Walid Mounir Chalhoub, MD| Gastroenterology | MedStar Health
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
- Colonic Polyps
- Colonoscopy
- Constipation
- Gastrointestinal Bleeding
- Helicobacter Pylori
- Postprandial Diarrhea
- Rectal Pain
- Stomach Pain
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
- Barrett's Esophagus
- Benign Neoplasm Of Colon
- Bile Duct Mass
- Biliary Tract Disease
- Bleeding Hemorrhoids
- Blood In Stool
- Bright Red Blood Per Rectum
- Choking Sensation
- Cholangitis
- Cholecystitis
- Cholelithiasis
- Cholestasis
- Chronic Abdominal Pain
- Chronic Diarrhea
- Chronic Pancreatitis
- Clostridium Difficile
- Colic
- Colitis
- Collagenous Colitis
- Colon Stricture
- Colonic Inertia
- Colonic Polyps
- Colorectal Malignancy
- Constipation
- Digestive Disorders
- 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
- Gastroenteritis
- Gastrointestinal (GI) Cancer
- Gastrointestinal (GI) Stromal Tumors
- Gastrointestinal Amyloid
- Gastrointestinal Bleeding
- Gastrojejunal Ulcer
- Gluten Sensitivity
- Helicobacter Pylori
- Hematemesis
- Hemorrhage Of Gastrointestinal Tract, Unspecified
- Hepatitis
- Hepatomegaly
- Hiatal Hernia
- Ileitis
- 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
- 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 Intestine Cancer
- Small Intestine Disease
- Steatorrhea
- Stomach Cancer
- Stomach Cramps
- Stomach Disorders
- Stomach Pain
- Swallowing Problem
- Toxic Liver Injury
- Ulcerative Proctitis
- Vomiting
- Weight Loss
- Whipple's Disease
- Wilson's Disease
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
- Endoscopy
- 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
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.
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List of insurance plans we accept
- Aetna Medicare Advantage HMO & PPO Plans
- Innovation Health: Open POS Plus
- Innovation Health: Open POS II
- Aetna Managed Choice Open Access (POS)
- Aetna Choice POS & Choice POS II
- Innovation Health: POS Plus
- Aetna Managed Choice (POS)
- Innovation Health: POS
- Aetna Open HMO/Open HMO Option/Open EPO Plus
- Aetna HMO-Open Access/Select OA
- Aetna HealthFund/Health Network Option OA
- Innovation Health: HMO & EPO Plus
- Aetna Select HMO/HealthFund/Health Network
- Aetna HMO
- Innovation Health: Open Network Only Plus
- Aetna Elect Choice/ Open Access (POS)
- Innovation Health: Network Only Plus
- Aetna Elect Choice/ EPO (Aetna Health Fund)
- Employee Health Plan (EHP)
- Cigna TotalCare (HMO D-SNP)
- Cigna Preferred Medicare
- Cigna Alliance Medicare (HMO) |
- Cigna Achieve Medicare (HMO C-SNP)
- Veterans Affairs Community Care Network (VA CCN)
- United Medicare Advantage DSNP District of Columbia
- United Student Resources
- United Select Plus (POS)
- United Select HMO - EPO/NPP
- United Options (PPO) (includes Empire PPO)
- United Golden Rule
- United GEHA (for all other states) Compass Rose
- D-SNP)
- I-SNP
- United Nursing Home Plan (C-SNP
- United Erickson Advantage Plans
- United Choice Plus
- United Choice
- United Mamsi Life & Health
- United Core Essential (HMO)
- United Navigate
- MedStar Family Choice DC Healthy Families
- MedStar Family Choice DC Healthcare Alliance
- United MD IPA Preferred (POS)
- United MD IPA (HMO)
- Kaiser Permanente Signature-Added Choice
- Kaiser Signature
- Kaiser HMO Plus and DHMO Plus Member
- Kaiser Select-Added Choice
- Kaiser Select
- Kaiser Medicare Plus
- Kaiser Medicare Advantage Signature and Select
- Kaiser Flexible Choice
- HumanaChoice PPO
- HumanaChoice Honor’s plan PPO
- Health Services for Children with Special Needs (HSCSN)
- Cigna True Choice Plus Medicare (PPO)
- Cigna True Choice Medicare (PPO)
- Cigna POS/Network POS
- Cigna Indemnity
- Cigna POS Open Access & Open Access Plus
- Cigna Network Open Access
- Cigna HMO Open Access
- Cigna PPO and PPO Plus
- Cigna EPO
- Cigna Choice Fund PPO
- Beech Street PPO
- Innovation Health: Indemnity
- Aetna Traditional Choice (PPO)
- Aetna Student Health Insurance
- Aetna Signature Administrator PPO/TPA
- Aetna Quality Point of Service (POS)
- Innovation Health: PPO
- Aetna Open Choice (PPO)
- Cigna HMO & Network (HMO)
- WellPoint Maryland - Maryland Health Choice
- WellPoint Maryland
- Virginia Premier
- Veterans Affairs Community Care Network
- UnitedHealthcare Individual Exchange Plans
- United Community Plan - Maryland Health Choice Program
- Uniformed Services Family Health Plan (USFHP)
- Private Health Care Systems (PHCS) (PPO)
- Priority Partners - Maryland Health Choice
- Police and Fire Clinic
- United Optimum Choice Preferred (POS) & OCI Direct (HMO)
- United Optimum Choice
- United Group Medicare Advantage Plans
- United AARP Medicare Complete
- Traditional Medicare Fee for Service
- Medicaid - Virginia
- Medicaid - Maryland
- Medicaid - District of Columbia
- Tricare for Life East
- Tricare Reserve Select
- Tricare East Select
- Tricare East Prime
- Maryland Point of Service Plan (MPOS)
- HealthyBlue PPO
- Federal Employee Program (Std/Basic PPO/Blue Focus)
- CareFirst NASCO
- CareFirst MedStar Select PPO
- CareFirst MedStar PPO
- CareFirst Maryland Indemnity or PPO
- CareFirst Group Medicare Advantage prescription drug benefit (PPO)
- CareFirst Group Medicare Advantage
- CareFirst BC/BS Advantage Core/Enhanced
- CareFirst Blue Card Program (Out-of-area BCBS plans)
- CareFirst Administrators
- CareFirst (NCA) Indemnity
- Carefirst BlueChoice Opt Out Plus Open Access (POS)
- Carefirst Healthy Blue (HMO/POS)
- Carefirst BlueChoice Opt Out Open Access
- Carefirst BlueChoice Open Access
- Carefirst BlueChoice HMO
- Carefirst EPO
- Carefirst Blue Preferred PPO
- Coventry Health Care National Network PPO
- Coventry of Delaware HMO/PPO
- First Health PPO
- MedStar Family Choice - Maryland Health Choice
- Coventry Health Care of Virginia
- Great-West Healthcare POS/CIGNA
Videos
Education
Fellowship: Georgetown University Hospital (2015)
Residency: Icahn School Of Medicine At Mount Sinai (2011)
Graduate: University of Balamand (2005)
Awards
- Washingtonian Top Docs for 2021
- Chief Resident in Internal Medicine, Mount Sinai School of Medicine Elmhurst Program
- Three time SPIRIT Award Recipient
Hospital affiliations
News and publications
Colorectal Cancer Awareness - NBC
Doc Saves Cop: Police Chief Highlights the Importance of Colonoscopies
Video: Management of Esophageal Obstruction, Pain, and Bleeding and Palliative Therapy of Dysphagia During Definitive Therapy
- 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