Summary

Dr. Lewis received her undergraduate degree from Boston College and medical degree from Georgetown University School of Medicine. She completed her residency in Internal Medicine at Georgetown University Hospital where she remained to complete her fellowship training in Pulmonary Disease, Critical Care and Sleep Medicine. She is Board Certified in Pulmonary Disease, Sleep Medicine and Critical Care Medicine, a fellow of the American College of Chest Physicians, a diplomat of the American Academy of Sleep Medicine, and a member of the Society of Critical Care Medicine. In her previous position at the Washington Hospital Center she won the Nurses' Choice Physician Collaboration Award. Dr. Lewis has a special interest in Sleep Medicine and also has extensive experience in Critical Care Medicine. Dr. Lewis is Medical Director of the Intensive Care Unit at Virginia Hospital Center. Dr. Lewis enjoys the role of physician-educator as it applies to teaching physicians-in-training as well as her patients.
Read More Read less

Quick Facts

  • 4.2
  • 42 years of experience
  • speaks English, Spanish
  • Georgetown University Medical Center
  • 1 written review
  • 3 specialties
  • 5 areas of expertise
  • 7 hospital affiliations
  • 2 office locations
  • Female

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. Mary-Margaret Lewis has 2 locations

Virginia Hospital Center

1701 N George Mason DrArlington, VA 22205
Mon12:00 am - 12:00 pm
Tue12:00 am - 12:00 pm
Wed12:00 am - 12:00 pm
Thu12:00 am - 12:00 pm
Fri12:00 am - 12:00 pm
Sat12:00 am - 12:00 pm
Sun12:00 am - 12:00 pm

Inova Fairfax Hospital

3300 Gallows RdFalls Church, VA 22042

Compare with Similar Doctors

Dr. Mary-Margaret Lewis, MD
Dr. Thomas Marshall Masterson, MD
Dr. Eric David Reines, MD
Dr. Bhavini Vinod Trivedi, MD
Dr. Mary-Margaret Lewis, MDDr. Thomas Marshall Masterson, MDDr. Eric David Reines, MDDr. Bhavini Vinod Trivedi, MD
Critical Care MedicineNephrologyInfectious DiseaseAllergy & Immunology
Accepts New Patients
4.2 
2.6 
3.9 
3.7 
42 Years of Experience 42 Years of Experience 44 Years of Experience 29 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English, Spanish Speaks English Speaks English Speaks English, Spanish
Arlington , VAClinton , MDAlexandria , VAFairfax , VA
Med School: Georgetown University School Of Medicine Med School: University Of Virginia School Of Medicine Med School: St Georges University School Of Medicine Med School: Sidney Kimmel Medical College At Thomas Jefferson University
Current Profile
View Profile View Profile View Profile

Insurance Plans Accepted by Dr. Mary-Margaret Lewis

Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.

Medical Specialties

Dr. Mary-Margaret Lewis has the following 3 specialties

Specialty Expertise

Dr. Mary-Margaret Lewis has the following 5 areas of expertise

  • Asthma
  • Critical Care
  • Insomnia
  • Internal Medicine
  • Sleep Medicine

Certifications, License, & Education

42 Years Experience

Dr. Mary-Margaret Lewis holds an active medical license in the states of Virginia, Maryland, and District Of Columbia.

Medical License

Medical Doctor with an active medical license in the state of Virginia that expired in 2026, an active medical license in the state of Maryland that expires in 2026, and an active medical license in the state of District Of Columbia that expired in 2026.

Education & Training

Residency

Completed their residency at Georgetown University Medical Center.

Medical School

Graduated from Georgetown University School Of Medicine in 1995 and Georgetown University School Of Medicine in 1984.

NPI Number

Dr. Lewis' NPI number is 1487645750.

Similar doctors

Frequently Asked Questions

Is Dr. Mary-Margaret Lewis accepting new patients?
Dr. Mary-Margaret Lewis has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
Does Dr. Mary-Margaret Lewis accept my insurance?
You can see the insurance plans that Dr. Mary-Margaret Lewis accepts on their Vitals profile.
What languages does Dr. Mary-Margaret Lewis speak?
Dr. Mary-Margaret Lewis speaks English and Spanish.
How can I make an appointment with Dr. Mary-Margaret Lewis?
You can find contact information for Dr. Mary-Margaret Lewis here on Vitals.
Which hospitals is Dr. Mary-Margaret Lewis affiliated with?
Dr. Mary-Margaret Lewis is affiliated with Virginia Hospital Center, INOVA FAIRFAX HOSPITAL, Suburban Hospital, Inova Lj Murphy Childrens Hospital, Sibley Memorial Hospital, Vcu Health Critical Care Hospital, and VCU HEALTH COMMUNITY MEMORIAL HOSPITAL.

Ensuring Data Transparency and Trust: A Guide to Vitals Doctor Listings and Reviews

Our provider data is gathered directly from physicians and publicly available databases. Providers who verify their profiles gain the ability to update information, offering additional details about their specialties,education, treated conditions, performed procedures, and accepted insurances.

Reviews on Vitals are submitted by users only. Recognizing the valuable insights these reviews offer into a doctor's reputation, we maintain internal policies and protocols to ensure the quality and accuracy of all reviews. Importantly, providers cannot delete or alter reviews independently. Reviews can only be deleted or changed following an internal assessment by our customer service team.

Your feedback is highly valued and we encourage you to contact our support team should you encounter any issues.