Walid Chalhoub, MD| Gastroenterology | MedStar Health

Walid Chalhoub, MD
Provider is directly employed by MedStar Health

4.7 out of 5 (207 reviews)

Specialities: Gastroenterology

Languages: Spanish, Arabic, French, English

877-303-1462

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 Bloating
  • Abdominal Distention
  • Abdominal Pain
  • Abnormal Bowel Movement
  • Abnormal Stool
  • Altered Bowel Habits
  • Anal Fissure
  • Bleeding Hemorrhoids
  • Blood In Stool
  • Chronic Diarrhea
  • Colonoscopy
  • Constipation
  • Diarrhea
  • Dysphagia
  • Epigastric Pain
  • Gastroesophageal Reflux Disease
  • Gastrointestinal Bleeding
  • Helicobacter Pylori
  • Hemorrhoids
  • Melena
  • Nausea
  • Postprandial Diarrhea
  • Rectal Bleeding
  • Rectal Pain
  • Stomach Cramps
  • Stomach Pain
  • Swallowing Problem
  • Vomiting
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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 Carcinoma In Situ
  • Anal Fissure
  • Anal Fistula
  • Anal Itching
  • Anal Pain
  • Anal Polyp
  • Anal Spasm
  • Anal Ulcer
  • Anemia
  • Annular Pancreas
  • Anorectal Disease
  • Anorexia
  • Autoimmune Hepatitis
  • Barrett's Esophagus
  • Benign Neoplasm Of Colon
  • 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
  • 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 Disease
  • Gallbladder Polyp
  • Gastric Ulcer
  • Gastritis
  • Gastroenteritis
  • Gastroesophageal Reflux Disease
  • 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 Cancer
  • 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 Hemorrhage
  • Rectal Pain
  • Rectal Polyp
  • Rectal Prolapse
  • Right Lower Quadrant Pain
  • Right Upper Quadrant Pain
  • Short Bowel Syndrome
  • Small Bowel Disease
  • 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
  • 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 (PERCUTANEOUS ENDOSCOPIC GASTROSTOMY)
  • 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

3800 Reservoir Road Northwest
Washington, DC, 20007

202-444-8541

Fax 877-303-1462

Get Directions

miles away

Fax 877-303-1462

7501 Surratts Road
POB Ste 208
Clinton, MD, 20735

301-877-4599

Fax 301-877-5637

Get Directions

miles away

Fax 301-877-5637

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 USAccess (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 Federal Employee Program (Std. & Basic PPO)
    • 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 Standard
    • Tricare Extra (Indemnity)
    • Tricare for Life (Medicare Supplemental Plan)
    • MedStar Family Choice - Maryland Health Choice
    • MedStar Select (MedStar Associates' Plan)
    • MedStar Medicare Choice
    • 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
    • Private Health Care Systems (PHCS) (PPO)
    • United Healthcare Options (PPO) (includes Empire PPO, GEHA, Compass Rose)
    • OneNet PPO, Inc.
    • United Healthcare Choice
    • United Healthcare Core Essential (HMO)
    • Optimum Choice
    • United Healthcare Navigate
    • United Healthcare Compass (HMO)
    • 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
    • Blue Choice Advantage & Healthy Blue (HMO, POS)
    • 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

Education

Board Certification: American Board of Internal Medicine, Internal Medicine

Fellowship Program: MedStar Georgetown University Hospital (2015)

Residency Program: Mount Sinai Medical Center (2011)

Medical School: Balamand Medical School (2005)

Awards

  • 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

  • Provider explained things understandably

    4.7
  • Provider listened carefully

    4.7
  • Provider gave easy to understand instructions

    4.6
  • Provider knew medical history

    4.5
  • Provider showed respect

    4.7
  • Provider spent enough time with patient

    4.6
  • Mar 23, 2022

    The Doctor was AMAZING!

  • Dec 22, 2021

    I'm not sure if he's the doctor for me.

  • Oct 6, 2021

    My first visit Dr. Chalhoub was not available. One of his associates & nurse practitioner cared for me. Cannot recommend at this time.