4.5
41 Ratings with 23 written Reviews
Summary
Dr. John Marshall brings extensive expertise in gastroenterology, hematology, and oncology to his practice at MedStar Georgetown University Hospital. A graduate of the University of Louisville School of Medicine, he completed his residency at Georgetown University Hospital, where he has built a distinguished career spanning 38 years. His comprehensive training in these interconnected specialties allows him to provide integrated care for patients with complex digestive and cancer-related conditions. Dr. Marshall communicates with patients in English.
Based at MedStar Georgetown University Hospital in Washington, DC, Dr. Marshall specializes in treating colorectal cancer, including advanced metastatic cases. He performs detailed imaging studies such as CT scans and CT enterography to help diagnose and monitor various conditions. Patients consistently rate his care highly, giving him an average rating of 4.5 out of 5 stars.
Based at MedStar Georgetown University Hospital in Washington, DC, Dr. Marshall specializes in treating colorectal cancer, including advanced metastatic cases. He performs detailed imaging studies such as CT scans and CT enterography to help diagnose and monitor various conditions. Patients consistently rate his care highly, giving him an average rating of 4.5 out of 5 stars.
Overview based on verified provider data
Quick Facts
- accepting new patients
- 38 years of experience
- 23 insurance plans accepted
- speaks English
- Georgetown University Hospital
- 23 written reviews
- 1 award
- 3 specialties
- 16 areas of expertise
- 1 board certification
- 1 hospital affiliation
- 1 office location
- Male
Patients’ Perspective
- Gave an accurate diagnosis
- Had a good bedside manner
- Spent time with me
Based on patient feedback. Read the reviews
Awards
Vitals Preferred Provider
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Office Location
MedStar Georgetown University Hospital
3800 Reservoir Rd NwWashington, DC 20007 Tel: (202) 444-2000
Mon12:01 am - 11:59 pm
Tue12:01 am - 11:59 pm
Wed12:01 am - 11:59 pm
Thu12:01 am - 11:59 pm
Fri12:01 am - 11:59 pm
Sat12:01 am - 11:59 pm
Sun12:01 am - 11:59 pm
Compare with Similar Doctors
 | |||
| John L. Marshall, MD | Joseph James Jennings, MD | Shandiz Shahbazi, MD | Robert James Schenck, MD |
| Gastroenterology | Gastroenterology | Gastroenterology | Gastroenterology |
| Accepts New Patients | Accepts New Patients | Accepts New Patients | Accepts New Patients |
| 38 Years of Experience | 14 Years of Experience | 8 Years of Experience | 10 Years of Experience |
| No Virtual Visit Option | No Virtual Visit Option | No Virtual Visit Option | No Virtual Visit Option |
| Speaks English | Speaks English | Speaks English, Farsi | Speaks English |
| Washington , DC | McLean , VA | McLean , VA | McLean , VA |
| Med School: University of Louisville School of Medicine | Med School: Georgetown University | Med School: Virginia Commonwealth University | Med School: University of Virginia School of Medicine |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by John L. Marshall
Medical Specialties
John L. Marshall has the following 3 specialties
Specialty Expertise
John L. Marshall has the following 16 areas of expertise
Certifications, License, & Education
38 Years Experience
John L. Marshall holds an active medical license in the state of District Of Columbia.
Medical License
Medical Doctor with an active medical license in the state of District Of Columbia that expires in 2027.
Education & Training
Residency
Completed their residency at Georgetown University Hospital.
Medical School
Graduated from University of Louisville School of Medicine in 1988.
NPI Number
John L. Marshall's NPI number is 1316935844.
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Frequently Asked Questions
- What languages does John Marshall speak?
- John Marshall speaks English.
- Where is John Marshall's office located?
- John Marshall's office is located at 3800 Reservoir Rd Nw, Washington, DC, 20007.
- Does John Marshall accept my insurance?
- You can see the insurance plans that John Marshall accepts on their Vitals profile.
- Which hospitals is John Marshall affiliated with?
- John Marshall is affiliated with Medstar Georgetown University Hospital.
- Is John Marshall accepting new patients?
- John Marshall is accepting new patients on Vitals. View John Marshall's profile on Vitals to make an appointment.
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