Tammy Chang, MD, MPH, MS

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

Assistant Professor

Department of Family Medicine
University of Michigan Medical School
1018 Fuller St.
Ann Arbor, Michigan 48104-1213


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Administrative Contact

Katie Grode, (734) 998-7120 x327, kgrode@med.umich.edu


Dr. Tammy Chang is a health services researcher and practicing family physician with a passion for adolescent health, specifically, breaking the cycle of poverty and poor health among adolescent mothers and their children.  Her research is focused on improving access to reproductive health care and promoting healthy pregnancy weight gain among at-risk adolescents.  

Dr. Tammy Chang is an assistant professor in the Department of Family Medicine and a practicing physician at the Ypsilanti Health Center.  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 the University of Michigan. Dr. Chang completed residency training and served as co-chief resident in the Department of Family Medicine at the University of Michigan and is an alumna of the University of Michigan Robert Wood Johnson Foundation Clinical Scholars program. She has received several national awards including the Academy Health Presidential Scholarship for New Health Services Researchers, the North American Primary Care Research Group Distinguished Trainee Award, and the Society of Teachers of Family Medicine Distinguished Paper Award.  

She is a member of the North American Primary Care Research Group and the Society of Teachers of Family Medicine (STFM) where she serves as a member of the Research Committee.

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

She sees patients at Family Medicine at Ypsilanti Health Center →

Areas of Interest

Research Interests
  • Obesity in reproductive-age women
  • New media (social media, text messaging) interventions for weight management
  • Collaborations between large corporations and medical field to improve health



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



Current Research
  • Social Marketing and the Mother-Child Connection: Interdisciplinary Innovation to Address Key Origins of Obesity in the Lifecourse. Global Challenges for Third Century, Co-Investigator (PI: Moniz)
  • National Institutes of Health, Speaking Their Language: Using Social Media and Texting to Create an Adolescent-Centered Approach to Healthy Weight Gain During Pregnancy. Role: PI, 4/1/15-4/1/20, $673,650
  • MCDTR, MyVoice: Real-Time Text Messaging Polling to Give Adolescents a Voice, Role: PI, 1/1/16-12/31/16, $50,000
  • Department of Family Medicine, MyVoice: Real-Time Text Messaging Polling to Give Adolescents a Voice. Role: PI, 9/1/16-8/31/17, $25,000
  • Prevention Research Center Grant, Centers for Disease Control, Deaf Weight Wise 2.0, Rochester Prevention Research Center: National Center for Deaf Health Research. Role: Consultant, 09/01/14-09/01/19, $4.35 million.
  • Michigan Department of Community Health, Health Michigan Plan CMS Evaluation FY16, Role: Co-I, 10/01/15-09/30/16, $1,221,472
  • MCube, MyVoice: Real-Time Text Messaging Polling to Give Adolescents a Voice, Role: PI, 12/01/15-04/29/17, $60,000


In the News


Society of Teachers of Family Medicine logo

May 5, 2017:  Residents and faculty present at 50th annual STFM conference

An impressive group of family medicine residents and faculty will head to San Diego this week, to present research at the Society of Teachers of Family Medicine (STFM) annual conference

image of woman holding newborn baby in hospital

March 17, 2017: For Adolescents, Pre-Pregnancy BMI Directly Linked to Excess Pregnancy Weight Gain 

New research by Tammy Chang, M.D., M.P.H., M.S., identified factors associated with unhealthy weight gain during pregnancy for a vulnerable subset of mothers, those aged 15 to 24.

meaning and purpose in family medicine

February 1, 2017: Finding Meaning and Purpose as a Family Medicine Doctor

What do a student blog post from 2013, Atul Gawande's latest New Yorker essay, and one faculty's latest publication have in common? A common search for the meaning and purpose of family medicine

Advice to pregnant women about smoking

December 2, 2016: New research examines health advice given by friends and family to pregnant women

A new mixed methods study used text message surveys to tap into community conversations about pregnancy health norms and health literacy.

UM Family Medicine is going to NAPCRG

November 16, 2016: Faculty speak at North American Primary Care Research Group conference

Several faculty members from our research division present at the North American Primary Care Research Group (NAPCRG) annual meeting this week. NAPCRG is the premier event for primary care researchers from around the world. 

image of water bottles with text "In the spotlight: Dr. Tammy Chang"

July 15, 2016: Water Intake Overlooked in Obese Individuals

Dr. Chang leads a study that finds a relationship between hydration and body mass index that is featured on NPR, CNN, TIME and more

two people kissing

June 29, 2016: Weight Loss Myths Perpetuate Obesity Problems

Drs. Tammy Chang and Angie Wang discuss how weight loss myths can affect patients, physicians the overall obesity epidemic. 

Published Articles via PubMed

Web Sites



Dr. Tammy Chang - CV