Michael M. Mainero, MD


Dr. Michael M. Mainero is a gastroenterologist at Gastroenterology Associates of New Jersey (GANJ). Along with three board certifications, Dr. Mainero specializes in all aspects of diagnostic and therapeutic endoscopies, including endoscopic retrograde cholangiopancreatography (ERCP) and endoscopic ultrasound.

In addition to his position at GANJ, Dr. Mainero is a clinical instructor at St. George’s University School of Medicine and Chairman of the Medical Executive Committee at St. Joseph’s Regional Medical Center in Paterson, NJ.

Dr. Mainero completed a GI fellowship at St. Joseph’s Regional Medical Center in Paterson, NJ and Saint Michael’s Medical Center in Newark, NJ through Seton Hall University. He also completed his residency in internal medicine at St. Joseph’s Regional Medical Center in Paterson, NJ.

Dr. Mainero is a Fifth Pathway physician, receiving his medical degree from Universidad Autónoma de Guadalajara in Jalisco, Mexico and completing a year of clinical work at Rutgers New Jersey Medical School in Newark, NJ.

Dr. Mainero is currently a member of the Medical Society of New Jersey, the American Society for Gastrointestinal Endoscopy and the American College of Physicians. He is also a member of the American College of Gastroenterology and the American Gastroenterology Association.

My VideoBook AppointmentMy Locations

Meet Dr. Mainero

Make An Appointment

Appointments can be made either online or by phone.

Phone: 973.785.0102

To make an appointment online, please fill out the form below.


Dr. Mainero’s Locations

Clifton     Hawthorne     Lincoln Park     Montclair     Montville     Ringwood     Wayne     Woodland Park