Skip Navigation

COVID-19: We are vaccinating patients ages 12+. Learn more:

Vaccines, Boosters & Additional Doses | Testing | Patient Care | Visitor Guidelines | Coronavirus | Self-Checker | Email Alerts


Philips Respironics issued a recall for some CPAP and BiLevel PAP devices and mechanical ventilators. Learn more.

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

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

Headshot of Grace Pien
  • Assistant Professor of Medicine


Pulmonary and Critical Care Medicine, Sleep Medicine more


Johns Hopkins Outpatient Center

601 N. Caroline St.
Baltimore, MD 21287 map

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 the program director of the Sleep Medicine Fellowship Program and provides teaching to residents and fellows at Johns Hopkins Hospital. more


  • Assistant Professor of Medicine

Departments / Divisions

Centers & Institutes

  • Sleep Disorders Center at The Johns Hopkins Hospital



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


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


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

Contact for Research Inquiries

Johns Hopkins Sleep Disorders Center
5501 Hopkins Bayview Circle
Asthma and Allergy Building 4B 63
Baltimore, MD 21224 map
Phone: 443-287-3313
Fax: 440-367-2710

Is this you? Edit Profile
back to top button