John Lindsay Marshall, MD| Gastrointestinal Medical Oncology, Medical Oncology | MedStar Health

John Lindsay Marshall, MD
Provider accepts MedStar Select insurance

4.9 out of 5 (278 reviews)

Specialties: Gastrointestinal Medical Oncology, Medical Oncology

Languages: English

202-444-1229

About me

Chief, Hematology and Oncology
Professor of Medicine and Oncology
Director, Otto J Ruesch Center for the Cure of Gastrointestinal Cancers
Lombardi Comprehensive Cancer Center Georgetown University

Dr. Marshall received his training at Duke University, the University of Louisville, and Georgetown University. Dr. Marshall is an internationally recognized expert in new drug development for GI cancer, with expertise in phase I, II, and III trial design, and has served as Principal Investigator for more than one hundred clinical trials throughout his career. While he has an interest in many areas of cancer research, his primary focus is on the use of precision medicine in treating cancer. Dr. Marshall has become an outspoken advocate for GI cancer patients and the importance of clinical research participation. In 2009, he established the Otto J Ruesch Center for the Cure of GI Cancers, an organization solely focused on improving the lives of GI cancer patients through innovative research, personalized medicine, and focused advocacy. In 2015, Dr. Marshall both established and directed the Precision Oncology Alliance, a national alliance established to study the impact of molecular profiling on cancer research, value, and outcomes. He currently is serving as the Oncology CMO for Indivumed, creating a global precision medicine research network.

Dr. Marshall's passion for medicine began at an early age when, at 14, he lost his mother to non-Hodgkin lymphoma and dedicated himself to becoming a doctor and helping find a cure for cancer. His deep care for his patients and his warm humor help Dr. Marshall develop strong doctor-patient relationships. He counts the relationships with his patients as one of the most gratifying parts of his job.

In 2006, he acquired the additional perspective of being a caregiver for a cancer patient as his wife, Liza, was diagnosed with an aggressive form of breast cancer and underwent nine months of treatment. In 2021, he and his wife published their first book, “Off Our Chests,” exploring the world of cancer medicine and the impact of a cancer diagnosis on patients, caregivers, and cancer professionals.

Dr. Marshall lives in Arlington, Virginia, with his wife.

About MedStar Georgetown Cancer Institute
MedStar Georgetown is part of the MedStar Georgetown Cancer Institute, which combines medical expertise, the latest therapies, and research across MedStar Health. Our research engine, the Georgetown Lombardi Comprehensive Cancer Center, is the only National Cancer Institute-designated comprehensive cancer center in the Washington, D.C., region. This partnership means we provide access to cutting-edge clinical trials and the latest breakthroughs in cancer care.

Clinical areas of focus

  • Colorectal Malignancy
  • Esophageal Cancer
  • Gastrointestinal (GI) Cancer
  • Gastrointestinal (GI) Stromal Tumors
  • Hepatoblastoma
  • Liver Cancer
  • Liver Metastases
  • Pancreas Cancer
  • Rectal Cancer
  • Small Bowel Cancer
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Conditions and procedures

Conditions I treat

  • Anal Cancer
  • Anorectal Cancer
  • Appendiceal Cancer
  • Bile Duct Mass
  • Carcinoid Of Stomach
  • Carcinoid Tumor
  • Carcinoid Tumor Of Pancreas
  • Cholangiocarcinoma
  • Colorectal Malignancy
  • Cystadenoma Of Pancreas
  • Esophageal Cancer
  • Gallbladder Cancer
  • Gastrin Secreting Tumor Of Pancreas
  • Gastroesophageal Junction Cancer
  • Gastrointestinal (GI) Cancer
  • Gastrointestinal (GI) Stromal Tumors
  • Hepatobiliary Malignancies
  • Hepatoblastoma
  • Insulinoma
  • Islet Cell Tumor
  • Liver Cancer
  • Liver Metastases
  • Lynch Syndrome
  • Malignant Carcinoid Tumor Of Colon
  • Malignant Neoplasm Of Pancreatic Duct
  • Malignant Rectal Neoplasm
  • Malignant Tumor Of Extrahepatic Bile Duct
  • Metastatic Colon Cancer
  • Neuroendocrine Tumors
  • Pancreas Cancer
  • Pancreas Head Cancer
  • Pancreas Tail Cancer
  • Pancreatic Mass
  • Pseudomyxoma Peritonei
  • Rectal Cancer
  • Rectal Carcinoma In Situ
  • Recurrent Colorectal Cancer
  • Small Bowel Cancer
  • Small Intestine Cancer
  • Stomach Cancer
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Procedures I perform

  • Biologic Therapy For Gastrointestinal Diseases
  • Cancer Chemotherapy
  • Cancer Immunotherapy
  • Chemoradiation
  • Colon Cancer Chemotherapy
  • Gastrointestinal (GI) Cancer Genomics
  • Liver Cancer Genomics
  • Pancreatic Cancer Genomics
  • Rectal Cancer Genomics
  • Stomach Cancer Genomics
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Practice locations

Distance from Change LocationEnter your Location

3800 Reservoir Road Northwest
Lombardi Cancer Center
Washington, DC, 20007

202-444-2223

Fax 202-444-1229

Get Directions

miles away

Fax 202-444-1229

Insurance

MedStar Medical Group accepts most major health insurance plans. If you are uncertain as to whether your individual health insurance plan is accepted at MedStar Medical Group, please call your insurance company.

  • List of insurance plans we accept
    • Aetna Elect Choice/ EPO (Aetna Health Fund) Innovation Health: Network Only Plus
    • Aetna Quality Point of Service (POS)
    • Aetna Student Health Insurance
    • Aetna Medicare Advantage HMO & PPO Plans
    • CFBCBS BlueChoice HMO
    • CFBCBS Blue Choice Opt Out Plus Open Access (POS)
    • CFBCBS Maryland Point of Service Plan (MPOS)
    • CFBCBS Maryland Indemnity or PPO
    • CFBCBS (NCA) Indemnity
    • CIGNA HMO & Network (HMO)
    • CIGNA POS/Network POS
    • Great-West Healthcare POS/CIGNA
    • CIGNA Indemnity
    • Coventry Health Care of Virginia
    • Coventry of Delaware HMO/PPO
    • First Health PPO
    • FIRST HEALTH
    • Tricare Prime
    • Tricare for Life (Medicare Supplemental Plan)
    • MedStar Family Choice - Maryland Health Choice
    • MedStar Select (MedStar Associates' Plan)
    • United Healthcare Select HMO - EPO/NPP
    • United Healthcare Select Plus (POS)
    • United Healthcare Choice Plus
    • United Student Resources
    • M.D. IPA (HMO)
    • M.D. IPA Preferred (POS)
    • Optimum Choice Preferred (POS) & OCI Direct (HMO)
    • Mamsi Life & Health (Indem./PPO)
    • Aetna Worker's Compensation Network
    • Coventry Health Care National Network PPO
    • United Healthcare Choice
    • CIGNA HMO Open Access (OA)
    • Network OA
    • POS OA & OA Plus
    • CIGNA EPO
    • PPO and PPO Plus
    • Choice Fund PPO
    • CFBSBC Blue Preferred PPO
    • HealthyBlue PPO
    • CFBCBS Blue Choice Opt Out Open Access
    • BlueChoice Open Access
    • Aetna Traditional Choice (PPO)
    • Innovation Health: Indemnity
    • Aetna Open Choice (PPO)
    • Innovation Health: PPO
    • Aetna Managed Choice (POS)
    • Innovation Health: POS Plus
    • Aetna Elect Choice/ Open Access (POS)
    • Innovation Health: Open Network Only Plus
    • Aetna HMO-Open Access/Select OA/HealthFund/Health Network Option OA
    • Innovation Health: POS
    • Open HMO
    • Opoen HMO Option
    • Open EPO Plus
    • Aetna Managed Choice Open Access (POS)
    • Choice POS & Choice POS II
    • Innovation Health: Open POS Plus
    • Open POS II
    • Aetna HMO
    • Select HMO/HealthFund/Health Network
    • Aetna Innovations: HMO & EPO Plus
    • Blue Choice Advantage & Healthy Blue (HMO, POS)"
    • CFBCBS EPO
    • CFBCBS Federal Employee Program (Std/Basic PPO/Blue Focus)
    • Kaiser MD Medicaid MCO
    • Kaiser Permanente Flexible Choice POS
    • Kaiser Permanente Medicare Plus (Medicare Supplemental Plan)
    • Kaiser Permanente Select
    • Kaiser Permanente Signature
    • Kaiser Permanente Signature-Added Choice
    • Kaiser PermanenteSelect-Added Choice
    • Kaiser Virginia Premier
    • Medicare Fee for Service
    • Private Health Care Systems (PHCS) (PPO)
    • UHC Community Plan of MD
    • United Healthcare Options (PPO) (includes Empire PPO, GEHA, Compass Rose)"
    • UnitedHealthcare and AARP Medicare Complete Plans/ UHC Group Medicare Advantage Plans HMO, POS, PPO"
    • UnitedHealthcare Medicare Adv/Special Needs Plans
    • Kaiser Permanente Medicare Advantage Signature and Select (aka Senior Advantage)"

Videos

Education

Board Certification: American Board of Internal Medicine, Medical Oncology

Fellowship Program: MedStar Georgetown University Hospital (1993)

Residency Program: MedStar Georgetown University Hospital (1991)

Internship Program: MedStar Georgetown University Hospital (1989)

Medical School: University of Louisville (1988)

Awards

    • 2008-present―Director, Otto J. Ruesch Center for the Cure of Gastrointestinal Cancers, Georgetown University
    • 1998-present—Director, Gastrointestinal Oncology, Lombardi Comprehensive Cancer Center
    • 2020— Team Science Award, The Society for Immunotherapy of Cancer
    • 2019―Edward M. Kovach Cura Personalis Award, Georgetown University
    • 2019—Waun Ki Hong MD Memorial Lecture, Yonsei Song-dang Institute for Cancer Research, Seoul, Korea
    • 2017—Nobility in Science Award, National Pancreas Foundation
    • 2016―Educator of the Year Award, Physicians’ Education Resource®, LLC (PER®)
    • 2015-2019―Director, Caris Life Sciences, Precision Oncology Alliance
    • 2014-present—Founding director, GI Cancer Alliance Network
    • 2008-2019― America's Top Doctors for Cancer, Castle Connolly Medical Ltd
    • 2008-2009—President, International Society of GI Oncology
    • 2001―Gallo Award for Outstanding Clinical Research, The Cancer Institute of New Jersey
    • 1992―American Cancer Society Fellow

Ratings and reviews

  • Provider explained things understandably

    4.9
  • Provider listened carefully

    4.9
  • Provider knew medical history

    4.9
  • Provider showed respect

    5.0
  • Provider spent enough time with patient

    4.9
  • Jan 24, 2023

    Excellent

  • Jan 5, 2023

    Dr. Marshall is simply wonderful and 16 really takes his time to make sure you understand what is happening. I trust him completely which is not easy when getting treatment for cancer.

  • Jan 3, 2023

    Dr Marshall is wonderful. He explained all plans/decisions to me thoroughly. His kindness and support were exceptional