MM
15 Years of Experience
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Mattar, Gastroenterologist in Washington, DC?
Dr. Mark Mattar, MD is a Gastroenterologist, who primarily practices in Washington, DC with 2 additional practice locations. He has been practicing for over 15 years and is board certified by the American Board of Internal Medicine. Dr. Mattar is fluent in English, Arabic, and Spanish, and is currently seeing new patients. Dr. Mattar’s practice accepts Cigna, Kaiser Permanente, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Mattar’s office at (202) 444-8541.
Is Dr. Mattar board certified in Gastroenterologist?
Yes, Dr. Mark Mattar, MD is board certified by the American Board of Internal Medicine
What languages does Dr. Mattar speak?
Dr. Mattar and their clinical team can communicate with patients in the following languages:
Arabic
English
Spanish
What conditions does Dr. Mattar treat?
As a Gastroenterologist, Dr. Mattar diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Mattar. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly.
Also known as:
- Colon Cancer Screening
- Health Screening
- Colorectal Cancer Screening (PDQ®)
- Screening Tests to Detect Colorectal Cancer and Polyps
- Tests to Detect Colorectal Cancer and Polyps
- Colorectal Cancer Screening
- Colonoscopy Screening
- Bowel Cancer Screening
ICD-10 Codes:
- Z1211: Encounter for screening for malignant neoplasm of colon
Also known as:
- Crohn's Disease
- Crohn's Disease of the Small Intestine
- Crohn's Disease Affecting Small and Large Intestines
- Crohn's Disease of the Large Intestine
- Crohn’s Disease
- Regional Enteritis
- Inflammatory Bowel Disease (IBD)
- Terminal Ileitis
- Ileitis
- Panenteric Crohn's Disease
- Crohn's of Both Bowels', 'Generalized Crohn's Disease
- Large Bowel Crohn's
- Crohn's Colitis', 'Colonic Crohn's Disease
ICD-10 Codes:
- K5090: Crohn's disease, unspecified, without complications
- K5000: Crohn's disease of small intestine without complications
- K5080: Crohn's disease of both small and large intestine without complications
- K5010: Crohn's disease of large intestine without complications
Also known as:
- Ulcerative Colitis
- Ulcerative Pancolitis
- Ulcerative Proctitis
- Ulcerative Rectosigmoiditis
- Colitis
- Inflammatory Bowel Disease (IBD)
- Chronic Colitis
- Chronic Pancolitis
- Extensive Ulcerative Colitis
- Chronic Proctitis
- Rectal Inflammation
- Inflammation of the Rectum
- Chronic Rectosigmoiditis
- Inflammation of Rectum and Sigmoid Colon
- Distal Colitis
ICD-10 Codes:
- K5190: Ulcerative colitis, unspecified, without complications
- K5100: Ulcerative (chronic) pancolitis without complications
- K5120: Ulcerative (chronic) proctitis without complications
- K5150: Left sided colitis without complications
- K5130: Ulcerative (chronic) rectosigmoiditis without complications
Also known as:
- Other Long-Term Drug Therapy
- Chronic medication use
- Ongoing drug treatment
- Extended drug therapy
ICD-10 Codes:
- Z79899: Other long term (current) drug therapy
Also known as:
- Non-Infectious Gastroenteritis and Colitis
- Digestive Disease
- Inflammation of Stomach and Intestines
- Non-Bacterial Colitis
- Gut Inflammation
ICD-10 Codes:
- K529: Noninfective gastroenteritis and colitis, unspecified
Also known as:
- Acid Reflux
- GERD
- Acid Reflux (GER & GERD) in Adults
- Acid Reflux (GER & GERD) in Children
- Acid Reflux (GER & GERD) in Infants
- Gastroesophageal Reflux
- Heartburn
- Indigestion
ICD-10 Codes:
- K219: Gastro-esophageal reflux disease without esophagitis
Also known as:
- Diarrhea
- Loose stools
- Runny poop
- Frequent bowel movements
ICD-10 Codes:
- R197: Diarrhea, unspecified
Also known as:
- Iron Deficiency Anemia
- Anemia
- Iron
- Anemia from Iron Lack
- Low Iron Anemia
- Sideropenic Anemia
ICD-10 Codes:
- D509: Iron deficiency anemia, unspecified
Also known as:
- Dark, Tarry Stools (Melena)
- Gastrointestinal Bleeding
- Melena
- Black Stools
- Upper GI Bleed Signs
ICD-10 Codes:
- K921: Melena
Also known as:
- Routine Adult Health Checkup
- Health Checkup
- Adult physical exam
- Annual wellness visit for adults
- General adult medical exam
ICD-10 Codes:
- Z0000: Encounter for general adult medical examination without abnormal findings
Also known as:
- Chronic Stomach Inflammation
- Stomach Disorder
- Gastritis & Gastropathy
- Chronic gastritis
- Long-term stomach inflammation
- Persistent stomach lining inflammation
ICD-10 Codes:
- K2950: Unspecified chronic gastritis without bleeding
Also known as:
- Follow-up After Treatment (Non-Cancer)
- Post-Treatment Check-up
- Aftercare Visit
- Recovery Monitoring Exam
ICD-10 Codes:
- Z09: Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm
Also known as:
- Constipation
- Difficulty Passing Stool
- Infrequent Bowel Movements
- Hard Stools
ICD-10 Codes:
- K5900: Constipation, unspecified
Which procedures does Dr. Mattar perform as a Gastroenterologist?
As a Gastroenterologist, procedures performed by a Dr. Mark Mattar may include:
- Colonoscopy
- Colonoscopy Consultation
- Colorectal Cancer Screening
- Endoscopic Ultrasound
- Endoscopy / Endoscopic Ultrasound
- Gastric Balloon
- Gastric Stimulator Implantation Consultation
- Gastric Stimulator Implantation Follow Up
For detailed information, please contact Dr. Mattar's office.
Does Dr. Mattar accept my insurance?
Dr. Mattar accepts most major insurance plans. Important: Please call our office at (202) 444-8541 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Mattar accept in Washington, DC?
Dr. Mattar in Washington, DC accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
BCBS Unspecified
Carefirst BlueCross BlueShield
Cigna
CVS Health (formerly Aetna)
Department of Defense / Tricare
Federal Employee Program
Independence Blue Cross
Medicare
MedStar Health
UnitedHealthcare
View All Insurances
Where is Dr. Mattar's office located?
Dr. Mark Mattar's Primary Practice
3800 Reservoir Rd NW
Washington, DC 20007
(202) 444-8541
What is Dr. Mattar's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Mattar's National Provider Identifier (NPI) number is 1841401031.
What common questions do patients ask about Dr. Mattar?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Mattar
What is Dr. Mark Mattar's specialty?
Dr. Mattar is a Gastroenterologist near Washington, DC. An internist focused on diagnosing and treating disorders of the digestive system, encompassing the stomach, intestines, liver, and gallbladder. This specialist manages conditions like abdominal pain, ulcers, diarrhea, cancer, and jaundice, and performs intricate diagnostic and therapeutic procedures using endoscopes to examine internal organs. Contact Dr. Mattar to book an appointment today.
Is this Dr. Mark Mattar affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Mattar is affiliated with Medstar Georgetown University Hospital which is a Castle Connolly Top Hospital. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
Where can I learn more about Gastroenterologist?
Explore Gastroenterologist with insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is Mark Mattar accepting new patients in Washington, DC?
Yes, Dr. Mark Mattar is accepting new patients at this time.
Does Dr. Mark Mattar offer online booking?
Please contact Dr. Mattar's office at (202) 444-8541 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Mark Mattar?
Please contact Dr. Mattar's office at (202) 444-8541 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Mark Mattar have?
Dr. Mark Mattar is certified by the American Board of Internal Medicine.
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