johnson Medical School (now Rutgers University), where she also completed her internship and residency from 1999 to 2002. From 2002 to 2005 she was a fellow in hematology and oncology in the Memorial Sloan Kettering Cancer Center (MSKCC) Department of Pediatrics, and in the Department of Pediatric Hematology and Oncology at New York Weill Cornell Medical Center. She was a postdoctoral research fellow in Dr. Neal Rosen’s Molecular Oncogenesis Laboratory at MSKCC. From 2006 to 2014 she was attending in Pediatric Oncology at MSKCC, specializing in developmental therapeutics & sarcoma. She has been the director of the pediatric sarcoma program at Hopkins since 2018. Dr. Pratilas focuses her research on cancer-associated pathways and signal transduction, which involves figuring out how a cell’s internal molecular pathways work, and how those pathways can be molecularly controlled. This knowledge is the basis for developing promising new molecularly targeted cancer therapies, which is the focus of Dr. Pratilas’s research. Among her important scientific contributions is advancing our understanding of how certain proteins that can be mutated in cancer, known as RAF kinases (specifically BRAF), affect a cancer cell’s behavior. The research in Dr. Pratilas' laboratory is focused on RAS signal transduction pathways, concentrating on pediatric sarcomas such as rhabdomyosarcoma and malignant peripheral nerve sheath tumors, in order to develop novel therapeutics for children with these tumors. Dr. Pratilas is rated as an Advanced provider by MediFind in the treatment of Osteosarcoma. Her top areas of expertise are Malignant Peripheral Nerve Sheath Tumor, Neurofibromatosis Type 1 (NF1), Neurofibromatosis, Adult Soft Tissue Sarcoma, and Osteotomy.

Dr. Cohen is Director of Pediatric Neuro-Oncology and Clinical Director of the Division of Pediatric Oncology at the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins. He received his undergraduate degree at Brown University and earned his MD at the Upstate Medical University, in Syracuse, NY. He did his general Pediatric Residency and Chief Residency at the University of Colorado and completed his Pediatric Hematology/Oncology Fellowship at Johns Hopkins. He has served on the faculty since 1994. His research centers on clinical trials of novel therapeutics for children with brain tumors. Dr. Cohen is co-chair of the High-Grade Glioma committee for the Children's Oncology Group and in that capacity has a particular research interest in the development of therapeutics for the treatment of infiltrating gliomas. He serves on the scientific advisory board for a number of organizations including St. Baldricks and the Childhood Brain Tumor Foundation. He is on the editorial board for PDQ with responsibility for authorship of the pediatric CNS brain tumor summaries. The Pediatric Neuro-Oncology program conducts a broad range of research centered primarily around the development and testing of novel therapeutics for children with brain tumors. The multidisciplinary nature of this work translates into continual collaboration with specialists in pediatric neurosurgery, radiation oncology, neuropathology, neuroradiology, neurology, neuro-ophthalmology, neuropsychology, and other related disciplines. Dr. Cohen is rated as an Experienced provider by MediFind in the treatment of Osteosarcoma. His top areas of expertise are Glioma, Brain Stem Cancer, Medulloblastoma, Embryonal Tumor with Multilayered Rosettes, and Bone Marrow Aspiration.

Sahaja Acharya is the Director of Pediatric Radiation Oncology within the Department of Radiation Oncology and Molecular Radiation Sciences. She specializes in pediatric brain tumors, pediatric sarcomas, and adult sarcomas. She is also the Associate Director for the Radiation Oncology Residency Program. She leads the Pediatric Radiation Oncology program at the Johns Hopkins Hospital and treats patients at both Johns Hopkins Hospital and Sibley Memorial Hospital. She has extensive expertise in proton therapy, SBRT, pediatric malignancies, and adult sarcoma. She is the Principal Investigator on external grants from ASCO Conquer Cancer, the Department of Defense, and the Carson Leslie Foundation. She is also the Principal Investigator of phase II pediatric brain tumor clinical trials. She has been invited to participate in multiple national and international guideline committees and regularly lectures on pediatric malignancies and proton therapy. Dr. Acharya received her Bachelor's in Chemistry and Political Science from Stanford University and her medical degree from Saint Louis University. She completed radiation oncology residency at Washington University in St. Louis. Dr. Acharya is rated as an Experienced provider by MediFind in the treatment of Osteosarcoma. Her top areas of expertise are Brain Tumor, Gliomatosis Cerebri, Glioma, and Posterior Fossa Tumor.

William Houck is an Oncologist in Baltimore, Maryland. Dr. Houck is rated as an Experienced provider by MediFind in the treatment of Osteosarcoma. His top areas of expertise are Paget Disease of the Breast, Lung Cancer, Chronic B-Cell Leukemia (CBCL), and Chronic Lymphocytic Leukemia (CLL).

Dr. Kathryn Lemberg is an Assistant Professor of Oncology and Pediatrics at the Sidney Kimmel Comprehensive Cancer Center. Her research, conducted with Johns Hopkins Drug Discovery, focuses on tumor metabolism and the development of new metabolic inhibitors to treat cancer. She has investigated novel glutamine antagonists in preclinical models of RAS-driven solid tumors. She is also interested in the effects of tumor metabolism on patient growth and development. Dr. Lemberg completed pediatrics residency training at Johns Hopkins and pediatric hematology-oncology fellowship training in the joint Johns Hopkins/National Cancer Institute program. She received her M.D. and Ph.D. degrees from the Medical Scientist Training Program at Columbia University in New York, where her graduate research focused on ferroptosis, a novel oxidative cell death in cancer models. Dr. Lemberg sees pediatric and young adult sarcoma patients as part of the sarcoma team and has additional clinical focus on neurofibromatosis type I related solid tumors. Dr. Lemberg is rated as an Experienced provider by MediFind in the treatment of Osteosarcoma. Her top areas of expertise are Malignant Peripheral Nerve Sheath Tumor, Neurofibromatosis Type 1 (NF1), Neurofibromatosis, and Adult Soft Tissue Sarcoma.

Jason Molitoris is a Radiologist and a Radiation Oncologist in Baltimore, Maryland. Dr. Molitoris is rated as an Experienced provider by MediFind in the treatment of Osteosarcoma. His top areas of expertise are Prostate Cancer, Adult Soft Tissue Sarcoma, Familial Prostate Cancer, Anal Cancer, and Gastrostomy.

Michelle Ghert is an Orthopedics provider in Baltimore, Maryland. Dr. Ghert is rated as an Experienced provider by MediFind in the treatment of Osteosarcoma. Her top areas of expertise are Bone Tumor, Adult Soft Tissue Sarcoma, Chondrosarcoma, Osteotomy, and Bone Graft. Dr. Ghert is currently accepting new patients.

Teresa York is a Pediatric Hematologist Oncology provider in Baltimore, Maryland. Dr. York is rated as an Experienced provider by MediFind in the treatment of Osteosarcoma. Her top areas of expertise are Sickle Cell Disease, Acute Lymphoblastic Leukemia (ALL), Hereditary Spherocytosis, Hemoglobin SC Disease, and Bone Marrow Aspiration.

Djordje Atanackovic is a Hematologist and a Hematologist Oncology provider in Baltimore, Maryland. Dr. Atanackovic is rated as an Experienced provider by MediFind in the treatment of Osteosarcoma. His top areas of expertise are Multiple Myeloma, Smoldering Multiple Myeloma, T-Cell Lymphoma, Bone Marrow Transplant, and Bone Marrow Aspiration.

Regina Macatangay is a Pediatric Hematologist Oncology provider in Baltimore, Maryland. Dr. Macatangay is rated as an Experienced provider by MediFind in the treatment of Osteosarcoma. Her top areas of expertise are Hemoglobin SC Disease, Sickle Cell Disease, Anemia, and Acute Lymphoblastic Leukemia (ALL).

Katherine Tkaczuk is an Oncologist in Baltimore, Maryland. Dr. Tkaczuk is rated as an Experienced provider by MediFind in the treatment of Osteosarcoma. Her top areas of expertise are Breast Cancer, Inflammatory Breast Cancer, Angiosarcoma, and Paget Disease of the Breast. Dr. Tkaczuk is currently accepting new patients.

Megan Askew is a Hematologist and an Oncologist in Baltimore, Maryland. Dr. Askew is rated as an Experienced provider by MediFind in the treatment of Osteosarcoma. Her top areas of expertise are Hemolytic Crisis, Sickle Cell Disease, Alpha Thalassemia X-Linked Intellectual Disability Syndrome, and Alpha Thalassemia. Dr. Askew is currently accepting new patients.

Lei Peng is a Pediatric Hematologist Oncology provider in Baltimore, Maryland. Dr. Peng is rated as an Experienced provider by MediFind in the treatment of Osteosarcoma. Her top areas of expertise are Osteosarcoma, Ewing Sarcoma, Acute Lymphoblastic Leukemia (ALL), and Immune Thrombocytopenic Purpura (ITP).