Tammy Chang, MD, MPH, MS

Tammy Chang, M.D., M.P.H., M.S.

Associate Professor
Co-Director, National Clinician Scholars Program at IHPI

Administrative Contact


Dr. Tammy Chang is an associate professor in the Department of Family Medicine, a health services researcher, and a practicing family physician with a passion for adolescent health. She is specifically interested in helping break the cycle of poverty and poor health among adolescent mothers and their children via community-engaged research. Her NIH-sponsored research is focused on improving access to reproductive health care and promoting healthy pregnancy weight gain among at-risk adolescents by utilizing text messaging.

She is also the founding director of MyVoice (www.hearmyvoicenow.org), a national text-message poll of youth age 14-24 years. MyVoice engages youth and communities typically invisible to researchers and uses mixed methods to inform local and national policies in real-time.

Dr. Chang is also the director of the Health Behavior Optimization for Michigan (HBOM) Collaborative Quality Initiative, a statewide clinical quality improvement initiative with funding and support from Blue Cross Blue Shield of Michigan (U-M). Through her leadership, HBOM uses cutting-edge behavior change strategies to transform clinical practices and priorities. HBOM initiatives help individuals living in Michigan make easier health choices so that all residents can achieve their health and wellness goals.

Additionally, Dr. Chang is the director of the National Clinician Scholars Program at U-M where she trains junior faculty clinicians in health services research. She also teaches a Master’s level course in Leadership and Communication in connection with the scholars program. She actively mentors numerous students in high school, undergraduate and graduate schools, as well as medical students and post-doctoral fellows, to inspire and guide the health services researchers of the future.

Besides her teaching and research endeavors, Dr. Chang is a practicing physician at the Corner Health Center in Ypsilanti. 

She received her undergraduate degree from the University of Michigan, with honors in Cellular and Molecular Biology and Zoological Anthropology. She also received her medical degree and master of public health degree in health policy and management from U-M. Dr. Chang completed residency training and served as co-chief resident in the Department of Family Medicine at U-M. She is also an alumna of the university's Robert Wood Johnson Foundation Clinical Scholars Program.

Dr. Chang has served on various National Academy of Science, Engineering, and Medicine (NASEM) committees and working groups and has co-authored two consensus reports on adolescent health and development. She currently serves on NASEM’s Board on Children Youth and Families.  She has also served on the board of directors of both the North American Primary Care Research Group and the Society of Teachers of Family Medicine, where she served as Research Committee chair.

Dr. Chang is fluent in Mandarin Chinese and conversant in Spanish.

Areas of Interest

Research Interests
  • Elevating youth voice to inform health policies in real-time via a national text message poll (www.hearmyvoicenow.org)
  • Social media and text message interventions to improve health behaviors
  • Healthcare policy focusing on access to healthcare and nutrition services for marginalized populations


Medical School
  • M.D., University of Michigan Medical School, Ann Arbor, Mich., 2007
  • University of Michigan Health System, Department of Family Medicine, Mich., 2010
Advanced Degrees
  • M.P.H., Health Policy and Management, University of Michigan School of Public Health, Ann Arbor, Mich., 2005
  • M.S., Master of Health and Healthcare Research, Rackham Graduate School, University of Michigan, Ann Arbor, Mich., 2013
  • Research Fellow, Robert Wood Johnson Foundation Clinical Scholars Program, University of Michigan, Ann Arbor, Mich., 2013
Board Certification
  • Family Medicine



  • Special Delivery: A Community Academic Partnership to Improve the Health of Low-Income Young Mothers and their Children

University of Michigan Poverty Solutions Community-Academic Grants Award
Tammy Chang, PI
01/2020-01/2021. $26,500

  • Healthy Michigan Plan CMS Evaluation FY20

SubK-CMMS-DHHS-US through a consortium with MDHHS- 19- PAF04721
Co-I (Principal Investigator: John Z Ayanian)
10/2019-09/2020. $1,397,298

  • MyVoice: Texting with America's Youth to Improve Health and Wellbeing


Chang, PI

01/2019-02/2021. $50,000

  • Speaking Their Language: Using Social Media and Texting to Create an Adolescent-Centered Approach to Healthy Weight Gain During Pregnancy

NIH-DHHS-US- 15-PAF05394; 17-PAF06560
Tammy Chang, PI
03/2016-02/2021. $673,650

  • National Clinical Scholars Leadership Program IHPI Clinician Scholars Chair Support

Co-I (Principal Investigator: Rodney Hayward)
02/2016-01/2024. $338,128

The goal of our team's work is to provide the right people, the right information, at the right time to informs policies that improve the health of young people in America. We collect open-ended responses via a national text message poll from over 1000 youth across the nation. We use this information in real-time to inform policy-makers and youth-serving individuals so they can tailor programs that actually work. This represents a fundamental change in the way research is currently done-- changing the timeline from months/years to weeks. Family medicine is especially well positioned to be a leader in doing research that matters to youth by respecting youth as experts of their own experience. We want to take their stories and experiences to people who make decisions about their health and wellbeing so policies can better meet the need of youth.