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Dr. Mark Mattar, MD

Gastroenterology* Age 46
Dr. Mark Mattar, MD
3.7 (18 Ratings)

Offers telehealth

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Dr. Mark Mattar, MD is a Gastroenterology Specialist in Washington, DC.
Dr. Mark Mattar, MD
3.7 (18 Ratings)
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Dr. Mark Mattar, MD

Gastroenterology* Age 46
Washington, DC
Accepting new patients
20 years of experience

Offers telehealth

Dr. Mark Mattar, MD is a Gastroenterology Specialist in Washington, DC.

About

Dr. Mark Mattar, MD is a Gastroenterology Specialist in Washington, DC and has 20 years experience. They graduated from Virginia Commonwealth University School of Medicine in 2004 and completed a residency at UCLA Olive View Program.They currently practice at Dr Margaret B Marshall - MD and are affiliated with MedStar Georgetown University Hospital. Dr. Mattar has experience treating conditions like Inflammatory Bowel Disease, Infectious Diarrheal Disease and Enteritis among other conditions at varying frequencies. At present, Dr. Mattar received an average rating of 3.7/5 from patients and has been reviewed 18 times. Their 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
Inflammatory Bowel Disease
Infectious Diarrheal Disease
Enteritis
Inflammatory Bowel Disease
Infectious Diarrheal Disease
Enteritis
Abdominal Pain
Anal or Rectal Pain
Anemia
  • View other providers who treat Anemia
Cholangitis
Colorectal Polyp
Constipation
Crohn's Disease
Diarrhea
  • View other providers who treat Diarrhea
Duodenitis
Gastrointestinal Bleeding
Hemorrhoids
Intestinal Diverticulosis
Intestinal Ulcer
Irritable Bowel Syndrome
Noninfectious Gastroenteritis and Colitis
Primary Sclerosing Cholangitis
Ulcerative Colitis
Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy
Duodenal Polypectomy
Endoscopy (Esophagus, Stomach, Small Intestine)
ERCP (Endoscopic Retrograde Cholangiopancreatography)
Flexible Sigmoidoscopy
Manometry
Removal or Destruction of Rectal or Intestinal Tumor (incl. Colonoscopy, Proctosigmoidoscopy, Sigmoidoscopy and Control of Hemorrhage)
Rigid Proctosigmoidoscopy
Benign Neoplasm of the Digestive System
Bile Duct Obstruction
Celiac Disease
Chronic Anal Fissure
Chronic Gastritis
Colon Cancer
Colorectal Cancer
Congenital Anomaly Intestine
Dehydration
Diffuse Esophageal Spasm
Digestive Disorders
Diverticulitis
Diverticulosis
Dysentery
Eosinophilic Esophagitis
Esophageal Motility Disorders
Esophageal Ulcer
Familial Adenomatous Polyposis
Food Allergy
Gallstones
Gas-Bloat Syndrome
Gastrointestinal Malabsorption
Gastroptosis
Hemochromatosis
Hepatitis B
Hepatitis C
Hepatorenal Syndrome
Hernia
  • View other providers who treat Hernia
Hiatal Hernia
Ileus
  • View other providers who treat Ileus
Intestinal Diverticulitis
Intestinal Fistula
Intestinal Obstruction
Lactose Intolerance
Liver Damage from Alcohol
Liver Fluke
Mallory-Weiss Syndrome
Malnutrition
Megacolon
Mesenteric Panniculitis
Nausea
  • View other providers who treat Nausea
Non-Alcoholic Fatty Liver Disease
Non-Neonatal Jaundice
Pancreatitis
Pelvic Abscess
Peptic Ulcer
Pouchitis
Pyloric Stenosis
Rectal Diseases
Rectal Ulcer
Reflux Esophagitis
Retroperitoneum Cancer
Viral Hepatitis
Vitamin_Deficiency
Cancer Counseling
Colon Cancer Screening
Colonoscopy
Colonoscopy With Polypectomy
Colorectal Cancer Screening
Endoscopy
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
VAP Lipid Testing
Wireless pH Testing

Insurance Accepted

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

Locations

  1. 1 Division of Gatroenterology
    3800 Reservoir Rd NW, Washington, DC 20007

Patient Satisfaction

Likelihood to recommend Dr. Mattar
3.7
Based on 18 Reviews
5 Stars (11)
4 Stars (1)
3 Stars (0)
2 Stars (1)
1 Star (5)

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How likely are you to recommend Dr. Mattar?

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Patient Reviews
May 15, 2024
I am a repeat colonoscopy patient of Dr Mark Mattar. He and his support staff have made what can be a very unpleasant experience almost pleasant, which is hard to do with colonoscopy. Everyone I dealt with was helpful. Dr Mattar listened to me and explained his proposed actions and the results in terms I could understand. I found him through and trustworthy.Owen Carney
Fine, feel free to include my name — May 15, 2024
See more reviews on Healthgrades
Photo: Dr. Mark Mattar, MD
How would you rate your experience with Dr. Mark Mattar, MD?
  • Likelihood of recommending Dr. Mattar to family and friends

Dr. Mattar's Office & Staff

  • Ease of scheduling urgent appointments
  • Office environment, cleanliness, comfort, etc.
  • Staff friendliness and courteousness
  • Total wait time (waiting & exam rooms)

Experience with Dr. Mattar

  • Level of trust in provider's decisions
  • How well provider explains medical condition(s)
  • How well provider listens and answers questions
  • Hpends appropriate amount of time with patients

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Telehealth Options
This provider has not specified a telehealth appointment method. Would you still like to make an appointment with Dr. Mattar, or would you like to choose another provider and have an online appointment right now?
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(202) 444-1039

About Me

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.
Education

Education

Medical Education
  • Virginia Commonwealth University School of Medicine
    2004
Medical Education

Board Certifications

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

Internship
  • UCLA Olive View Program
    2005
Internship

Residency

Residency Hospital
  • UCLA Olive View Program
    2007
Residency Hospital

Fellowship

Fellowship Hospital
  • Georgetown University Hospital
    2010
Fellowship Hospital
Common Questions and Answers
Responses are sourced directly from patients.
Does Dr. Mattar communicate via email?
No users said yes.
Yes
(0)
No
(1)
Does Dr. Mattar offer telehealth services or virtual visits?
No users said yes.
Yes
(0)
No
(1)
Does Dr. Mattar offer an online patient portal?
1 user said yes.
Yes
(1)
No
(0)
Does Dr. Mattar have free onsite parking?
No users said yes.
Yes
(0)
No
(1)
Does Dr. Mattar offer weekend visits?
No users said yes.
Yes
(0)
No
(1)
Does Dr. Mattar offer evening visits?
No users said yes.
Yes
(0)
No
(1)
Does Dr. Mattar specialize in working with children or adolescents?
No responses yet.
Yes
(0)
No
(0)
Does Dr. Mattar specialize in working with seniors?
No responses yet.
Yes
(0)
No
(0)
Does Dr. Mattar specialize in couples therapy?
No responses yet.
Yes
(0)
No
(0)
Does Dr. Mattar specialize in working with LGBTQ+ community?
No responses yet.
Yes
(0)
No
(0)
Does Dr. Mattar accept insurance?
No responses yet.
Yes
(0)
No
(0)

Frequently Asked Questions

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: Inflammatory Bowel Disease, Infectious Diarrheal Disease and Enteritis. 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.

Hospital Affiliations

  • MedStar Georgetown University Hospital

    3800 Reservoir Rd NW, Washington, DC