Walid Chalhoub, MD| Gastroenterology | MedStar Health

Walid Chalhoub, MD
Provider is directly employed by MedStar Health

4.7 out of 5 (306 reviews)

Specialties: Gastroenterology

Languages: Spanish, Arabic, French, English


About me

After completing fellowships in both gastroenterology and advanced gastroenterology (ERCP/EUS) at MedStar Georgetown University Hospital, Walid M. Chalhoub, MD, joined the hospital's medical staff in 2016 as an assistant professor of Medicine in the Department of Gastroenterology affiliated with the Georgetown University School of Medicine. Previously, Dr. Chalhoub was an attending physician in general medicine at Memorial Sloan Kettering Cancer Center and an instructor at Weill Medical College of Cornell University in New York City.

Upon graduating from medical school, Dr. Chalhoub first worked for several years as a clinical researcher and coordinator at the Mount Sinai Medical Center. He then completed his internship and residency at the medical center's Elmhurst Program, where he was appointed chief resident followed by an appointment to the medical staff as a general medicine attending physician.

Dr. Chalhoub has a special interest in diagnosing and treating pancreatic and biliary disease with advanced endoscopic techniques. An accomplished researcher, his work has been published in peer-reviewed journals and textbooks, and presented at national conferences including the American College of Gastroenterology Annual Meeting and Digestive Disease Week.

Dr. Chalhoub's Philosophy of Care

My emphasis first and foremost is the quality of care. I treat a patient as a whole. Patients in general are all going through stressful and hard times physically, mentally, and emotionally. We are here to make sure their medical journey feels understood, supported, and treated with the utmost expertise, clarity, dignity, and respect.

Clinical areas of focus

  • Abdominal Distention
  • Abnormal Bowel Movement
  • Abnormal Stool
  • Anal Fissure
  • Bleeding Hemorrhoids
  • Chronic Diarrhea
  • Colonoscopy
  • Constipation
  • Diarrhea
  • Gastrointestinal Bleeding
  • Helicobacter Pylori
  • Postprandial Diarrhea
  • Rectal Pain
  • Stomach Pain
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Conditions and procedures

Conditions I treat

  • Abdominal Bloating
  • Abdominal Distention
  • Abdominal Pain
  • Abnormal Amylase Blood Test
  • Abnormal Bowel Movement
  • Abnormal Liver Function Blood Test
  • Abnormal Stool
  • Achalasia
  • Acute Blood Loss Anemia
  • Acute Pancreatitis
  • Alcoholic Liver Disease
  • Allergic Colitis
  • Allergic Esophagitis
  • Allergic Gastroenteritis
  • Altered Bowel Habits
  • Anal Cancer
  • Anal Carcinoma In Situ
  • Anal Fissure
  • Anal Fistula
  • Anal Itching
  • Anal Pain
  • Anal Polyp
  • Anal Spasm
  • Anal Ulcer
  • Anemia
  • Annular Pancreas
  • Anorectal Disease
  • Anorexia
  • Appendiceal Cancer
  • Autoimmune Hepatitis
  • Barrett's Esophagus
  • Benign Neoplasm Of Colon
  • Bile Duct Mass
  • Biliary Tract Disease
  • Bleeding Hemorrhoids
  • Blood In Stool
  • Bright Red Blood Per Rectum
  • Celiac Disease
  • Choking Sensation
  • Cholangitis
  • Cholecystitis
  • Cholelithiasis
  • Cholestasis
  • Chronic Abdominal Pain
  • Chronic Diarrhea
  • Chronic Pancreatitis
  • Cirrhosis
  • Clostridium Difficile
  • Colic
  • Colitis
  • Collagenous Colitis
  • Colon Stricture
  • Colonic Inertia
  • Colonic Polyps
  • Colorectal Malignancy
  • Constipation
  • Crohn's Disease
  • Diarrhea
  • Digestive Disorders
  • Diverticular Disease
  • Diverticulitis
  • Drug Induced Liver Injury
  • Duodenal Ulcer
  • Duodenitis
  • Dyspepsia
  • Dysphagia
  • Early Satiety
  • Elevated Alkaline Phosphatase Level
  • Elevated Lipase
  • Eosinophilic Colitis
  • Eosinophilic Enteritis
  • Eosinophilic Esophagitis
  • Eosinophilic Gastritis
  • Epigastric Pain
  • Esophageal Cancer
  • Esophageal Disease
  • Esophageal Diverticulum
  • Esophageal Mass
  • Esophageal Spasm
  • Esophageal Stricture
  • Esophageal Thickening
  • Esophageal Ulcer
  • Esophageal Varices
  • Esophagitis
  • Family History Of Colon Cancer
  • Family History Of Colon Polyps
  • Fatty Liver
  • Fecal Impaction
  • Fecal Incontinence
  • Flatulence
  • Focal Nodular Hyperplasia
  • Gallbladder Cancer
  • Gallbladder Disease
  • Gallbladder Polyp
  • Gastric Ulcer
  • Gastritis
  • Gastroenteritis
  • Gastroesophageal Reflux Disease
  • Gastrointestinal (GI) Cancer
  • Gastrointestinal (GI) Stromal Tumors
  • Gastrointestinal Amyloid
  • Gastrointestinal Bleeding
  • Gastrojejunal Ulcer
  • Gluten Sensitivity
  • Helicobacter Pylori
  • Hematemesis
  • Hemorrhage Of Gastrointestinal Tract, Unspecified
  • Hemorrhoids
  • Hepatitis
  • Hepatitis B
  • Hepatitis C
  • Hepatomegaly
  • Hiatal Hernia
  • Ileitis
  • Inflammatory Bowel Disease
  • Intestinal Obstruction
  • Intractable Vomiting
  • Iron Deficiency Anemia
  • Irritable Bowel Syndrome
  • Ischemic Bowel
  • Ischemic Colitis
  • Jaundice
  • Lactose Intolerance
  • Left Upper Quadrant Pain
  • Liver Disease
  • Liver Mass
  • Lymphocytic Colitis
  • Lynch Syndrome
  • Malabsorption
  • Malignant Neoplasm Of Stomach
  • Melena
  • Microscopic Colitis
  • Motility Disorders
  • Nausea
  • Non Alcoholic Fatty Liver Disease
  • Non Alcoholic Steatohepatitis
  • Obesity
  • Obstipation
  • Obstructive Jaundice
  • Odynophagia
  • Ogilvie Syndrome
  • Pancreas Cancer
  • Pancreas Divisum
  • Pancreatic Cyst
  • Pancreatic Insufficiency
  • Pancreatic Pseudocyst
  • Pancreaticobiliary Disease
  • Pancreatitis
  • Peptic Ulcer
  • Peritonitis
  • Pernicious Anemia
  • Personal History Of Colonic Polyps
  • Peutz Jeghers Syndrome
  • Polyposis Syndrome
  • Portal Hypertension
  • Portal Hypertensive Gastropathy
  • Positive Hemoccult Fecal Occult Blood Test
  • Postprandial Diarrhea
  • Primary Biliary Cholangitis
  • Primary Biliary Cirrhosis
  • Proctitis
  • Rectal Bleeding
  • Rectal Cancer
  • Rectal Hemorrhage
  • Rectal Pain
  • Rectal Polyp
  • Rectal Prolapse
  • Right Lower Quadrant Pain
  • Right Upper Quadrant Pain
  • Short Bowel Syndrome
  • Small Bowel Disease
  • Small Intestine Cancer
  • Small Intestine Disease
  • Steatorrhea
  • Stomach Cancer
  • Stomach Cramps
  • Stomach Disorders
  • Stomach Pain
  • Swallowing Problem
  • Toxic Liver Injury
  • Ulcerative Colitis
  • Ulcerative Proctitis
  • Vomiting
  • Weight Loss
  • Whipple's Disease
  • Wilson's Disease
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Procedures I perform

  • Breath Testing
  • Colon Polypectomy
  • Colonoscopy
  • Colorectal Screening
  • Early Detection Of Cancer
  • Endoscopic Mucosal Resection
  • Endoscopic Mucosal Resection Of Esophagus
  • Endoscopic Mucosal Resection Of Large Colon Polyps
  • Endoscopic Retrograde Cholangiopancreatography
  • Endoscopic Ultrasound
  • Esophagogastroduodenoscopy (EGD)
  • Esophagogastroduodenoscopy (EGD) With Botox Injection
  • Esophagogastroduodenoscopy (EGD) With Dilation
  • Feeding Tube Management
  • Feeding Tube Removal
  • Gastrointestinal (GI) Cancer Screening
  • Gastroscopy
  • Gj Tube Evaluation
  • Ileoscopy
  • Peg Tube Evaluation
  • Proctosigmoidoscopy
  • Radiofrequency Ablation For Barrett's Esophagus
  • Sigmoidoscopy
  • Single Balloon Enteroscopy
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Practice locations

Distance from Change LocationEnter your Location

7501 Surratts Road
Suite 206
Clinton, MD, 20735


Fax 301-235-3707

Get Directions

miles away

Fax 301-235-3707

3800 Reservoir Road Northwest
Building 2
Washington, DC, 20007


Fax 877-303-1462

Get Directions

miles away

Fax 877-303-1462


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



Fellowship Program: MedStar Georgetown University Hospital (2015)

Residency Program: Mount Sinai Medical Center (2011)

Medical School: Balamand Medical School (2005)


  • Washingtonian Top Docs for 2021
  • Chief Resident in Internal Medicine, Mount Sinai School of Medicine Elmhurst Program
  • Three time SPIRIT Award Recipient 

News and publications

  • Woo S, Real M, Winslow E, Jha R, Ilagan C, Chalhoub W, Haddad, N. Assessing KRAS/GNAS and biologic behavior using molecular DNA analysis in characterizing pre-malignant pancreatic cysts. Gastrointestinal Endoscopy 2021 Jun doi 10.1016/j.gie.2021.03.537

  • Woo S, Real M, Will B, Kim E, Mandaliya R, Chalhoub W, Haddad, N. Pancreatitis Following Endoscopic Resection of Ampullary Masses: A Single Center Retrospective Study. American Journal of Gastroenterology 2020 Oct doi 10.14309/01.ajg.0000705732.82303.2e

  • Woo S, Real M, Will B, Kim E, Mandaliya R, Chalhoub W, Haddad, N. Residual and Recurrent Tumor Following Endoscopic Resection of Ampullary Neoplasms: A Single Center Retrospective Study. American Journal of Gastroenterology 2020 Oct 10.14309/01.ajg.0000705728.56784.2e

  • Villano AM, Barrak D, Jain A, Meslar E, Radkani P, Chalhoub W, Haddad N, Winslow E, Fishbein T, Hawksworth J. Robot‑assisted combined pancreatectomy/hepatectomy for metastatic pancreatic acinar cell carcinoma: case report and review of the literature. Clin J Gastroenterol. 2020 Jun 25. doi: 10.1007/s12328-020-01146-z

  • Mandaliya R, Henao Velasquez A, Mishra D, Fick C, Lewis J, Kallakury B, Chalhoub W, Haddad N. Gastric portal hyperplastic polyps: A polypoid variant of GAVE in portal hypertension. Gastrointestinal Endoscopy Jun 2019 doi 10.1016/j.gie.2019.03.808

  • Quadri HS, Smaglo BG, Morales SJ, Phillips AC, Martin AD, Chalhoub WM, Haddad NG, Unger KR, Levy AD, Al-Refaie WB. Gastric Adenocarcinoma: A Multimodal Approach. Front Surg. 2017 Aug 3;4:42. doi: 10.3389/fsurg.2017.00042. eCollection 2017 PMCID: PMC5540948

  • Morales SJ, Nigam N, Chalhoub WM, Abdelaziz DI, Lewis JH, Benjamin SB. Gastric antral webs in adults: A case series characterizing their clinical presentation and management in the modern endoscopic era. World J Gastrointest Endosc. 2017 Jan 16;9(1):19-25. PMCID: PMC5215115

  • Chalhoub WM, Arumagunathan M, Sliman K, Lewis JH. Drug Induced Liver Injury (DILI): What was new in 2013? Expert Opin Drug Metab Toxicol. 2014 Jul;10(7):959-80

  • Sultan M., Karanovic D., Chalhoub W., Ajmera A., Maufa F., MD, Zeck J., Shafa S., Johnson L., Haddad N., Gastric Duplication Cyst With Elevated Amylase Level: An Unusual Presentation Mimicking Pancreatic Cystic Neoplasm. ACG Case Rep J 2015;2(2):86-88 PMCID: PMC4669991

  • Pemberton H, Sultan M, Chalhoub W, Morales S, Al-Bugeay M, Smith J, Haddad N. Lymphangioma Presents as Peripancreatic Cystic Neoplasm: The Utility of Endoscopic Ultrasound. J Clin Trials 2014, 5: 215. PMCID: PMC2442972

  • Sultan M., Chalhoub W., Gottlieb K., Marino G., Endosonographic findings in Colitis Cystica Profunda. Case report with the aid of EUS. ACG Case Rep J 2014;1(3):122–123 PMCID: PMC4435314

  • Hill E., Sultan M., Chalhoub WM., Jackson P., Mattar M.  Median Arcuate Ligament Syndrome: A Cause of Postprandial Abdominal Pain in a Patient With Ulcerative Colitis.  Journal of Medical Cases, Vol. 5, No. 6, Jun 2014 PMCID: PMC3604703

  • Chalhoub W, Sidhu H, Singhal P, Pasechnik A, Wojtera T, Maufa F, Shafa S, Ajmera A, Anderson M, Korman LY, Haddad N, Marino G. Colonoscopy Force Monitoring Detects Changes in Colonoscopy Training Model Difficulty and Model Adaptation.  Gastrointestinal Endoscopy (GIE). Volume 77, Issue 5, Page AB530, May 2013 PMCID: PMC4070603

  • Singhal P., Chalhoub WM., Sidhu H., Pasechnik A., Wojtera T., Maufa F., Shafa S., Ajmera A., Anderson M., Korman LY., Marino G., Haddad NG. Force Monitoring Using a Colon Training Simulator Demonstrates That Skill Is a Function of Effective Force Application Rather Than Force Magnitude: Studies in Experts and Trainees. Gastroenterology, Volume 144, Issue 5, Page S-570, May 2013 PMCID: PMC4405523

Ratings and reviews

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

  • Extent to which the care provider listened to you

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

  • Care provider's efforts to include you in decisions about your care

  • Concern the care provider showed for your questions or worries

  • Likelihood of recommending this care provider to others

  • Feb 21, 2024

    Felt more comfortable to go on with schedule procedure

  • Feb 21, 2024


  • Jan 31, 2024

    Absolutely NO compassion, no patinece, did not listen only yelled.