Leslie Lawson, CRNP

Leslie Lawson, CRNP, has worked as a family nurse practitioner since 2013.  Prior to joining Maryland Oncology Hematology, Leslie practiced Internal Medicine for almost a decade- first in Savannah, Georgia, and most recently, in Bowie, Maryland, focusing on a patient-centered, evidence-based approach. Over the years, Leslie became increasingly interested in caring for patients with cancer and blood disorders and chose to join Maryland Oncology Hematology to follow this passion in 2022.

Leslie earned a Master of Science in Nursing (MSN) from Gonzaga University and a Bachelor of Fine Arts (BFA) from Pacific Lutheran University, both in Washington State.  Leslie also served in the United States Army as an officer, attaining the rank of Captain.  Leslie continues to work on her education, pursuing a specialization in hematology and medical oncology.

Leslie is originally from Boise, Idaho.  She relocated with her family to the Annapolis area in 2016 and lives in Severna Park. Her husband, Chris, continues to serve on active duty as a senior United States Army officer. In her personal time, Leslie enjoys spending time with her family- enjoying nature and multiple outdoor sports, including running and competitive horseback riding with her daughter.


Lisa Martin BSN

Lisa joined Maryland Oncology Hematology in December 2021 as the Breast Surgical Nurse Navigator and brought 23 years of Oncology experience. Lisa has experience in Radiation Oncology with Sibley Memorial Hospital, Inova Fairfax, and Virginia Cancer Specialists. Lisa was a member of the McKesson Clinical Advisory committee for radiation. Lisa then transitioned to the medical oncology specialty and worked as a breast cancer nurse navigator with Virginia Cancer Specialists. She is currently a member of the clinical advisory council for nurse navigators.
Lisa graduated from Elmira College with her BSN and is originally from Toledo, Ohio.

Debbie Dey, LCSW-C, OSW-C

Debbie is an LCSW-C with over 20 years of experience, having practiced in a variety of settings including research, schools, and health care. She believes mental health, including emotional, psychological, and social well-being is essential to one’s overall wellness. Her approach to oncology patients and caregivers is to be a compassionate presence while holding a safe space for them to explore the emotional impact of the diagnosis. This approach provides empathy and utilizes supportive guidance to address common feelings of anxiety, stress, and depression.

Debbie understands that practical barriers and financial challenges often cause distress for patients. She works with patients to identify psychosocial concerns and utilizes community and national resources to best meet their needs. Debbie partners with various organizations in the wider cancer community and can steer patients to meaningful support options as applicable.

Debbie is continually humbled and inspired by the organic relationships created with patients and grateful for the support of the cancer community. Debbie’s services are available to all patients throughout the continuum of care. Patients are referred by physicians and the care team or can reach out directly to discuss needs or schedule an appointment. Support and counseling services are available via telephone, telehealth, chairside or in-person; individual and family counseling is offered onsite.

Jacqueline Shanahan BSN, RN, OCN

Jackie believes the primary function of an Oncology Nurse Navigator is to remove barriers to care, expedite care in the most efficient way possible and try to alleviate some of the stress that impacts a cancer patient and their families. Jackie works with multidisciplinary teams of physicians, including radiation oncologists, surgeons, radiologists, and specialists in all modalities coordinating care for patients and being an advocate for the patient and their families. The role of the Oncology Nurse Navigator never ends, it lasts through the continuum of care from diagnosis through survivorship and end of life. Jackie has over 19 years of Oncology Nursing experience that includes inpatient, outpatient, and radiation oncology positions. Jackie works closely with our Oncology Social Worker to identify barriers to care and patient needs. As the Oncology Nurse Navigator, Jackie strives to improve patient understanding of their individualized care plans, improve communication within the care team, and ultimately have the patient experience better outcomes.

Amy Tissiere, LCSW-C, OSW-C

As an oncology social worker, Amy specializes in helping people negotiate the social and emotional impact of cancer and its treatment by providing various support services designed to complement medical care, foster coping skills and mobilize resources in order to support optimal quality of life. Amy has over 15 years of clinical experience in both inpatient and outpatient oncology care settings where she has provided a range of supportive care services, including counseling, to patients and families coping with cancer.

Member of the Association of Oncology Social Work

Atekelt Tadese, PA-C

Mrs. Atekelt Tadese is a Physician Assistant at Maryland Oncology Hematology. Mrs. Tadese went to University of Maryland College Park where she earned Bachelor of Science degree in Physiology and Neurobiology. She received a Master of Science in Physician Assistant Studies at Philadelphia College of Osteopathic Medicine, Philadelphia, PA. Mrs. Tadese Joined Maryland Oncology Hematology in 2016. She attended City of Hope Intensive course in Cancer Risk Assessment and received certificate in February, 2018.

Adam Schmuckler, P.A.-C., MMSc

A native of Syracuse, New York, Adam completed his undergraduate work at Syracuse University in 1988. Pursuing a passion for patient care, he completed his Masters of Medical Science degree at Emory University’s Physician Assistant Program in 1996, graduating with honors. Adam began his career in Hematology-Oncology shortly after graduating, and joined the Maryland Oncology Hematology team in 2003. In addition to providing exceptional care for the patients of our clinic, he has served as a lecturer and mentor for Physician Assistant students.

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United in Healing with The US Oncology Network - Maryland Oncology Hematology