Ghassan Abdullah Alzayer, MD| Gastroenterology | MedStar Health

Ghassan Abdullah Alzayer, MD
Provider is directly employed by MedStar Health

Specialities: Gastroenterology

Languages: English

About me

Ghassan Alzayer, MD, is an attending gastroenterologist at MedStar Washington Hospital Center and an Assistant Professor of Medicine at Georgetown University School of Medicine.

Dr. Alzayer sees patients for all conditions of the gastrointestinal tract and has a special interest in esophageal diseases/disorders, including GERD (acid reflux), Barrett’s esophagus, eosinophilic esophagitis, esophageal strictures (narrowing), and motility disorders.

He employs a variety of diagnostic and treatment procedures including endoscopy, colonoscopy, endoscopic dilation, PEG tube (feeding tube) placement, capsule endoscopy, esophageal PH testing, and high-resolution manometry.

Dr. Alzayer works with each patient to understand the root cause of their symptoms and to make an accurate diagnosis. When appropriate, he employs conservative treatment options, like lifestyle changes and pharmacological treatments, to help improve symptoms, before recommending more invasive treatment options. Dr. Alzayer is highly experienced in the use of  colonoscopy for the removal of polyps, including advanced polyps. 

Dr. Alzayer received his medical degree from University of Dammam College of Medicine in Saudi Arabia, where he served as a resident, teaching assistant, and clinical instructor in their Department of Internal Medicine. He then completed his residency training in internal medicine at Baystate Medical Center/University of Massachusetts, where he served as Chief Resident and had various clinical, leadership, and teaching roles for training residents, and worked along the faculty in internal medicine residency program improvement. Finally, he completed a gastroenterology fellowship at Medstar Georgetown University Hospital before joining MedStar Washington Hospital Center. He is a member of the American Society for Gastrointestinal Endoscopy, the American Gastrointestinal Association, and the American College of Gastroenterology.

Philosophy of Care

“My approach to treatment can be described as ‘whole patient care.’ The care I provide is patient-focused and relies on the time I take to listen to my patients in order to understand the root cause of their symptoms. By listening to the concerns of my patients, I can provide a treatment plan that is tailored to their specific needs and that also aligns with their treatment goals.”

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 Pancreatitis
  • Alcoholic Liver Disease
  • Allergic Esophagitis
  • Altered Bowel Habits
  • Anal Fissure
  • Anal Fistula
  • Anal Itching
  • Anal Pain
  • Anal Spasm
  • Annular Pancreas
  • Anorexia
  • Autoimmune Enteropathy
  • Autoimmune Hepatitis
  • Barrett's Esophagus
  • Benign Neoplasm Of Colon
  • Biliary Tract Disease
  • Bleeding Hemorrhoids
  • Blood In Stool
  • Bowel Dysmotility
  • Bright Red Blood Per Rectum
  • Celiac Disease
  • Choking Sensation
  • Cholangitis
  • Cholecystitis
  • Cholelithiasis
  • Cholestasis
  • Chronic Abdominal Pain
  • Chronic Diarrhea
  • Chronic Pancreatitis
  • Cirrhosis
  • Clostridium Difficile
  • Colitis
  • Collagenous Colitis
  • Colonic Inertia
  • Colonic Polyps
  • Constipation
  • Crohn's Disease
  • Cyclic Vomiting Syndrome
  • 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
  • Eructation
  • Esophageal Cancer
  • Esophageal Disease
  • Esophageal Diverticulum
  • Esophageal Mass
  • Esophageal Motility Disorders
  • 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
  • Gastroparesis
  • Giardiasis
  • Gluten Sensitivity
  • Helicobacter Pylori
  • Hematemesis
  • Hemochromatosis
  • 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
  • Obstipation
  • Obstructive Jaundice
  • Odynophagia
  • Ogilvie Syndrome
  • 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 Cirrhosis
  • Proctitis
  • Rectal Bleeding
  • Rectal Pain
  • Right Lower Quadrant Pain
  • Right Upper Quadrant Pain
  • Short Bowel Syndrome
  • Small Bowel Disease
  • Steatorrhea
  • Stomach Cramps
  • Stomach Disorders
  • Stomach Pain
  • Swallowing Problem
  • Toxic Liver Injury
  • Ulcerative Colitis
  • Ulcerative Proctitis
  • Vomiting
  • Whipple's Disease
  • Wilson's Disease
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Procedures I perform

  • Bravo PH Test
  • Colon Polypectomy
  • Colonoscopy
  • Esophagogastroduodenoscopy (EGD)
  • Feeding Tube Management
  • Gastrointestinal (GI) Cancer Screening
  • Gastroscopy
  • Peg (PERCUTANEOUS ENDOSCOPIC GASTROSTOMY)
  • Proctosigmoidoscopy
  • Sigmoidoscopy
  • Single Balloon Enteroscopy
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Practice locations

Distance from Change LocationEnter your Location

18109 Prince Philip Drive
Suite B100
Olney, MD, 20832

301-774-8962

Fax 202-877-3062

Get Directions

miles away

Fax 202-877-3062

106 Irving Street Northwest
POB Ste 205 South Tower
Washington, DC, 20010

202-877-7108

Fax 202-877-3062

Get Directions

miles away

Fax 202-877-3062

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

Board Certification: American Board of Internal Medicine, Gastroenterology

Fellowship Program: MedStar Georgetown University Hospital (2021)

Residency Program: Baystate Medical Center (2018)

Medical School: University of Dammam College of Medicine (2010)