Overview
John Marshall is an Oncologist practicing medicine in Washington, Washington, D.c..
Dr. Marshall is highly rated in 14 conditions, according to our data. His clinical expertise encompasses Familial Colorectal Cancer, Colorectal Cancer, Lynch Syndrome, Hepatectomy, and Pancreatectomy.
Specialties
Licenses
Hospital Affiliations
Languages Spoken
Gender
Insurance
Accepted insurance can change. Please verify directly with the provider.
Accepted insurance plans:
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- POS
- PPO
- HMO
- POS
- PPO
- EPO
- HMO
- PPO
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- OTHER COMMERCIAL
- OTHER MEDICARE
- OTHER MEDICARE PART D
- PPO
- EPO
- HMO
- PPO
- HMO
- INDEMNITY
- POS
- PPO
- EPO
- POS
- PPO
- OTHER MANAGED MEDICAID
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE
- OTHER MEDICARE PART D
Locations
3800 Reservoir Rd NW, Washington, DC 20007
MedStar Georgetown University Hospital
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Office
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MedStar Georgetown University Hospital
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Frequently Asked Questions about Dr. John L. Marshall
How do I make an appointment with Dr. John L. Marshall?
You can book an appointment with Dr. John L. Marshall by calling their office at 202-444-2000. MediFind provides direct contact information so you can schedule visits, second opinions, or consultations without navigating third-party calendars.
Is Dr. John L. Marshall a top-rated expert for Familial Colorectal Cancer?
MediFind is an objective health platform that identifies experts based on real-world data. Dr. John L. Marshall is classified as an Distinguished expert for Familial Colorectal Cancer, meaning they are among the top experts in the country for this condition. This ranking is based on their volume of patients, published research, and peer connections.
What conditions does Dr. John L. Marshall specialize in?
While Dr. John L. Marshall is a Oncology, they have specific expertise in Familial Colorectal Cancer, Colorectal Cancer, and Lynch Syndrome. MediFind analyzes a doctor's articles and referral patterns to identify their specific areas of focus within Oncology.
Does Dr. John L. Marshall accept my insurance?
Dr. John L. Marshall accepts most major insurance plans, including Aetna and Anthem BCBS. We recommend calling the office directly at 202-444-2000 to verify that your specific plan is currently accepted before your visit.
Areas of Expertise
MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.
Learn more about MediFind’s expert tiers
- Distinguished
- Colorectal CancerDr. Marshall isDistinguished. Learn about Colorectal Cancer.
- Familial Colorectal CancerDr. Marshall isDistinguished. Learn about Familial Colorectal Cancer.
- Familial Pancreatic CancerDr. Marshall isDistinguished. Learn about Familial Pancreatic Cancer.
- Lynch SyndromeDr. Marshall isDistinguished. Learn about Lynch Syndrome.
- Pancreatic CancerDr. Marshall isDistinguished. Learn about Pancreatic Cancer.
- Advanced
- Anal CancerDr. Marshall isAdvanced. Learn about Anal Cancer.
- Appendix CancerDr. Marshall isAdvanced. Learn about Appendix Cancer.
- Cholangiocarcinoma (Bile Duct Cancer)Dr. Marshall isAdvanced. Learn about Cholangiocarcinoma (Bile Duct Cancer).
- Gastroenteropancreatic Neuroendocrine Tumor (GEP-NET)
- Gastroesophageal Junction CancerDr. Marshall isAdvanced. Learn about Gastroesophageal Junction Cancer.
- Neuroendocrine TumorDr. Marshall isAdvanced. Learn about Neuroendocrine Tumor.
- Pseudomyxoma PeritoneiDr. Marshall isAdvanced. Learn about Pseudomyxoma Peritonei.
- Squamous Cell Carcinoma of the Anal Canal (SCAC)
- Stomach CancerDr. Marshall isAdvanced. Learn about Stomach Cancer.
- Experienced
- Acute Myeloblastic Leukemia with MaturationDr. Marshall isExperienced. Learn about Acute Myeloblastic Leukemia with Maturation.
- Acute Myeloblastic Leukemia without Maturation
- Acute Myeloid Leukemia (AML)Dr. Marshall isExperienced. Learn about Acute Myeloid Leukemia (AML).
- Ampullary CancerDr. Marshall isExperienced. Learn about Ampullary Cancer.
- Desmoplastic Small Round Cell TumorDr. Marshall isExperienced. Learn about Desmoplastic Small Round Cell Tumor.
- Gallbladder AdenocarcinomaDr. Marshall isExperienced. Learn about Gallbladder Adenocarcinoma.
- Gallbladder CancerDr. Marshall isExperienced. Learn about Gallbladder Cancer.
- Gastrointestinal Stromal TumorDr. Marshall isExperienced. Learn about Gastrointestinal Stromal Tumor.
- GlucagonomaDr. Marshall isExperienced. Learn about Glucagonoma.
- HepatectomyDr. Marshall isExperienced. Learn about Hepatectomy.
- Liver CancerDr. Marshall isExperienced. Learn about Liver Cancer.
- MelanomaDr. Marshall isExperienced. Learn about Melanoma.
- MesenchymomaDr. Marshall isExperienced. Learn about Mesenchymoma.
- Metastatic Brain TumorDr. Marshall isExperienced. Learn about Metastatic Brain Tumor.
- Metastatic InsulinomaDr. Marshall isExperienced. Learn about Metastatic Insulinoma.
- Myelodysplastic Syndrome (MDS)Dr. Marshall isExperienced. Learn about Myelodysplastic Syndrome (MDS).
- PancreatectomyDr. Marshall isExperienced. Learn about Pancreatectomy.
- Pancreatic Ductal AdenocarcinomaDr. Marshall isExperienced. Learn about Pancreatic Ductal Adenocarcinoma.
- Pancreatic Islet Cell TumorDr. Marshall isExperienced. Learn about Pancreatic Islet Cell Tumor.
- PancreatoblastomaDr. Marshall isExperienced. Learn about Pancreatoblastoma.
- Posterior Fossa TumorDr. Marshall isExperienced. Learn about Posterior Fossa Tumor.
- Primitive Neuroectodermal Tumor (PNET)Dr. Marshall isExperienced. Learn about Primitive Neuroectodermal Tumor (PNET).
- Undifferentiated Pleomorphic SarcomaDr. Marshall isExperienced. Learn about Undifferentiated Pleomorphic Sarcoma.