Grace Pien, M.D., M.S.C.E.

Grace W. Pien, M.D., M.S.C.E.

  • Program Director, Sleep Medicine Fellowship Program
  • Assistant Professor of Medicine


Pulmonary and Critical Care Medicine, Sleep Medicine more


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

601 N. Caroline St.
Baltimore, MD 21287 map
Phone: 443-287-3313 | Fax: 443-287-3312

Johns Hopkins Bayview Medical Center

4940 Eastern Avenue
Baltimore, MD 21224 map


Dr. Pien is a pulmonary, critical care, and sleep medicine physician. She is an expert in the diagnosis and management of patients with sleep apnea and other sleep disorders. She also provides inpatient care to patients with pulmonary disease.  Dr. Pien is the program director of the Sleep Medicine Fellowship Program and provides teaching to residents and fellows at Johns Hopkins Hospital. more


  • Program Director, Sleep Medicine Fellowship Program
  • Assistant Professor of Medicine

Departments / Divisions

Centers & Institutes

  • Sleep Disorders Center at The Johns Hopkins Hospital



  • M.D.; Columbia University College of Physicians and Surgeons (New York) (1994)
  • A.B.; Harvard University (Massachusetts) (1990)
  • M.S.C.E.; Raymond and Ruth Perelman School of Medicine at University of Pennsylvania (Pennsylvania) (2004)

Research & Publications

Research Summary

A major focus of Dr. Pien’s research is on sleep and sleep disorders in women, including projects examining sleep and sleep-disordered breathing in pregnant women and factors contributing to sleep apnea during the menopausal transition. She is currently examining the effect of maternal sleep disruption during pregnancy on the developing fetus. Dr. Pien is also interested in clinical phenotypes of obstructive sleep apnea and how identification of different presentations of OSA affects response to treatment, underscoring the need for a personalized approach to OSA management.

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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