Overview
Dr. Collier is graduate from Georgetown University Medical School, Washington D.C. and he has been in practice since 2000 in Rockville, MD. Dr. Collier received advanced training in Gastroenterology and Endoscopic Ultrasound from prestigious organizations such as Georgetown University Hospital, Washington Veteran's Hospital and the National Institutes of Health. Dr. Collier's top priority is to advance the delivery of care for patients suffering from digestive health conditions. His goal is to provide high quality patient care, medical diagnosis and the most effective treatment. He is married with three children. For more information on Dr. Collier, visit CapitalDigestiveCare.com.
Dr. Collier is rated as an Experienced provider by MediFind in the treatment of Macroamylasemia. His top areas of expertise are Irritable Bowel Syndrome (IBS), Indigestion, Gastroesophageal Reflux Disease (GERD), Portal Hypertension, and Gastrectomy.
Insurance
Accepted insurance can change. Please verify directly with the provider.
Accepted insurance plans:
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- POS
- PPO
- EPO
- INSURANCE PLAN
- MEDICARE MAPD
- MEDICARE PDP
- OTHER COMMERCIAL
- OTHER MEDICARE
- PPO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- OTHER MEDICARE PART D
- PPO
- HMO
- POS
- PPO
- EPO
- HMO
- PPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- OTHER COMMERCIAL
- OTHER MEDICARE
- OTHER MEDICARE PART D
- PPO
- EPO
- HMO
- PPO
- HMO
- INDEMNITY
- POS
- PPO
- EPO
- POS
- PPO
- HMO
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE-MEDICAID PLAN
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- OTHER MEDICARE
- POS
- PPO
- OTHER MANAGED MEDICAID
- EPO
- HMO
- PPO
- OTHER MEDICAID
- STATE MEDICAID
- HMO
- PPO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE PART D
- INSURANCE PLAN
- MEDICARE MAPD
- OTHER COMMERCIAL
- PPO
- EPO
- HMO
- POS
- PPO
- EPO
- PPO
- MEDICARE DISCOUNT CARD
- MEDICARE PDP
- OTHER MEDICARE
- EPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE
- OTHER MEDICARE PART D
Locations
6100 Executive Boulevard, Suite 301, Suite 301, North Bethesda, MD 20852
Medstar Medical Group Ii LLC
Nadim Haddad is a Gastroenterologist in Washington, Washington, D.c.. Dr. Haddad is rated as a Distinguished provider by MediFind in the treatment of Macroamylasemia. His top areas of expertise are Gallstones, Gallbladder Disease, Bile Duct Obstruction, Gallbladder Removal, and Endoscopy. Dr. Haddad is currently accepting new patients.
Gastroenterology Associates Of Northern Virginia, LLC
Andrew Axelrad is a Gastroenterologist in Fairfax, Virginia. Dr. Axelrad is rated as an Advanced provider by MediFind in the treatment of Macroamylasemia. His top areas of expertise are Ulcerative Colitis, Familial Adenomatous Polyposis, Macroamylasemia, Gastrectomy, and Endoscopy.
Johns Hopkins Health Care & Surgery Center - Green Spring Station, Lutherville
Natarajan Ravendhran is a hepatologist specializing in the diagnosis, treatment and management of liver diseases. He received his medical degree from Stanley Medical College, University of Madras in India, completed his residency in internal medicine at what is now Ascension Saint Agnes Hospital in Maryland and a residency in surgery at Railway Hospital in Madras, India. Dr. Ravendhran performed fellowship training in hepatology under the mentorship of Eugene and Leon Schiff at the University of Miami. Additionally, he received fellowship training in gastroenterology and liver disease at the University of Missouri. Dr. Ravendhran received a master’s degree in business administration in medical services management from The Johns Hopkins University. He is a fellow of the American Association for the Study of Liver Diseases and the American Gastroenterological Association, and is a member of the European Association for the Study of the Liver. Dr. Ravendhran is interested in exploring cholestatic disorders. He has participated in many clinical trials that focus on hepatitis B and C, in addition to metabolic dysfunction-associated steatotic liver disease trials. He enjoys teaching, rounding with fellows and seeing patients, and his motto is “Patients come first!”. Dr. Ravendhran is rated as a Distinguished provider by MediFind in the treatment of Macroamylasemia. His top areas of expertise are Non-Alcoholic Fatty Liver Disease, Hepatitis, Visceromegaly, Enlarged Liver, and Endoscopy.
Areas of Expertise
MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.
Learn more about MediFind’s expert tiers
- Distinguished
- Gastroesophageal Reflux Disease (GERD)Dr. Collier isDistinguished. Learn about Gastroesophageal Reflux Disease (GERD).
- IndigestionDr. Collier isDistinguished. Learn about Indigestion.
- Irritable Bowel Syndrome (IBS)Dr. Collier isDistinguished. Learn about Irritable Bowel Syndrome (IBS).
- Advanced
- Anal FissureDr. Collier isAdvanced. Learn about Anal Fissure.
- Barrett EsophagusDr. Collier isAdvanced. Learn about Barrett Esophagus.
- Celiac DiseaseDr. Collier isAdvanced. Learn about Celiac Disease.
- Childhood VolvulusDr. Collier isAdvanced. Learn about Childhood Volvulus.
- Chronic Erosive GastritisDr. Collier isAdvanced. Learn about Chronic Erosive Gastritis.
- ColitisDr. Collier isAdvanced. Learn about Colitis.
- Experienced
- AchalasiaDr. Collier isExperienced. Learn about Achalasia.
- Acute PancreatitisDr. Collier isExperienced. Learn about Acute Pancreatitis.
- Alcoholic CirrhosisDr. Collier isExperienced. Learn about Alcoholic Cirrhosis.
- AnemiaDr. Collier isExperienced. Learn about Anemia.
- Angiodysplasia of the ColonDr. Collier isExperienced. Learn about Angiodysplasia of the Colon.
- Arteriovenous MalformationDr. Collier isExperienced. Learn about Arteriovenous Malformation.