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

Photo of Dr. Grace Weiwei Pien, M.D., M.S.C.E.
  • Assistant Professor of Medicine


Pulmonary and Critical Care Medicine, Sleep Medicine


Johns Hopkins Bayview Medical Center

4940 Eastern Avenue
Baltimore, MD 21224 map
Phone: 410-550-5864


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 a member of the Sleep Fellowship Program Evaluation and Clinical Competency Committee and provides teaching to residents and fellows at Johns Hopkins Hospital. more


  • Assistant Professor of Medicine

Departments / Divisions

Centers & Institutes



  • MD, Columbia University College of Physicians and Surgeons (1994)


  • Boston University School of Medicine / Internal Medicine (1997)


  • Hospital of the University of Pennsylvania / Pulmonary and Critical Care Medicine (2001)
  • Hospital of the University of Pennsylvania / Sleep Medicine (2001)

Board Certifications

  • American Board of Internal Medicine / Critical Care Medicine (2002)
  • American Board of Internal Medicine / Pulmonary Disease (2000)

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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