Gary William Thompson, MD| Gastroenterology | MedStar Health
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Gary William Thompson

Gary William Thompson, MD
Provider is directly employed by MedStar Health

4.9 out of 5 (2083 reviews)

Specialties: Gastroenterology

Languages: English

(202) 877-5844

Clinical areas of focus

  • Colonoscopy
  • Colonoscopy Through Stoma
  • Colonoscopy With Biopsy
  • Colonoscopy With Injection
  • Dilation Of Esophagus
  • Enteroscopy
  • Enteroscopy With Biopsy
  • Enteroscopy With Bleeding Control
  • Gallstones
  • Gastroesophageal Reflux Disease (GERD) In Children
  • Hemorrhage Control
  • Intestinal Dysmotility
  • Lower Gi Endoscopy
  • Sigmoidoscopy With Biopsy
  • Stomach Ulcers
  • Upper Gi Endoscopy
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Conditions and procedures

Conditions I treat

  • Abdominal Cramping
  • Abdominal Distension
  • Abdominal Pain
  • Abnormal Digestive Findings
  • Abnormal Stool
  • Acute Pancreatitis
  • Alimentary Tract Foreign Body
  • Altered Bowel Habits
  • Anal Abscess
  • Anal Fissures
  • Anus And Rectum Diseases
  • Aphagia
  • Aphagia And Dysphagia
  • Appendiceal Cancer
  • Autoimmune Hepatitis
  • Benign Neoplasm Of Colon, Rectum, Anus And Anal Canal
  • Benign Neoplasm Of Digestive System
  • Bile Duct Cancer
  • Bile Duct Stones
  • Biliary Tract Disease
  • Blood In Stool
  • Bowel Obstruction
  • Carcinoma In Situ Of Digestive Organs
  • Choledocholithiasis
  • Chronic Diarrhea
  • Colitis
  • Colon Cancer
  • Colon Disease
  • Colon Polyps
  • Colonoscopy
  • Constipation
  • Crohn's Disease
  • Crohn's Disease [Regional Enteritis]
  • Diaphragmatic Hernia
  • Digestive System Cancer
  • Digestive System Complications
  • Digestive System Diseases
  • Digestive System Symptoms
  • Diseases Of Esophagus
  • Diseases Of Stomach And Duodenum
  • Diverticular Disease
  • Duodenal Ulcer
  • Duodenitis
  • Dysphagia
  • Esophageal Cancer
  • Esophagitis
  • External Hemorrhoids
  • Flatulence
  • Functional Dyspepsia
  • Functional Intestinal Disorders
  • Gallbladder Cancer
  • Gallstones
  • Gastric Cancer
  • Gastric Varices
  • Gastritis
  • Gastroenteritis
  • Gastroesophageal Reflux Disease (GERD) In Children
  • Gastrointestinal Bleeding
  • Gastrointestinal Stromal Tumor (GIST)
  • Helicobacter Pylori
  • Hemangioma
  • Hemorrhoids
  • Hepatitis
  • Hepatitis B
  • Hepatitis C
  • Hepatomegaly
  • Hepatomegaly And Splenomegaly
  • Inflammatory Bowel Disease
  • Intestinal Dysmotility
  • Intestinal Infections
  • Intestinal Stenosis
  • Irritable Bowel Syndrome
  • Liver Cirrhosis
  • Liver Encephalopathy
  • Malabsorption
  • Malignant Neuroendocrine Tumors
  • Noninfective Gastroenteritis
  • Pancreatic Diseases
  • Pancreatitis
  • Paralytic Ileus And Intestinal Obstruction
  • Perianal Itching
  • Perianal Pain
  • Peripheral Vascular Disease Of The Intestines
  • Polycystic Liver Disease
  • Postoperative Ileus
  • Postprandial Diarrhea
  • Rectal Cancer
  • Rectal Pain
  • Small Intestine Cancer
  • Stomach Cancer
  • Stomach Ulcers
  • Ulcerative Colitis
  • Viral Hepatitis
  • Vomiting And Nausea
  • Vomiting Blood
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Procedures I perform

  • Capsule Endoscopy
  • Colonoscopy
  • Colonoscopy Through Stoma
  • Colonoscopy With Biopsy
  • Colonoscopy With Injection
  • Dilation Of Esophagus
  • Endoscopic Mucosal Resection
  • Endoscopic Retrograde Cholangiopancreatography (ERCP)
  • Endoscopic Stomach Feeding Device Insertion
  • Enteroscopy
  • Enteroscopy With Biopsy
  • Enteroscopy With Bleeding Control
  • Esophageal Dilation
  • Esophagogastroduodenoscopy With Biopsy
  • Flexible Colonoscopy With Biopsy
  • Gastric Manometry
  • Gastrointestinal Motility Study
  • Hemorrhage Control
  • Hydrogen Breath Test
  • Inflammatory Bowel Disease
  • Lactose Intolerance Testing
  • Lower Gi Endoscopy
  • Sigmoidoscopy With Biopsy
  • Stomach Pain Treatment
  • Upper Gi Endoscopy
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Practice locations

Distance from Change Location Enter your Location

18111 Prince Philip Dr
Ste 124
Olney, MD, 20832

301-774-4300
Get Directions

miles away

Fax 301-774-1034

110 Irving St NW
Washington, DC, 20010

202-877-5822
Get Directions

miles away

Fax 901-215-4499

106 Irving St NW
POB South 216
Washington, DC, 20010

202-877-5840
Get Directions

miles away

Fax 202-877-5844

Insurance

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

  • List of insurance plans we accept
    • United Medicare Private Fee-for-Service (PFFS) plans
    • MD IPA (HMO) & MD IPA Preferred Cardiac Global
    • Aetna Elect Choice/ EPO (Aetna Health Fund)
    • CareFirst BlueCross BlueShield Advantage Core/Enhanced
    • Medicare Direct
    • Aetna Advantage 5750
    • CareFirst Administrators
    • UnitedHealthcare Medicare Adv. Special Needs Plans
    • United Healthcare Select HMO-EPO/NPP Cardiac Global
    • TRICARE East Select
    • Aetna HMO-Open Access/Select OA/HealthFund/Health Network Option OA
    • Lasso Healthcare - Medicare Medical Savings Account
    • Humana Medicare Advantage - HMO Open Access
    • Kaiser Permanente Select
    • Aetna Managed Choice (POS)
    • Choice Fund PPO
    • MultiPlan, Inc
    • MedStar Family Choice DC Healthcare Alliance
    • UHC Group Medicare Advantage Plans (HMO, POS, PPO)
    • Aetna Better Health of MD
    • CareFirst Maryland Point of Service Plan
    • Alterwood Advanatge HMO & DSNP Plans
    • Cigna Preferred Medicare (HMO)
    • BCBS Out-of-State Medicare Plans (Blue Advantage)
    • Veterans Affairs Community Care Network
    • Anthem BCBS Medi Blue SNP
    • CareFirst Blue Card Program
    • CIGNA SureFit (HMO)
    • M.D. IPA Preferred (POS)
    • Select HMO/HealthFund/Health Network
    • TRICARE for Life East
    • United Healthcare Choice Plus Cardiac Global
    • Aetna Managed Choice Open Access (POS)
    • Anthem BCBS Medi Blue Dual Adv
    • WellPoint Maryland - Maryland Health Choice
    • CareFirst MedStar PPO
    • Private Fee-for-Service Plans (PFFS)
    • IH-HMO
    • IH-POS
    • Magellan Complete Care of VA - VA Medicaid MCO
    • Maryland Physicians Care MCO
    • Police and Fire Clinic
    • IH-Network Only Plus
    • MedStar Family Choice - Maryland Health Choice
    • Kaiser Permanente HMO Plus and DHMO Plus Member
    • Cigna Achieve Medicare (HMO C-SNP)
    • Kaiser Permanente Select Cardiac Global
    • Blue Choice Advantage
    • Kaiser Permanente Flexible Choice 3-tier POS
    • United Healthcare Options (PPO)
    • Aetna Signature Administrator PPO/TPA
    • United Healthcare Select Plus (POS)
    • Advantra Platinum (PPO)
    • CIGNA Indemnity
    • Tricare Reserve Select
    • Humana Gold Plus HMO
    • Kaiser Permaenete Signature - Added Choice Cardiac Global
    • IH-Open HMO
    • IH-Indemnity
    • IH-Open POS II
    • Jai Medical Systems - Maryland Health Choice
    • CareFirst (NCA) Indemnity
    • CIGNA EPO
    • Kaiser Permanente Medicare Plus
    • CareFirst NASCO
    • Kaiser Permanente Medicare Advantage Signature and Select
    • Priority Partners - Maryland Health Choice
    • Kaiser Maryland Medicaid MCO
    • TriWest Healthcare Alliance
    • IH-EPO Plus
    • Amerigroup DC Healthy Families
    • BlueChoice Open Access
    • United Healthcare Choice Cardiac Global
    • Aetna Better Health of VA
    • Aetna Classic 5000
    • IH-Open EPO Plus
    • Geisinger Medicare Advantage
    • Aetna Traditional Choice (PPO)
    • IH-POS Plus
    • Sentara Health
    • TRICARE East Prime
    • HumanaChoice PPO
    • Kaiser Permanente Signature - Added Choice
    • HumanaChoice Honor's plan PPO
    • Private Health Care Systems (PPO)
    • AmeriHealth Caritas DC Healthy Families
    • AmeriHealth Caritas DC Healthcare Alliance
    • CareFirst Blue Preferred PPO
    • Kaiser Permanente Signature
    • First Health PPO
    • UnitedHealthcare Medicare Advantage DSNP District of Columbia
    • HealthyBlue PPO
    • Choice POS II
    • DC/MD SHOP QHP Small Business Plans
    • Options PPO Cardiac Global
    • CIGNA PPO Plus
    • Aetna HMO
    • Anthem Federal Employee Program Basic
    • Navigate
    • Optimum Choice Preferred (POS)
    • Aetna Open Choice (PPO)
    • CareFirst Maryland Indemnity or PPO
    • Cigna Alliance Medicare (HMO)
    • Uniformed Services Family Health Plan
    • Core Essential (HMO)
    • Medicare Advantage - Advantra Value (PPO)
    • Johns Hopkins Advantage MD PPO
    • Optima Family Care MCO - VA Medicaid MCO
    • CIGNA POS/Network POS
    • Network OA
    • M.D. IPA (HMO)
    • CareFirst EPO
    • Anthem BCBS Medi Blue Plus
    • Healthy Blue (HMO, POS)
    • United Healthcare Select HMO - EPO/NPP
    • Aetna Elect Choice/ Open Access (POS)
    • Coventry Health Care National Network PPO
    • Beech Street PPO
    • United Student Resources
    • Choice POS
    • Cigna True Choice Plus Medicare (PPO)
    • IH-Open Network Only Plus
    • CareFirst MedStar Select PPO
    • Coventry Health Care of Virginia
    • Coventry of Delaware HMO/PPO
    • Aetna Advantage 6350
    • IH-Open POS Plus
    • Aetna Medicare Advantage HMO & PPO Plans
    • Anthem Federal Employee Program Standard
    • Erickson Advantage Plans
    • IH-Open HMO Option
    • AMERIVANTAGE/Amerigroup Community Care
    • Cigna True Choice Medicare (PPO)
    • CareFirst Dual Prime HMO-SNP
    • OA Plus
    • Medicare FFS
    • BCBS of Michigan (BCN Advantage,Security Blue, Freedom, Medicare PLUS Blue Group PPO)
    • Aetna Premier 200PD
    • Choice POS II Open Access
    • Choice Care Network/HUMANA (PPO)
    • United Healthcare Community Plan - VA Medicaid MCO
    • Mamsi Life & Health (Indem./PPO)
    • Aetna Basic
    • CareFirst Group Medicare Advantage prescription drug benefit (PPO)
    • Aetna VA Exchange
    • Anthem BCBS of VA HealthKeepers (POS & POS OA)
    • Johns Hopkins Advantage MD PLUS PPO
    • CIGNA Connect EPO
    • CIGNA PPO
    • First Health PPO
    • Kaiser Permanente Select - Added Choice
    • United Healthcare Choice Plus
    • UHC Passport
    • Fee-for-Service (FFS) District of Columbia, Maryland and Virginia Medicaid
    • Anthem BCBS of VA HealthKeepers Plus
    • MedStar Family Choice DC Healthy Families
    • HighMark
    • Amerigroup DC Alliance
    • OCI Direct (HMO)
    • CareFirst BlueChoice HMO
    • CareFirst Community Health Plan of MD
    • Cigna TotalCare (HMO D-SNP)
    • Health Services for Children with Special Needs
    • Aetna Student Health Insurance
    • CareFirst Federal Employee Program (Std. & Basic PPO)
    • Optimum Choice & Optimum Choice Preferred (POS) Cardiac Global
    • Aetna Classic 3500
    • IH-PPO
    • Anthem BCBS of VA HealthKeepers (HMO)
    • CareFirst Group Medicare Advantage
    • Employee Health Plan
    • CIGNA HMO & Network (HMO)
    • Aetna Advantage 6350PD
    • UnitedHealthcare and AARP Medicare Complete Plans
    • United Healthcare Navigate Cardiac Global
    • United Healthcare Choice
    • Great-West Healthcare POS/CIGNA
    • CareFirst Blue Choice Opt Out Plus Open Access (POS)
    • Optimum Choice
    • Aetna Classic 5000PD
    • CareFirst FEP Blue Focus
    • Johns Hopkins Advantage MD HMO
    • Aetna Quality Point of Service (POS)
    • NYC Medicare Advantage Plus
    • Mamsi Life & Health (Indem./PPO) Cardiac Global
    • Aetna Medicare Advantage PFFS Plan
    • POS OA
    • Kaiser Permanente Flexible Choice POS Cardiac Global
    • Aetna Worker's Compensation Network
    • CareFirst Blue Choice Opt Out Open Access
    • Humana Medicare Advantage - PPO
    • United HealthCare Community Plan - Maryland Health Choice Program
    • Anthem BCBS of VA Key Care POS/PPO/Indemnity
    • UnitedHealthcare Individual Exchange Plans
    • HUMANA/Choice Care Medicare Plans (Choice, Gold Choice)
    • CIGNA HMO Open Access

Education

Board Certification: American Board of Internal Medicine, Gastroenterology

Residency: Washington Hospital Center (1993)

Residency: Washington Hospital Center (1991)

Medical School: Howard University (1988)

Medical School: University of Virginia (1984)

Ratings and reviews

  • Explanations the care provider gave you about your problem or condition

    4.9
  • Extent to which the care provider listened to you

    4.9
  • Care provider’s discussion of any proposed treatment (options, risks, benefits, etc.)

    4.9
  • Provider included you in decisions

    4.9
  • Concern the care provider showed for your questions or worries

    4.9
  • Likelihood of recommending this care provider to others

    4.9
  • May 31, 2026

    Dr. Thompson explained in terms I could clearly understand.

  • May 30, 2026

    Great experience

  • May 26, 2026

    Dr. Thompson was excellent and took my concerns seriously. He ordered additional tests which my primary care doctor did not order.