Overview
Dr. Mark Markowski is a medical oncologist at the Kimmel Cancer Center at Sibley Memorial Hospital, as well as an Associate Professor in the Department of Oncology at Johns Hopkins University School of Medicine. Dr. Markowski participates in multidisciplinary clinics at Sibley and The Johns Hopkins Hospital, and sees patients in the genitourinary clinics of both hospitals. Dr. Markowski treats numerous types of cancers, with a specialty in prostate and kidney cancers. Dr. Markowski earned his medical degree and Ph.D. in tumor biology at Georgetown University School of Medicine. He completed a residency in internal medicine at Columbia University, followed by a medical oncology fellowship at Johns Hopkins Hospital. Dr. Markowski previously served as a research associate at the Lombardi Comprehensive Cancer Center at Georgetown University. His research interests focus on early phase drug development for prostate cancer, as well a non-castrating therapies for patients with metastatic disease. Dr. Markowski is currently conducting research with funding from a Department of Defense Prostate Cancer Research Program Award and a Challenge Award from the Prostate Cancer Foundation, which focuses on new treatment strategies for prostate cancer patients.
Dr. Markowski is rated as an Experienced provider by MediFind in the treatment of Metastatic Brain Tumor. His top areas of expertise are Prostate Cancer, Renal Cell Carcinoma (RCC), Wilms Tumor, Hormone Replacement Therapy (HRT), and Prostatectomy.
His clinical research consists of co-authoring 74 peer reviewed articles and participating in 8 clinical trials. MediFind looks at clinical research from the past 15 years.
Insurance
Accepted insurance can change. Please verify directly with the provider.
Accepted insurance plans:
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- POS
- PPO
- HMO
- POS
- PPO
- EPO
- HMO
- PPO
- INSURANCE PLAN
- MEDICARE PDP
- PPO
- HMO
- POS
- PPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- OTHER COMMERCIAL
- OTHER MEDICARE
- OTHER MEDICARE PART D
- PPO
- HMO
- INDEMNITY
- POS
- PPO
- HMO
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE-MEDICAID PLAN
- OTHER MANAGED MEDICAID
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE PART D
- OTHER COMMERCIAL
- EPO
- HMO
- POS
- PPO
- 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, Building B, Building B, 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.
8 Clinical Trials
Sibley Memorial Hospital
Dr. Solmaz Sahebjam is a medical oncologist and an associate professor of oncology at Johns Hopkins University School of Medicine. Her expertise is in primary and metastatic brain tumors, breast cancer, and the development of new drugs for cancer. She earned her medical degree from Iran University of Medical Sciences, followed by a post-doctoral research fellowship at Shriners Hospital, McGill University in Montreal. Dr. Sahebjam completed residency training in internal medicine at Saint Vincent Hospital, followed by a fellowship in internal medicine at the University of Ottawa in Canada. She continued her training with a residency in medical oncology at McGill University in Canada followed by a fellowship in early-phase drug development, breast oncology, and neurooncology at Princess Margaret Hospital, University of Toronto in Canada. Dr. Sahebjam’s research is focused on the development of novel therapeutic regimens for the treatment of cancer including breast and central nervous system malignancies. Over the years, she has led and contributed to numerous clinical trials some of which have resulted in new treatment options for patients with cancer. Dr. Sahebjam is rated as an Elite provider by MediFind in the treatment of Metastatic Brain Tumor. Her top areas of expertise are Glioma, Brain Tumor, Glioblastoma, Astrocytoma, and Awake Craniotomy.
Skip Viragh Outpatient Cancer Center
Dr. Matthias Holdhoff is a medical oncologist and co-director of the Brain Cancer Disease Group at the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins. He is a professor of oncology, neurology and neurological surgery at Johns Hopkins University School of Medicine. Dr. Holdhoff’s expertise is in primary brain cancers and central nervous system lymphomas. He earned his medical degree from Freie Universität Berlin, received his doctorate degree at Charité University Medicine Berlin. Dr. Holdhoff completed residency training in internal medicine at Johns Hopkins Bayview Medical Center, followed by a fellowship in medical oncology at Johns Hopkins Hospital with research training at the Ludwig Center for Cancer Genetics and Therapeutics (Kinzler-Vogelstein lab). As a clinical investigator in neuro-oncology, his research is focused on novel trials and translational biomarker studies in malignant gliomas and primary central nervous system lymphomas. He has led and contributed to numerous clinical trials, publications and presentations. Dr. Holdhoff serves as the director of the solid tumor inpatient service at the Sidney Kimmel Comprehensive Cancer Center. He is passionately involved in mentoring and teaching of fellows, residents and students. He is the director of the UCNS-certified neuro-oncology fellowship program at Johns Hopkins, and he is a teaching attending physician for the Osler internal medicine residency program. Dr. Holdhoff is rated as an Elite provider by MediFind in the treatment of Metastatic Brain Tumor. His top areas of expertise are Glioma, Glioblastoma, Astrocytoma, and Brain Tumor.
Inova Health Care Services
Adam Cohen is an Oncologist in Fairfax, Virginia. Dr. Cohen is rated as a Distinguished provider by MediFind in the treatment of Metastatic Brain Tumor. His top areas of expertise are Glioblastoma, Embryonal Tumor with Multilayered Rosettes, Neuroepithelioma, Bone Marrow Aspiration, and Liver Embolization. Dr. Cohen is currently accepting new patients.
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
- Elite
- Hormone Replacement Therapy (HRT)Dr. Markowski isElite. Learn about Hormone Replacement Therapy (HRT).
- Prostate CancerDr. Markowski isElite. Learn about Prostate Cancer.
- Distinguished
- Chromophobe Renal Cell CarcinomaDr. Markowski isDistinguished. Learn about Chromophobe Renal Cell Carcinoma.
- Clear Cell SarcomaDr. Markowski isDistinguished. Learn about Clear Cell Sarcoma.
- Familial Prostate CancerDr. Markowski isDistinguished. Learn about Familial Prostate Cancer.
- Familial Wilms Tumor 2Dr. Markowski isDistinguished. Learn about Familial Wilms Tumor 2.
- Renal Cell Carcinoma (RCC)Dr. Markowski isDistinguished. Learn about Renal Cell Carcinoma (RCC).
- Wilms TumorDr. Markowski isDistinguished. Learn about Wilms Tumor.
- Advanced
- Adult Soft Tissue SarcomaDr. Markowski isAdvanced. Learn about Adult Soft Tissue Sarcoma.
- NUT CarcinomaDr. Markowski isAdvanced. Learn about NUT Carcinoma.
- ProstatectomyDr. Markowski isAdvanced. Learn about Prostatectomy.
- Experienced
- Alveolar Soft Part SarcomaDr. Markowski isExperienced. Learn about Alveolar Soft Part Sarcoma.
- Bladder CancerDr. Markowski isExperienced. Learn about Bladder Cancer.
- Bone TumorDr. Markowski isExperienced. Learn about Bone Tumor.
- Brain TumorDr. Markowski isExperienced. Learn about Brain Tumor.
- Metastatic Brain TumorDr. Markowski isExperienced. Learn about Metastatic Brain Tumor.
- Muscle Invasive Bladder CancerDr. Markowski isExperienced. Learn about Muscle Invasive Bladder Cancer.

