
Overview
Gregory Masters is an Internal Medicine specialist and an Oncologist in Middletown, Delaware. Dr. Masters is rated as an Experienced provider by MediFind in the treatment of Triple-Negative Breast Cancer. His top areas of expertise are Lung Cancer, Small Cell Lung Cancer (SCLC), Non-Small Cell Lung Cancer (NSCLC), Endoscopy, and Tissue Biopsy.
His clinical research consists of co-authoring 65 peer reviewed articles and participating in 165 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
- HMO
- POS
- PPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- OTHER COMMERCIAL
- OTHER MEDICARE
- OTHER MEDICARE PART D
- PPO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE SNP
- EPO
- HMO
- PPO
- EPO
- POS
- HMO
- INDEMNITY
- POS
- PPO
- EPO
- POS
- PPO
- OTHER MEDICAID
- STATE MEDICAID
- EPO
- HMO
- EPO
- HMO
- POS
- PPO
- MEDICARE DISCOUNT CARD
- MEDICARE PDP
- OTHER MEDICARE
- EPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE
- OTHER MEDICARE PART D
Locations
651 North Broad Street, Suite 406, Middletown, DE 19709
4701 Ogletown Stanton Road, Helen F Graham Cancer Center, Suite 3400, Newark, DE 19713
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.
161 Clinical Trials
Johns Hopkins Health Care & Surgery Center - Green Spring Station, Lutherville
Dr. Antonio Wolff is internationally recognized for his work on breast cancer biomarkers, including HER2. As a practicing oncologist and clinical translational researcher, his research has been pivotal to improve the quality of breast cancer biomarker testing in breast cancer, including HER2 and estrogen receptor testing. Among his leadership accomplishments is ensuring that sophisticated laboratory findings are translated into improved clinical care in breast cancer. He is a Fellow of the American Society of Clinical Oncology (ASCO), a Komen Scholar and a Breast Cancer Research Foundation investigator. He has served as associate editor for Journal of Clinical Oncology, and serves on the National Comprehensive Cancer Network (NCCN) Guideline Steering Committee. He is a leader of the Translational Breast Cancer Research Consortium (TBCRC), and one of the principal investigators of the Evolutionary Clinical Trial for Novel Biomarker-Driven Therapies (EVOLVE) in Metastatic Breast Cancer, which was one of the three disease groups recently awarded by ARPA-H to conduct innovative trials using Advanced Analysis for Precision Cancer Therapy (ADAPT). After many years of service as Breast Committee Chair in the ECOG-ACRIN Clinical Trial Network of the National Cancer Institute (NCI), he was elected in 2024 as Co-Chair of the NCI Breast Cancer Steering Committee and appointed to the international steering committee of the Oxford Overview Collaborative, which are positions aimed at advancing clinical trials in breast cancer. At Johns Hopkins, he is an elected member of the Miller Coulson Academy of Clinical Excellence and was honored during the 125th Anniversary Living the Hopkins Mission celebrations of the JHU School of Medicine. Dr. Wolff is rated as a Distinguished provider by MediFind in the treatment of Triple-Negative Breast Cancer. His top areas of expertise are Breast Cancer, HER-2 Positive Breast Cancer, Triple-Negative Breast Cancer, and Inflammatory Breast Cancer.
Skip Viragh Outpatient Cancer Center
Dr. Santa-Maria completed his oncology training at Johns Hopkins, and has been focused on caring for patients with breast cancer since then. He works as both a primary oncologist and consultant for patients with all types and stages of breast cancer. His research interest is in developing new types of treatment for patients with breast cancer using immunotherapy. Dr. Santa is rated as a Distinguished provider by MediFind in the treatment of Triple-Negative Breast Cancer. His top areas of expertise are Breast Cancer, Triple-Negative Breast Cancer, Inflammatory Breast Cancer, and Paget Disease of the Breast.
Leisha Emens is an Oncologist in Baltimore, Maryland. Dr. Emens is rated as a Distinguished provider by MediFind in the treatment of Triple-Negative Breast Cancer. Her top areas of expertise are Breast Cancer, Triple-Negative Breast Cancer, Inflammatory Breast Cancer, and Ovarian 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
- Elite
- Lung CancerDr. Masters isElite. Learn about Lung Cancer.
- Distinguished
- Colorectal CancerDr. Masters isDistinguished. Learn about Colorectal Cancer.
- Familial Colorectal CancerDr. Masters isDistinguished. Learn about Familial Colorectal Cancer.
- Familial Prostate CancerDr. Masters isDistinguished. Learn about Familial Prostate Cancer.
- Lynch SyndromeDr. Masters isDistinguished. Learn about Lynch Syndrome.
- Non-Small Cell Lung Cancer (NSCLC)Dr. Masters isDistinguished. Learn about Non-Small Cell Lung Cancer (NSCLC).
- Paget Disease of the BreastDr. Masters isDistinguished. Learn about Paget Disease of the Breast.
- Advanced
- Adult Soft Tissue SarcomaDr. Masters isAdvanced. Learn about Adult Soft Tissue Sarcoma.
- ALK-Positive Non-Small Cell Lung Cancer
- Anal CancerDr. Masters isAdvanced. Learn about Anal Cancer.
- AstrocytomaDr. Masters isAdvanced. Learn about Astrocytoma.
- Atypical Teratoid Rhabdoid Tumor (ATRT)
- Bladder CancerDr. Masters isAdvanced. Learn about Bladder Cancer.
- Experienced
- Acinic Cell Carcinoma of Salivary GlandsDr. Masters isExperienced. Learn about Acinic Cell Carcinoma of Salivary Glands.
- Acute Lymphoblastic Leukemia (ALL)Dr. Masters isExperienced. Learn about Acute Lymphoblastic Leukemia (ALL).
- Acute Myeloblastic Leukemia with Maturation
- Acute Myeloblastic Leukemia without Maturation
- Acute Myeloid Leukemia (AML)Dr. Masters isExperienced. Learn about Acute Myeloid Leukemia (AML).
- Acute Promyelocytic LeukemiaDr. Masters isExperienced. Learn about Acute Promyelocytic Leukemia.



