Mobile Health Center

Wendy Zhang, DNP, CRNP, FNP-BC

Wendy serves as regional director of community health for the Baltimore region of MedStar Health. She works to develop interdisciplinary population health management programs that empower individuals to achieve, optimize, and maintain their wellness. Wendy has a special interest in the development of holistic health programs designed to serve minority, geriatric, homeless, and other vulnerable patient populations. Her combined nursing and business backgrounds allow her to connect with patients in meaningful ways, and understand their needs to guide the development of comprehensive, regional population health programs.

Wendy is a graduate of the University of Maryland, where she earned a doctorate of nursing practice, as well as dual degrees in nursing and health care management—through the University of Maryland’s School of Nursing and Wharton School of Business. When she is not working, Wendy enjoys hiking, playing board games, and trying new foods.

“My goal is to empower people to reach their full potential in all spheres of life. Working with our Mobile Health Center teams allows me to fulfill this vision, and bridge the gap for our community’s most vulnerable populations.”

Stuart Bell, MD

Dr. Stuart Bell serves as the Senior Medical Director for MedStar Health's Mobile Health Center. He devoted his entire career to MedStar Health, joining the organization in the late 1970's and serving in numerous clinical and leadership roles--most notably as the long-term Vice President of Medical Affairs at MedStar Union Memorial Hospital. An advocate for health equity and the availability of community-based health services for the citizens of Baltimore, Dr. Bell provides leadership and mentorship support for MedStar Health's Mobile Health Services team. His experience and guidance is invaluable as the team works to make healthcare services more accessible for all, by visiting communities that have traditionally been underserved.

"MedStar Health's Mobile Health Clinics provide comprehensive medical care and support in some of the communities across our city that need these services the most. Our Mobile Health team is committed to providing a wide range of clinical services, and is truly passionate about making a positive difference in peoples' lives. I am proud to support this team and the work they do each day."

Cassandra Pulley

Cassandra serves as the clinical practice manager for MedStar Health’s Mobile Health Center. She oversees operations, staff, and community engagement initiatives, with focus on optimizing clinical care standards and assuring an exceptional patient experience for those who seek care on both mobile units. In addition to working to improve holistic health outcomes for patients, Cassandra also plays an important role in the development of relationships with community partners.

Cassandra has more than 20 years of experience in healthcare, with primary care, geriatric care, and urgent care services as key areas of specialty. She earned a bachelor’s degree in healthcare administration from Strayer University and is also certified as a medical assistant.

“Being part of the Mobile Health Center team allows me to serve the community where I was born and raised in a meaningful way. I believe healthcare should be accessible and designed to meet people where they are. I am passionate about helping underserved populations and know that consistent, compassionate care can impact not only a person’s health, but also their ability to trust and hope.”

Angela Gimose, FNP-C
Angela is a family nurse practitioner who offers care for patients (age 5+) on the MedStar Health Mobile Health Center. She assesses, diagnoses, manages, and treats a wide range of acute and chronic health conditions, and has experience and a specialized interest in HIV prevention strategies.

Angela earned a master of science in nursing from The Catholic University of America and bachelor of science in nursing from Washington Adventist University. She is board certified as a family nurse practitioner by the American Academy of Nurse Practitioners and is fluent in English as well as Swahili.

“Being part of the Mobile Health Center team allows me to provide care for patients who otherwise might not have access to care. I love building relationships with patients and am very passionate about health equity. It is very fulfilling to help underserved populations manage chronic conditions and improve their overall well-being.”

Shorronta Martin
Shorronta is the driver for the MedStar Health Mobile Health Center serving North Baltimore. Her job is to ensure safe and efficient operations through route planning, vehicle monitoring and maintenance need reporting, and equipment loading and unloading. Additionally, Shorronta supports the clinical care process by handling patient intaking. She greets patients upon arrival and gathers their personal, medical, and insurance information for input into electronic health records. Shorronta also assists patients with scheduling follow-up appointments, as needed.

In addition to her transportation and patient intake responsibilities, Shorronta focuses heavily on customer service, serving as a sounding board for patients who require support and working to help each identify solutions if any concerns or issues arise. When she is not working, she enjoys cooking and spending quality time with her family.

“Being part of the Mobile Health Center team is fulfilling because I have an opportunity to have direct, positive impact on the health and lives of people who are underserved. I have a passion for service, social equity, and making healthcare more accessible. Every task that is part of my job contributes to a greater cause. This dynamic, hands-on work is an ideal fit for me.”

Shakieta Adams
Shakieta serves as a senior medical assistant on the MedStar Health Mobile Health Center that visits communities across South Baltimore. She is responsible for taking patient vitals, documenting personal and family medical history, administering medication, and conducting point of care testing. Additionally, Shakieta assists her colleagues on the Mobile Health Center with conducting patient exams and testing, administering vaccinations, and ordering supplies.

Shakieta earned her phlebotomy certification from the Baltimore Allied Health Training Center. She also earned certification as a clinical medical assistant through Allstate Careers. When she is not working, Shakieta enjoys spending time with her husband and their dog, as well making plans with family and friends.

“What I enjoy most about my job is that the Mobile Health Center is able to provide help for those who have limited resources but need healthcare. I’ve always been very passionate about helping people in their time of need, so I really enjoy being part of this team.”

Shannon Holder, DNP, CRNP, PMHNP-BC, NP-C

Shannon serves as the nurse practitioner on the MedStar Health Mobile Health Center. Her job is to assess, evaluate, diagnose, treat, and educate patients—many of whom have not seen a healthcare provider for many years. She is committed to caring for patients with complex medical and mental healthcare needs, with an ultimate goal to bridge the gap in healthcare disparities across Baltimore.

Shannon is a graduate of Chatham University, where she earned a doctorate of nursing practice. Additionally, she studied at St. Joseph’s College of Maine, where she earned a master’s of science in nursing as a certified family nurse practitioner, and the University of Cincinnati, where she pursued board certification as a psychiatric mental health nurse practitioner. Committed to practicing with she preaches, outside of work Shannon enjoys exercising, preparing healthy meals, reading, watching movies, and traveling.

“I appreciate that I work with a team of co-workers who share my passion. I enjoy educating patients on how they can make changes to improve their health. I consider myself to be a change agent and healthcare advocate, who gets to be part of the solution by fostering and building trusting patient-provider relationships.”

Laura W. Koo, Ph.D., MS, CRNP, FNP-BC
Dr. Koo is a family nurse practitioner who provides comprehensive care for patients age 5+ who are seeking treatment for acute and chronic health conditions on the Mobile Health Center. She has more than two decades of clinical experience in pediatric and family primary care settings. Dr. Koo is fluent in Spanish, making her a tremendous resource for families who sometimes face barriers while seeking medical care.

Dr. Koo is certified as a family nurse practitioner by the American Nurses Credentialing Center and the Maryland State Board of Nursing. In addition to her clinical experience, she has devoted a portion of her career to teaching, serving most recently as an assistant professor at the University of Maryland School of Nursing.

“I aim to empower patients to make informed decisions for their health through clear communication. I strive to listen to each patient’s unique values and preferences to create a collaborative plan of care. I’m thrilled to be part of a team that is committed to making healthcare more accessible for all.”

Carmen Valez

As a community health advocate II, Carmen provides resources and guidance for patients who seek care on the MedStar Health Mobile Health Center, often working to coordinate medical appointments and transportation, and connecting them with government agencies for support. She also assists patients who contact MedStar Health by phone, have been hospitalized, and who are receiving home care visits. Additionally, Carmen helps patients who require durable medical equipment, facilitating ordering and delivery for those who need assistance.

Carmen is a graduate of the Interamerican University of Puerto Rico, where she earned a bachelor’s degree in office administration. She is also certified in the state of Maryland as a community advocate II.

“I love working on the Mobile Health Center because it gives me an opportunity to engage with patients and find resources that will assist them, as they express their concerns and needs. My passion for supporting underserved populations began more than 20 years ago in Puerto Rico, and has grown over time based on my work and experiences.”

Terri Langley
Terri is the MedStar Health Mobile Health Center driver, serving communities across South Baltimore. She is responsible for assuring the unit arrives at scheduled sites on time. Additionally, as the unit’s patient registrar, she takes the lead in helping patients through the registration process upon arrival.

Terri holds a CDL driver’s license, and is personally committed to motivating patients to make good choices that can improve their health. She is married and has three step-children and two cats. For fun, Terri enjoys fishing and traveling, and is always up for exploring and trying new things.

“I have lived in Brooklyn, Curtis Bay, Westport, and Cherry Hill since I was 17 years old. I love being able to care for people who live in the same communities I have always called home. I can relate to our patients and their stories, and I also enjoy telling them stories of my own. I understand them and I want to help them.”