MedStar St. Mary’s Outpatient Pavilion

outpatient pavilion map

Located just behind the main hospital building, the MedStar St. Mary’s Hospital Outpatient Pavilion houses our Cancer Care & Infusion Services, Specialty Physicians at St. Mary’s, Outpatient Imaging, Outpatient Lab, Health Connections, and Marketing, Public Relations, and Philanthropy office.

Opened in 2011, the two-story building is beautifully designed and offers a wide range of services and leading-edge technologies to better serve patients promptly and conveniently.

Read below for more information. 


First Floor

Cancer Care & Infusion Services

The Cancer Care & Infusion Services department at MedStar St. Mary’s Hospital delivers the highest quality of care with compassion in a supportive, welcoming environment. We endeavor to provide you with care as excellent or better than in any other major hospital, but in the comfort of your home community. We work closely with medical oncologists and surgeons in all of the Washington and Baltimore area hospitals and cancer centers, including MedStar Georgetown University Hospital’s Lombardi Comprehensive Cancer Center. With 11 total treatment bays, including two private isolation rooms for patient safety, the center provides both inpatient and outpatient services. Most of your chemotherapy needs can be met at MedStar St. Mary’s. 

Call 301-475-6070 for more information.

Treatments and services offered:

  • Bio-therapy and chemotherapy
  • Bone marrow aspirations and biopsies
  • Blood/ blood product transfusions
  • Venous access device management
  • Intravenous hydration and antibiotics
  • Pain and symptom management
  • Rehabilition
  • Counseling and support groups
  • Soothing garden and patio landscape view
  • Patient library and boutique
  • Nutrition bar and dietitian services
  • State-of-the-art dedicated pharmacy and pharmacist

Outpatient Imaging

Services devoted primarily to diagnostic imaging in this facility include:

  • 1.5 Tesla MRI
  • 20 Slice CT Scanner
  • PET/CT Scanner (mobile)
  • Radiology/Fluoroscopy Systems
  • Ultrasound

To schedule an appointment with a radiology specialist, call 301-475-6399.

Note: Nuclear medicine and inpatient imaging continue to be conducted in the main hospital building.

Women's Health Services 

The Women's Health Services in the Outpatient Pavilion maintains a separate suite of rooms within Outpatient Imaging. To schedule an appointment for one of the below services, call 301-475-6399.

  • Digital Mammography
  • Breast Ultrasound
  • Breast MRI
  • Galactogram/Ductography
  • Lymphoscinitigraphy (Nuclear Medicine)
  • Steretactic Breast Biopsy
  • Breast Needle Localization
  • Ultrasound Breast Core Biopsy
  • Breast MRI Biopsy 
  • Bone Densitometry
  • 3D/4D Ultrasound
  • Childbirth outreach services through Health Connections

Laboratory Center Registration 

Registration is located within Outpatient Imaging. Patients must register for all scheduled appointments. 

Second Floor

Laboratory Center

The Outpatient Laboratory hours are from 7 a.m. to 6 p.m., Monday through Friday, and 7 a.m. to noon on Saturdays. Walk-ins accepted for general blood testing. An appointment will be required for glucose tolerance tests, semen analysis and DNA testing. Labcorp and Quest orders are accepted at our three satellite lab locations at the St. Mary's Medical Center in Charlotte Hall, the Chesapeake Charter School Building in Great Mills, and at the Belmont Building in Leonardtown. For more information please call 301-475-6133 or 240-434-7497

Specialty Physicians at St. Mary's 

The Specialty Physicians suites in the Outpatient Pavilion include offices for our specialty physicians as well as exam and procedure rooms. MedStar Georgetown University Hospital, MedStar Washington Hospital Center and our other MedStar Health partners utilize this space on a rotating basis to bring high-quality specialty care closer to home.  The following services are currently available:

MedStar Orthopaedic Institute

Dr. Usman Zahir is available Monday and Wednesday from 8 a.m. to 4:30 p.m., Thursday from 10 a.m. to 6:30 p.m., and Friday from 8 a.m. to 1:30 p.m. Dr. Emmanuel Atiemo is available during regular office hours. To schedule an appointment, call 240-434-7483.

Learn more about our Orthopedic Services.

MedStar Heart and Vascular Institute

Dr. Arthur Flatau is available during office hours. Please call 240-434-4072 to schedule an appointment.

Learn more about our  Vascular Services.

MedStar Washington Hospital Center Colorectal Surgery

Dr. Charles Kim is available from 9 a.m. to 3 p.m. daily. Please call 240-434-4100 to schedule an appointment.

Learn more about our Colon and Rectal Services.

Health Connections (Community Outreach)

Health Connections is the community outreach department at MedStar St. Mary's Hospital. It offers seminars and support groups for all ages with two large Multipurpose Rooms (A & B) for community Classes and Events. If you are interested in attending a class or would like more information, please call 301-475-6019 for more information or to speak with one of our associates.

  • Diabetes management
  • Exercise, weight loss and nutrition management
  • Smoking Cessation 
  • Senior wellness events
  • Support groups 
  • Lactation counseling 

Marketing, Public Relations and Philanthropy