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Dr. Mark Mattar, MD
Gastroenterology* Age 48
Dr. Mark Mattar, MD

Offers telehealth

Dr. Mark Mattar, MD is a Gastroenterologist in Washington, DC.
Dr. Mark Mattar, MD

Dr. Mark Mattar, MD

Gastroenterology* Age 48
Washington, DC
Accepting new patients
22 years of experience

Offers telehealth

Dr. Mark Mattar, MD is a Gastroenterologist in Washington, DC.
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About Dr. Mark Mattar, MD

Dr. Mattar graduated from Virginia Commonwealth University School of Medicine. Dr. Mark Mattar, MD is a Gastroenterologist in Washington, DC and has 22 years experience. Dr. Mattar currently practices at MedStar Health Gastroenterology at MedStar Georgetown University Hospital and is affiliated with MedStar Georgetown University Hospital. Dr. Mattar has experience treating conditions like Crohn's Disease, Inflammatory Bowel Disease, Enteritis and Ulcerative Colitis among other conditions at varying frequencies. Dr. Mattar's office accepts new patients and telehealth appointments. Dr. Mattar is board certified in Gastroenterology and accepts multiple insurance plans.

Experience Check

Enter a condition or procedure
Crohn's Disease
Inflammatory Bowel Disease
Enteritis
Crohn's Disease
Inflammatory Bowel Disease
Enteritis
Ulcerative Colitis
Cholangitis
Nausea
  • View other providers who treat Nausea
Flexible Sigmoidoscopy
Manometry
Rigid Proctosigmoidoscopy
Anal or Rectal Pain
Abdominal Pain
Sigmoidoscopy
Chronic Gastritis
Constipation
Infectious Diarrheal Disease
Intestinal Ulcer
Duodenal Polypectomy
Noninfectious Gastroenteritis and Colitis
Intestinal Diverticulosis
Hemorrhoids
Endoscopy
Anemia
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Primary Sclerosing Cholangitis
Gastroptosis
Colonoscopy
Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy
Gastrointestinal Bleeding
Removal or Destruction of Rectal or Intestinal Tumor (incl. Colonoscopy, Proctosigmoidoscopy, Sigmoidoscopy and Control of Hemorrhage)
Colorectal Polyp
Gas-Bloat Syndrome
Diarrhea
  • View other providers who treat Diarrhea
Vitamin_Deficiency
Metabolic Dysfunction Associated Steatotic Liver Disease (MASLD)
Colon Cancer
Irritable Bowel Syndrome
Gastrointestinal Malabsorption
Malnutrition
Hepatitis B
Acute Gastritis
Alcoholic Cirrhosis
All Types of Food Poisoning
Ascites
  • View other providers who treat Ascites
Benign Neoplasm of the Digestive System
Bile Duct Obstruction
Bowel Strangulation
Celiac Disease
Chronic Anal Fissure
Colorectal Cancer
Dehydration
Diffuse Esophageal Spasm
Digestive Disorders
Duodenal Cancer
Duodenitis
Dysentery
E. coli Food Poisoning
Ehlers-Danlos Syndrome
Eosinophilic Esophagitis
Esophageal Achalasia and Cardiospasm
Esophageal Motility Disorders
Esophageal Ulcer
Familial Adenomatous Polyposis
Food Allergy
Food Poisoning
G6PD Deficiency Anemia
Gallstones
Gastrojejunal Ulcer
Hemochromatosis
Hepatitis C
Hernia
  • View other providers who treat Hernia
Hiatal Hernia
Hirschsprung's Disease
Hypokalemia
Ileus
  • View other providers who treat Ileus
Intestinal Diverticulitis
Intestinal Fistula
Intestinal Obstruction
Lactose Intolerance
Liver Damage from Alcohol
Liver Fluke
Mallory-Weiss Syndrome
Megacolon
Mesenteric Panniculitis
Non-Neonatal Jaundice
Pancreatitis
Pelvic Abscess
Peptic Ulcer
Pouchitis
Rectal Diseases
Rectal Ulcer
Reflux Esophagitis
Retroperitoneum Cancer
Salmonella Food Poisoning
Upper Digestive Tract Cancer
Viral Hepatitis
Cancer Counseling
Colon Cancer Screening
Colonoscopy With Polypectomy
Colorectal Cancer Screening
Gallbladder Scan
Hepatitis A Screening
Hepatitis B Virus Screening
Hepatitis C Virus Screening
Hepatitis Screening
Impedance Testing
Instrumental Diagnostic Evaluation for Dysphagia
Liver Function Test
Percutaneous Edoscopic Gastrostomy (PEG)
pH Probe
  • View other providers who treat pH Probe
Screening Colonoscopy
Ultrasound, Endoanal
Ultrasound, Esophageal
VAP Lipid Testing
Wireless pH Testing

Accepted Insurance Plans

* Please verify this information when scheduling an appointment.
  • Blue Preferred PPO
  • Cigna PPO
    Open Access Plus
    Cigna
  • Curative EPO
    Curative PPO Plus
    Curative PPO
  • HealthyBlue 2.0
    Blue Choice Advantage
    HealthyBlue Advantage
    CareFirst Maryland POS
  • Aetna
    Choice Plus POS II
    Select
  • National (BlueCard Basic) PPO
    National (BlueCard) PPO
  • KeyCare PPO
  • Blue Card PPO
  • MultiPlan PPO
  • First Health (Coventry Health Care) PPO

Where Dr. Mark Mattar, MD Sees Patients

What Patients Say

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Telehealth Options
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(202) 444-8541

Meet Dr. Mark Mattar, MD

Specialties*
Gastroenterology
Internal Medicine
Specialties*
  • *Sharecare does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
Common Questions and Answers
Responses are sourced directly from patients.
Does Dr. Mattar communicate via email?
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Does Dr. Mattar offer telehealth services or virtual visits?
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Does Dr. Mattar offer an online patient portal?
1 user said yes.
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Does Dr. Mattar have free onsite parking?
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Does Dr. Mattar offer weekend visits?
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Does Dr. Mattar offer evening visits?
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Does Dr. Mattar specialize in working with children or adolescents?
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Does Dr. Mattar specialize in working with seniors?
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Does Dr. Mattar specialize in couples therapy?
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Does Dr. Mattar specialize in working with LGBTQ+ community?
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Does Dr. Mattar accept insurance?
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FAQs About Dr. Mattar's Practice

Find contact information here to make an appointment.

A list of accepted insurance providers is available on the Sharecare insurance check. It is always a good idea to verify your insurance when making an appointment.

New patients are generally accepted by Dr. Mark Mattar, MD. To arrange an appointment, call the number on Dr. Mattar's profile.

Dr. Mattar frequently treats the following conditions: Crohn's Disease, Inflammatory Bowel Disease, Enteritis and Ulcerative Colitis. See more on Sharecare.

Dr. Mark Mattar, MD is affiliated with MedStar Georgetown University Hospital.

Yes, Dr. Mark Mattar, MD holds board certification in Gastroenterology.

Training & Medical Education
Medical Education
  • Virginia Commonwealth University School of Medicine
    2004
Medical Education
Board Certifications
  • Gastroenterology
Board Certifications
What’s a board certification and why is it important that my provider has one?

A board certification represents a provider’s dedication to ongoing training in one or more specialties, including the completion of intensive exams. While not all specialties have board certifications, if your provider does have one they’ve taken the extra step to master their specialty and to keep up with the latest advancements in their field.
Internship
  • UCLA Olive View Program
    2005
Internship
Fellowship Hospital
  • Georgetown University Hospital
    2010
Fellowship Hospital

Hospitals Where Dr. Mark Mattar, MD Practices

  • MedStar Georgetown University Hospital

    3800 Reservoir Rd NW, Washington, DC

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