Dr. Zachary R. Marwil
- Gender: Male
- Experience: 12 years
- Graduation year: 2009
- Sole propriator: No
- NPI: 1609002229
Dr. Zachary R. Marwil MD
Gastroenterologist
He is located at 3019 Merrick Road in Wantagh, NY 11793. Can help patients with the following: Chest Pain, Colitis, Headache, Internal Bleeding, Pancreas Divisum, Primary Biliary Cirrhosis (PBC). His National Provider Identifier (NPI) number is 1609002229. Appointment can be made via the phone number (516) 785-8075. He is affiliated with 3 practices and 1 hospitals.
Conditions treated
Dr. Zachary Marwil, being an gastroenterologist, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. Zachary R. Marwil.
- Abdominal Pain
- Acute Pain
- Anemia
- Arthritis
- Ascites
- Asthma
- Atherosclerosis
- Autoimmune Hepatitis
- Bad Breath
- Barrett's Esophagus
- Bladder Control
- Bleeding Varices
- Blood in Stool
- Botulism
- Cancer
- Carcinoid Tumor
- Celiac Disease
- Chest Pain
- Childhood Obesity
- Cholecystitis
- Chronic Obstructive Pulmonary Disease (COPD)
- Cirrhosis
- Clostridium Difficile Colitis
- Colitis
- Colonoscopy
- Common Cold
- Constipation
- Crohn's Disease
- Cystitis
- Diarrhea
- Diverticulosis
- Edema
- Eosinophilic Esophagitis
- Esophagitis
- Fatty Liver Disease
- Feeding and Swallowing
- Fever
- Food Allergies
- Gallbladder Pain
- Gastric Bypass Surgery
- Gastritis
- Gastroesophageal Reflux Disease (GERD)
- Gastroparesis
- General Care
- Headache
- Heart Disease
- Heartburn
- Helicobacter Pylori Infection
- Hemorrhoids
- Hepatitis A (HAV)
- Hepatitis B (HBV)
- Hepatitis C (HCV)
- Hiatal Hernia
- High Blood Pressure
- Hot Flashes
- Hyperlipidemia
- Hyponatremia
- Indigestion
- Inflammatory Bowel Disease (IBD)
- Influenza
- Inguinal Hernia
- Internal Bleeding
- Intussusception
- Irritable Bowel Syndrome (IBS)
- Lactose Intolerance
- Leaky Gut Syndrome
- Liver Disease
- Migraine
- Nausea and Vomiting
- Obesity
- Osteoporosis
- Pancreas Divisum
- Pancreatic Cancer
- Pancreatic Cysts
- Pancreatitis
- Peptic Ulcer
- Portal Hypertension
- Prescription Refill
- Primary Biliary Cirrhosis (PBC)
- Primary Sclerosing Cholangitis (PSC)
- Stomach Cancer
- Swallowing Disorders
- Ulcerative Colitis
- Urethritis
- Urinary Tract Infection (UTI)
Procedures Performed by Dr. Zachary R. Marwil
Medicare Enrollment
Dr. Zachary R. Marwil is enrolled to bill Medicare as a Practitioner - Gastroenterology (also registered under: Practitioner - Internal Medicine) .
Bills through: Phelps Memorial Hospital Association
Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and says nothing about other insurance, quality, outcomes, or board certification.
Payments received
Drug payment
| AbbVie | $677 |
| Gilead Sciences | $639 |
| Janssen | $495 |
Other
| Food and Beverage | $3100 |
| Consulting | $18 |
Studies
Graduated in 2009Additional Specialities
- Internist
- Resident
Affiliated practices
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Questions & Answers
Where can you meet with Dr. Zachary Marwil?
Dr. Zachary Marwil's office is located at 3019 Merrick Road in Wantagh, NY 11793.
Has Dr. Zachary Marwil affiliation with hospitals?
Dr. Zachary Marwil is affiliated with MERCY MEDICAL CENTER.
What conditions does Dr. Zachary Marwil treat?
Dr. Zachary Marwil provides treatment for Chest Pain, Colitis, Headache, Internal Bleeding, Pancreas Divisum, Primary Biliary Cirrhosis (PBC). For the full list see this list.
Does Dr. Zachary Marwil have affiliation with practices?
Dr. Zachary Marwil is affiliated with Westchester Gastroentrology Associates PC. For the full list of practices see this list.