Sara Elizabeth Barnes Mixter, M.D., M.P.H.

Headshot of Sara Elizabeth Barnes Mixter
  • Assistant Professor of Medicine


Internal Medicine, Pediatrics

Research Interests

Primary care education; Quality of healthcare; Care for patients with developmental disabilities more

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Insurance Information

Main Phone

Outside of Maryland & Washington D.C.

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International Patients

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Johns Hopkins Outpatient Center (now called Levi Watkins, Jr., M.D., Outpatient Center)

Appointment Phone: 410-955-0670
601 N. Caroline St.
Baltimore, MD 21287 map
Phone: 410-955-1018 | Fax: 410-367-2185

Johns Hopkins Medicine - Green Spring Station

Appointment Phone: 410-955-0670
10753 Falls Road
Pavilion II Suite 325
Lutherville, MD 21093 map
Phone: 410-583-2774 | Fax: 410-583-2883


Dr. Sara Mixter is Assistant Professor of Medicine and Pediatrics at the Johns Hopkins University School of Medicine. Her areas of clinical expertise are internal medicine, pediatrics, and primary care for adults with developmental disabilities and other complex childhood-onset conditions. She is the director of the Hopkins PACT (Pediatric-informed Adult Care and Transition) Clinic. 

Dr. Mixter received her A.B. from Harvard College. She earned her M.D. from Harvard Medical School and M.P.H. from the Harvard School of Public Health. She completed her residency at Johns Hopkins as part of the inaugural group of trainees in the Urban Health Combined Internal Medicine-Pediatrics Residency Program.

Her research interests include transitions of care for adolescents with special healthcare needs and education for residents and medical students, especially in primary care and complex care.

Dr. Mixter has served as the Assistant Chief of Service for the Longcope firm of the Osler Medical Housestaff Training Program (2015-16), as well as Assistant Program Director for Ambulatory Education (2014-15). more


  • Assistant Professor of Medicine

Departments / Divisions



  • MD; Harvard Medical School (2010)


  • Medicine and Pediatrics; Johns Hopkins University School of Medicine (2014)

Board Certifications

  • American Board of Internal Medicine (Internal Medicine) (2014)
  • American Board of Pediatrics (Pediatrics) (2014)

Activities & Honors


  • Student Teaching Award, Johns Hopkins Department of Medicine, 2013

Professional Activities

  • Co-director, High-Value Care Committee, Johns Hopkins Department of Medicine
  • Assistant Chief of Service, Housestaff Training Program, Johns Hopkins Department of Medicine
  • Member, Patient-Centered Medical Home Accountable Care Organization (PCMH-ACO) Roundtable

Patient Ratings & Comments

The Patient Rating score is an average of all responses to physician related questions on the national CG-CAHPS Medical Practice patient experience survey through Press Ganey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Comments are also gathered from our CG-CAHPS Medical Practice Survey through Press Ganey and displayed in their entirety. Patients are de-identified for confidentiality and patient privacy.

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