Meet the Team


































Katherine E. Grimes, MD, MPH; Director

Dr. Grimes is a child psychiatrist and children's health services researcher, and is the Director of the Children's Health Initiative, at Cambridge Health Alliance. Previously the PI for the long-running study of an innovative "Mental Health Services Program for Youth" system-of-care, launched by the RWJ Foundation, Dr. Grimes has an MPH from the Harvard T.H. Chan School of Public Health and is a former Faculty Research Fellow at the Kennedy School of Government. In 2016, the American Academy of Child and Adolescent Psychiatry honored her with “Distinguished Fellow” status for her contributions on behalf of children with mental health needs. Her experience with integrated care in the public sector has led to her health policy focus on improving mental health treatment access and quality for children and adolescents, as well as on expanding work-force capacity. Dr. Grimes’ work as PI on studies funded by the BCBS Foundation, featured shared training by pediatric residents and child psychiatry fellows, fueling a new undergraduate medical education initiative in integrated care for children, via the HMS-Academy. Her training efforts include a public health approach, intended to promote cost-effectiveness by recognizing those with childhood trauma, or other social determinants of health, that may place them at greater risk for mental health outcomes disparities. Dr. Grimes is currently the PI for a multi-year SAMHSA grant to the Cambridge Public Health Commission, working alongside the state's child serving agencies to enhance systems of care for vulnerable children and families. In addition to her HMS faculty role in child and adolescent psychiatry training, she serves as a preceptor for students from both the Harvard TH Chan and the Tufts Medical Schools of Public Health.














Benjamin Lê Cook, Ph.D., MPH

Dr. Cook is the Director of the Health Equity Research Lab and the Center for Multicultural Mental Health Research, a Senior Scientist at Cambridge Health Alliance, and an assistant professor at Harvard Medical School. His research interests are in improving methods for measuring disparities, and applying these methods to understanding the mechanisms underlying mental health and substance abuse treatment disparities, the association between acculturation and mental health, and geographic differences in mental health service use disparities. He received a Ph.D. in Health Policy at Harvard University concentrating in Evaluative Science and Statistics, an MPH from UNC-Chapel Hill in the Department of Health Behavior and Health Education, and a BA in psychology from Swarthmore College.











Greg Hagan, M.D., FAAP

Dr. Hagan is the Chief of Pediatrics at Cambridge Health Alliance, as well as a CHA Regional Medical Director, and recent past-President of the Massachusetts Chapter of the American Academy of Pediatrics (MCAAP). As a key player in CHI's recent five year grant to study integrated care for children, within a community-based, participatory research model, Dr. Hagan was instrumental in the design and implementation of the role of the primary care clinician in the integrated model. He also contributes his expertise as a mentor and preceptor for Harvard Medical School students and Massachusetts General Hospital pediatric residents to our clinical training initiatives.

















Cecil Webster, MD

Dr. Cecil Webster is an instructor in psychiatry part time at Cambridge Health Alliance (CHA) and Harvard Medical School, and the Clinical Program Director of Diversity Health Outreach Programs at MIT. He also maintains a private practice in Back Bay, Boston. Dr. Webster has published and presented in areas including pedi-child psych outpatient consultation-liaison, integral child mental health care, LGBT parents in primary care settings, school mental health consultation, and culturally mediated influences in psychotherapy such as racial/ethnic identity, and gender and sexuality. He completed his general residency at Baylor College of Medicine where he served as chief resident, and his child and adolescent psychiatry fellowship at Cambridge Health Alliance/Harvard Medical School. He is a former Diversity Leadership Fellow of the American Psychiatric Association, as well as a former American Psychoanalytic Association Fellow.











Sara Coffey, DO

Dr. Sara Coffey is assistant professor of Psychiatry and Oxley Chair in Child and Adolescent Psychiatric Research at the OU School of Community Medicine. Dr. Coffey is board-certified in general psychiatry and child and adolescent psychiatry. She earned her medical degree at Oklahoma State University's College of Osteopathic Medicine. Dr. Coffey's professional interests include collaborative care with pediatricians and consultative work within the public schools. Dr. Coffey is also interested in advocacy efforts for persons and families affected by mental illness and has advocated on both a state and national level for patients and their families.





















Courtney McMickens, MD, MPH

Courtney McMickens, M.D., M.P.H. is a Postdoctoral Fellow in the Robert Wood Johnson Clinical Scholars Program at Yale School of Medicine. Her research interests include effects of trauma on child health outcomes, community-based mental health services for multi-stressed families, and system-level practices for families that have experienced trauma. She is currently evaluating a hybrid learning model for community-based primary care clinics interested in integrating mental health services and exploring the experiences of mothers receiving community-based mental health services in non-traditional urban settings. Additionally, Dr. McMickens is exploring the role of trauma-informed practices for community-based child care providers.

Dr. McMickens earned an undergraduate degree in biology from Tuskegee University. She received a medical degree from Harvard Medical School and a masters of public health degree from the Harvard Chan School of Public Health. She completed General Psychiatry Residency at the University of Pennsylvania and a Child Psychiatry Fellowship at Cambridge Health Alliance.
































Amy Mayhew, MD, MPH

Dr. Amy Mayhew graduated from Wesleyan University in Connecticut, where she double-majored in English and African-American Studies. Motivated to work towards social change but unsure in which capacity, she then worked in several nonprofit organizations geared towards education, youth, and the environment, including time at a residential treatment facility associated with UCSF. She entered a Masters Internationalist MPH program with Tulane School of Public Health and Tropical Medicine and the Peace Corps, and then served as a Peace Corps volunteer in Nepal, where she decided to go to medical school. After receiving her MPH, she returned to the United States and ultimately graduated from the University of Rochester School of Medicine and Dentistry. She went on to complete her adult psychiatry residency at Menninger Department of Psychiatry at Baylor School of Medicine, where she received a Laughlin Award, and then finished child psychiatry fellowship at Cambridge Health Alliance. As a NHSC scholar, she then worked four years as a staff psychiatrist at Codman Square Health Center in Dorchester, MA. While there, she participated in the Kraft Practitioner program and created a referral and triage system for patients presenting for psychiatric and mental health treatment at the health center. She supervised the implementation of the child and adolescent services of the PTS in 2015, and came on as Medical Director in October 2016. Her academic interests include health care parity, unauthorized immigrants, trauma and resiliency, population management, family therapy, and social advocacy.




































Karen Martinez

Karen Martinez is the Family Support Specialist, Supervisor. She is a mother of four children and has devoted her life to making sure that her children have all necessary formal and informal supports, so that they may be successful in life.

Karen worked as the bicultural, bilingual Family Partner at the "Mental Health Services Program for Youth" (MHSPY) program with Dr. Grimes, the PI for a longitudinal RWJ Foundation study of using systems of care to improve treatment of children and adolescents with serious emotional disturbance (SED).

During this time Karen participated in the Care Planning Team process working with parents/guardian, teacher, health care professionals, and individuals identified as natural support for the child; ensuring high fidelity to the Wraparound model and its practice. Karen assisted parents/caregivers in meeting the needs of youth in their care through educating, supporting, coaching and modeling. Her work with families is centered in a cultural competence perspective and understanding, and approval of cultural distinctions, taking into account family’s beliefs, values, activities and customs.

Karen obtained a degree in Early Childhood Education, Phi Beta Kappa and worked as a Lead Teacher as an educator of young children. She has brought her heartfelt passion for supporting and empowering families with children with a mental health diagnosis to her work for over 15 years. Karen offers parents guidance through her own lived experiences, so they may be successful in their own worlds. By identifying the family’s strengths and guiding them to the resources available to them to help address their needs, she guides them toward self-sufficiency.













Timothy Creedon Research Associate at the Health Equity Research Lab, PhD Candidate at Brandeis Universit

Timothy Creedon is a Research Associate at the Health Equity Research Lab and a PhD candidate in Social Policy with a concentration in Behavioral Health Policy at Brandeis University. He is currently the recipient of an F31 predoctoral training grant from NIDA and was previously supported by a T32 grant from NIAAA. His research interests include access to behavioral health services, racial/ethnic health disparities, social determinants of health, and community-based interventions (e.g., supportive housing) for individuals with serious mental illness. He holds a MA in Social Policy from Brandeis University and a BA in History from Tufts University.



Brian Mullin

Brian Mullin is a data analyst and programmer with expertise in SAS and SQL. He has over 20 years of experience analyzing public health, health insurance, and health care data. He is pursuing ways in which big data can provide population based solutions to health care.






Tim Button

Tim Button is an MPH student focusing on health policy at the Harvard T.H. Chan School of Public Health. Previously he spent 15 years at Truven Health Analytics managing and analyzing government healthcare claims databases. He is interested in ways that innovation and reform can reshape the healthcare delivery system, particularly around chronic illness and mental health.