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
- Bleeding Ulcer Treatment
- Colonoscopy With Biopsy
- Endometriosis
- Endoscopic Retrograde Cholangiopancreatography (ERCP)
- Enteroscopy
- Enteroscopy With Bleeding Control
- Gastroesophageal Reflux Disease (GERD) In Children
- H. Pylori Treatment
- Hysteroscopic Polyp Resection
- Intestinal Stenosis
- Lower Gi Endoscopy
- Sigmoidoscopy With Biopsy
- Upper Gi Endoscopy
Conditions and procedures
Conditions I treat
- Abdominal Pain
- Abnormal Body Structure Imaging
- Abnormal Digestive Findings
- Abnormal Plasma Proteins
- Abnormal Stool
- Achalasia
- Acute Cholecystitis
- Acute Pancreatitis
- Alimentary Tract Foreign Body
- Anal Cancer
- Anus And Rectum Diseases
- Aphagia And Dysphagia
- Appendiceal Cancer
- Ascites
- Bacterial Agents
- Barrett's Esophagus
- Benign Neoplasm Of Colon, Rectum, Anus And Anal Canal
- Benign Neoplasm Of Digestive System
- Benign Tumor
- Bile Duct Cancer
- Biliary Tract Disease
- Bowel Obstruction
- Cancer Of The Appendix
- Candidiasis
- Carcinoma In Situ Of Digestive Organs
- Celiac Disease
- Choledocholithiasis
- Chronic Constipation
- Colitis
- Colon Cancer
- Colon Disease
- Colonic Diverticulosis
- Colonic Polyps
- Colonoscopy
- Colorectal Malignancy
- Complications Of Cardiac And Vascular Prosthetic Devices
- Congenital Malformations Of Digestive System
- Congenital Malformations Of Esophagus
- Congenital Malformations Of Gallbladder, Bile Ducts And Liver
- Congenital Malformations Of Intestine
- Congenital Malformations Of Peripheral Vascular System
- Congenital Malformations Of Upper Alimentary Tract
- Constipation
- Crohn's Disease
- Crohn's Disease [Regional Enteritis]
- Cutaneous Abscess
- Diaphragmatic Hernia
- Digestive System Complications
- Digestive System Diseases
- Digestive System Symptoms
- Diseases Of Esophagus
- Diseases Of Stomach And Duodenum
- Disorders Of Mineral Metabolism
- Duodenal Ulcer
- Duodenitis
- Dysphagia
- Endometriosis
- Esophageal Cancer
- Esophageal Hernia
- Esophageal Stricture
- Esophagitis
- External Hemorrhoids
- Family History Of Malignant Neoplasm
- Family History Of Specific Disorders
- Flatulence
- Functional Dyspepsia
- Functional Intestinal Disorders
- Gallbladder Cancer
- Gallbladder Disease
- Gallstones
- Gas And Bloating
- Gastric Cancer
- Gastric Varices
- Gastritis
- Gastroenteritis
- Gastroesophageal Reflux Disease (GERD) In Children
- Gastrointestinal Bleeding
- Gastrointestinal Stromal Tumor (GIST)
- General Symptoms
- Genetic Susceptibility To Disease
- H. Pylori Infection
- Helicobacter Pylori
- Hemangioma
- Hemorrhoids
- Hemorrhoids And Perianal Venous Thrombosis
- Hepatitis
- Hepatomegaly
- Hepatomegaly And Splenomegaly
- Intestinal Infections
- Intestinal Stenosis
- Irritable Bowel Syndrome
- Jaundice
- Liver Cancer
- Liver Cirrhosis
- Liver Fibrosis
- Long Term Drug Therapy
- Malabsorption
- Malignant Neuroendocrine Tumors
- Myocarditis
- Nausea
- Nonalcoholic Fatty Liver Disease (NAFLD)
- Noninfective Gastroenteritis
- Ovarian Cysts And Benign Neoplasms
- Pancreas Cancer
- Pancreatic Diseases
- Paralytic Ileus And Intestinal Obstruction
- Perianal Fistula
- Perianal Itching
- Perianal Pain
- Peripheral Vascular Disease Of The Intestines
- Personal History Of Diseases And Conditions
- Polycystic Liver Disease
- Postprandial Diarrhea
- Rectal Cancer
- Regional Enteritis
- Small Intestine Cancer
- Small Intestine Diseases
- Spinal Stenosis
- Splenectomy
- Stomach Cancer
- Throat Pain
- Ulcerative Colitis
- Vascular Disorders Of Intestine
- Viral Hepatitis
Procedures I perform
- Abdominal Ultrasound
- Anal Fistula Treatment
- Bladder Inspection
- Bladder Stone Removal
- Bleeding Ulcer Treatment
- Cecum Excision
- Celiac Plexus Block
- Colonoscopy
- Colonoscopy With Biopsy
- Colonoscopy With Injection
- Common Hepatic Duct Extraction
- Cystic Duct Extraction
- Diarrhea Management
- Diarrhea Treatment
- Dilation Of Common Hepatic Duct
- Dilation Of Common Hepatic Duct With Stent
- Dilation Of Esophagus
- Duodenum Destruction
- Duodenum Excision
- Endoscopic Biliary Ductal System Catheterization
- Endoscopic Diagnostic Pancreas Drainage
- Endoscopic Mucosal Resection
- Endoscopic Pancreatic Ductal System Catheterization
- Endoscopic Retrograde Cholangiopancreatography
- Endoscopic Retrograde Cholangiopancreatography (ERCP)
- Endoscopic Retrograde Cholangiopancreatography With Biopsy
- Endoscopic Retrograde Cholangiopancreatography With Calculi Destruction
- Endoscopic Retrograde Cholangiopancreatography With Papilla Cannulation
- Endoscopic Stomach Feeding Device Insertion
- Enteroscopy
- Enteroscopy With Biopsy
- Enteroscopy With Bleeding Control
- Esophageal Dilation
- Esophagus Excision
- Excision Of Ampulla Of Vater
- Excision Of Cecum
- Excision Of Duodenum
- Excision Of Esophagus
- Excision Of Large Intestine
- Excision Of Pancreas
- Excision Of Stomach
- Excision Of Stomach Pylorus
- Extirpation Of Common Hepatic Duct
- Extraction Of Common Hepatic Duct
- Extraction Of Pancreas
- Flexible Colonoscopy With Biopsy
- Flexible Sigmoidoscopy With Biopsy
- Fluoroscopy Of Bile Ducts
- Fluoroscopy Of Stomach
- Gastric Debridement
- Gastrointestinal Motility Study
- H. Pylori Treatment
- Hemorrhage Control
- Hepatobiliary Duct Inspection
- Hysteroscopic Polyp Resection
- Insertion Of Duodenostomy Tube
- Liver Imaging
- Lower Esophagus Excision
- Lower Gi Endoscopy
- Lower Gi Therapeutic Substance Introduction
- Muscle Injection
- Percutaneous Cholecystostomy
- Rectal Excision
- Rectal Pain Treatment
- Rectal Stricture Dilation
- Right Hepatic Duct Extraction
- Sigmoid Colectomy
- Sigmoidoscopy With Biopsy
- Small Intestine Repair
- Stent Placement
- Stomach Excision
- Stomach Pain Treatment
- Transduodenal Sphincterotomy
- Ultrasonography Of Gastrointestinal Tract
- Unlisted Biliary Tract Procedure
- Upper Esophagus Dilation, Endoscopic
- Upper Gi Endoscopy
- Urea Breath Test
- Urinary Incontinence Treatment
- Urologic Imaging
- Venous Access Device Removal
- Venous Ulcer Treatment
Practice locations
Distance from Change LocationEnter your Location
25500 Point Lookout Rd Outpatient Pavilion 2nd Fl Leonardtown, MD, 20650
240-434-4100Fax 240-434-4022
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
- IH-Open POS II
- Anthem BCBS of VA Key Care POS/PPO/Indemnity
- Private Fee-for-Service Plans (PFFS)
- United Healthcare Choice Cardiac Global
- BCBS Out-of-State Medicare Plans (Blue Advantage)
- Fee-for-Service (FFS) District of Columbia, Maryland and Virginia Medicaid
- IH-Open Network Only Plus
- Coventry of Delaware HMO/PPO
- Anthem BCBS of VA HealthKeepers (HMO)
- BlueChoice Open Access
- CareFirst NASCO
- Kaiser Permanente Flexible Choice 3-tier POS
- BCBS of Michigan (BCN Advantage,Security Blue, Freedom, Medicare PLUS Blue Group PPO)
- Employee Health Plan
- United Healthcare Community Plan - VA Medicaid MCO
- Aetna Medicare Advantage HMO & PPO Plans
- Beech Street PPO
- Lasso Healthcare - Medicare Medical Savings Account
- First Health PPO
- CIGNA HMO Open Access
- Options PPO Cardiac Global
- Priority Partners - Maryland Health Choice
- HumanaChoice PPO
- Kaiser Permanente Medicare Plus
- M.D. IPA Preferred (POS)
- Cigna Preferred Medicare (HMO)
- CareFirst Blue Preferred PPO
- Humana Medicare Advantage - HMO Open Access
- TriWest Healthcare Alliance
- Amerigroup DC Healthy Families
- Health Services for Children with Special Needs
- MedStar Family Choice - Maryland Health Choice
- Aetna Medicare Advantage PFFS Plan
- Amerigroup DC Alliance
- Kaiser Permanente Select Cardiac Global
- CareFirst Administrators
- IH-POS
- MedStar Family Choice DC Healthcare Alliance
- UnitedHealthcare Individual Exchange Plans
- Kaiser Maryland Medicaid MCO
- CareFirst (NCA) Indemnity
- Navigate
- CareFirst Community Health Plan of MD
- CareFirst Group Medicare Advantage
- Aetna Classic 5000
- CareFirst Maryland Indemnity or PPO
- Kaiser Permanente Select
- United Healthcare Choice Plus Cardiac Global
- Kaiser Permanente Flexible Choice POS Cardiac Global
- Cigna True Choice Medicare (PPO)
- UHC Group Medicare Advantage Plans (HMO, POS, PPO)
- Aetna Student Health Insurance
- CareFirst BlueCross BlueShield Advantage Core/Enhanced
- MultiPlan, Inc
- UnitedHealthcare and AARP Medicare Complete Plans
- Choice POS II
- AMERIVANTAGE/Amerigroup Community Care
- Anthem BCBS of VA HealthKeepers Plus
- Kaiser Permanente Signature - Added Choice
- AmeriHealth Caritas DC Healthy Families
- IH-Indemnity
- MedStar Family Choice - Maryland Health Choice
- Police and Fire Clinic
- Choice POS
- Coventry Health Care of Virginia
- UnitedHealthcare Medicare Advantage DSNP District of Columbia
- DC/MD SHOP QHP Small Business Plans
- Medicare Direct
- CIGNA Connect EPO
- Core Essential (HMO)
- HumanaChoice Honor's plan PPO
- CareFirst EPO
- Medicare FFS
- Aetna Managed Choice Open Access (POS)
- TRICARE East Select
- NYC Medicare Advantage Plus
- Anthem BCBS of VA HealthKeepers (POS & POS OA)
- OCI Direct (HMO)
- Anthem BCBS Medi Blue SNP
- Cigna True Choice Plus Medicare (PPO)
- Aetna Signature Administrator PPO/TPA
- Network OA
- IH-PPO
- IH-Open POS Plus
- Aetna Better Health of VA
- Healthy Blue (HMO, POS)
- United Student Resources
- Optima Family Care MCO - VA Medicaid MCO
- United Healthcare Choice Plus
- Advantra Platinum (PPO)
- Aetna Better Health of MD
- CareFirst Group Medicare Advantage prescription drug benefit (PPO)
- Aetna Advantage 6350PD
- Kaiser Permanente Signature
- MedStar Family Choice DC Healthy Families
- Private Health Care Systems (PPO)
- Aetna Advantage 6350
- Kaiser Permaenete Signature - Added Choice Cardiac Global
- TRICARE East Prime
- Medicare Advantage - Advantra Value (PPO)
- CIGNA PPO Plus
- M.D. IPA (HMO)
- HighMark
- United Healthcare Choice
- Johns Hopkins Advantage MD PPO
- IH-POS Plus
- CareFirst FEP Blue Focus
- CareFirst MedStar PPO
- Aetna Classic 3500
- Aetna Elect Choice/ Open Access (POS)
- CareFirst Dual Prime HMO-SNP
- CIGNA POS/Network POS
- Alterwood Advanatge HMO & DSNP Plans
- POS OA
- Aetna Elect Choice/ EPO (Aetna Health Fund)
- Kaiser Permanente Medicare Advantage Signature and Select
- Veterans Affairs Community Care Network
- Humana Gold Plus HMO
- Aetna Advantage 5750
- Anthem Federal Employee Program Basic
- HUMANA/Choice Care Medicare Plans (Choice, Gold Choice)
- Aetna VA Exchange
- CIGNA EPO
- IH-Network Only Plus
- Choice Care Network/HUMANA (PPO)
- MD IPA (HMO) & MD IPA Preferred Cardiac Global
- Tricare Reserve Select
- Aetna Quality Point of Service (POS)
- Cigna Achieve Medicare (HMO C-SNP)
- Aetna HMO-Open Access/Select OA/HealthFund/Health Network Option OA
- Choice Fund PPO
- CIGNA Indemnity
- United Medicare Private Fee-for-Service (PFFS) plans
- CIGNA SureFit (HMO)
- Coventry Health Care National Network PPO
- Johns Hopkins Advantage MD HMO
- Aetna Premier 200PD
- Anthem BCBS Medi Blue Plus
- Kaiser Permanente HMO Plus and DHMO Plus Member
- Aetna Open Choice (PPO)
- Fee-for-Service (FFS) District of Columbia, Maryland and Virginia Medicaid
- Jai Medical Systems - Maryland Health Choice
- Aetna HMO
- Optimum Choice & Optimum Choice Preferred (POS) Cardiac Global
- MedStar Family Choice DC Healthcare Alliance
- CIGNA PPO
- Mamsi Life & Health (Indem./PPO)
- Maryland Physicians Care MCO
- HealthyBlue PPO
- Kaiser Permanente Select - Added Choice
- Choice POS II Open Access
- Anthem BCBS Medi Blue Dual Adv
- Blue Choice Advantage
- CareFirst Blue Choice Opt Out Open Access
- Uniformed Services Family Health Plan
- IH-HMO
- CareFirst Maryland Point of Service Plan
- Mamsi Life & Health (Indem./PPO) Cardiac Global
- Optimum Choice
- UnitedHealthcare Medicare Adv. Special Needs Plans
- United Healthcare Select HMO-EPO/NPP Cardiac Global
- IH-Open EPO Plus
- Cigna Alliance Medicare (HMO)
- United Healthcare Options (PPO)
- CareFirst MedStar Select PPO
- CareFirst Blue Choice Opt Out Plus Open Access (POS)
- Anthem Federal Employee Program Standard
- IH-EPO Plus
- Aetna Managed Choice (POS)
- Magellan Complete Care of VA - VA Medicaid MCO
- Great-West Healthcare POS/CIGNA
- Aetna Worker's Compensation Network
- IH-Open HMO
- Select HMO/HealthFund/Health Network
- UnitedHealthcare Individual Exchange Plans
- United Healthcare Select Plus (POS)
- Aetna Classic 5000PD
- WellPoint Maryland - Maryland Health Choice
- Aetna Traditional Choice (PPO)
- AmeriHealth Caritas DC Healthcare Alliance
- OA Plus
- CIGNA HMO & Network (HMO)
- Sentara Health
- UHC Passport
- United HealthCare Community Plan - Maryland Health Choice Program
- Cigna TotalCare (HMO D-SNP)
- First Health PPO
- United Healthcare Navigate Cardiac Global
- CareFirst BlueChoice HMO
- Aetna Basic
- CareFirst Federal Employee Program (Std. & Basic PPO)
- TRICARE for Life East
- Mamsi Life & Health (Indem./PPO)
- Optimum Choice Preferred (POS)
- Humana Medicare Advantage - PPO
- CareFirst Blue Card Program
- Johns Hopkins Advantage MD PLUS PPO
- Geisinger Medicare Advantage
- IH-Open HMO Option
- United Healthcare Select HMO - EPO/NPP
- Erickson Advantage Plans
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