Welcome to Our Practice

Gastroenterology Associates of Fairfield County welcomes you! Please see our recent announcements below:

We are pleased to announce that as of January 1, 2019
Fairfield County Internal Medicine and Gastroenterology Associates, PC 
 Gastroenterology Specialty Group, LLC
Gastroenterology Associates of Fairfield County, PC
Have combined under the name:
Gastroenterology Associates of Fairfield County, PC

Our providers and locations now include:
425 Post Road • Fairfield, CT 06824 • Tel 203.292.9000 • Fax 203.292.0833
2660 Main Street • Bridgeport, CT 06606 • Tel 203.333.3328 • Fax 203.336.3823

Kenneth R. Mauer, MD
Strick J. Woods, MD
Julie E. Spivack, MD 
Eddy A. Castillo, MD
Emil J. Blanco, MD
Gena M. Cobrin, MD
 Daniel Stewart, PA-C
Brian Clancy, PA-C

115 Technology Drive Ste B201 • Trumbull, CT 06611 • Tel 203.452-1411 • Fax 203.452.1412
425 Post Road • Fairfield, CT 06824 • Tel 203.292.9000 • Fax 203.292.0833

Tarun K. Gupta, MD
Daniel P. Stupak, MD 
Nanci Kaczegowicz, APRN

4641 Main Street • Bridgeport, CT 06606 • Tel 203.374.4966 • Fax 203.374.4966
425 Post Road • Fairfield, CT 06824 • Tel 203.292.9000 • Fax 203.292.0833

Nicholas A. Lillo, MD
Alan M. Nelson, MD

To make an appointment or for more information please continue to use the telephone numbers you have used to reach us in the past.
Each provider will continue to see patients in the office locations they have used in the past.



Dr. Lopatin will be retiring.

"To my patients, colleagues, and friends,

After many decades in medical practice, I will be retiring. This will be effective on December 31, 2018. I would like to thank all of you for what has been a wonderful and fulfilling career. My talented partners, who care for me and my family, can skillfully manage all of your GI issues. I am available to counsel you on your choice of a physician including local Internists. It has been my privilege to serve you. "


Richard Lopatin, MD


We are pleased to announce that Dr. Kenneth Mauer has been named among

America's Most Honored Professionals 2017 

Top 1%

Congratulations Dr. Mauer!



Check out our New FUSE Endoscopy Scopes!!

Gastroenterology Associates of Fairfield County is pleased to announce that we are now using the latest in endoscope technology in our endoscopy center "The Endoscopy Center of Fairfield" located at 425 Post Rd. in Fairfield.

We have recently installed FUSE scopes which provide a much broader range of vision for your endoscopist.

Check it out here:



At Gastroenterology Associates of Fairfield County, we believe that each patient and doctor become a team for treating an individual's digestive problems. Our gastroenterologists spend most of their time listening to understand your concerns and responding with the best treatment options for you. With the help of our professional staff, they also follow up to make sure that problems are resolved and your health improves.

We want our patients to be informed about their digestive problems and treatments, because informed patients make better decisions about their health and well being. That is why we've included a section on this website covering common topics associated with gastroenterlology and endoscopic procedures. We encourage you to look through these pages whenever you have an interest or concern related to your digestive health.

We also know that convenience is important to your selection of a gastroenterologist in Fairfield. In these web pages you'll find information about Gastroenterology Associates of Fairfield County's office, including our location, maps, directions, hours and insurance policies. Please feel free to contact us with any questions you have or to request an appointment. We hope you find our practice offers the accessibility and personal commitment you look for from a gastroenterologist close to home.

Coronavirus (COVID-19)

New guidelines for this practice
Update 3/27/2020

Visitors and Patients:

Due to COVID19 we are now using telemedicine in our practice.

This is a simple, approved, secure and effective way to speak with your provider.

If you call us and reach our answering service please leave a message and we will call you back.

If a telemedicine visit is appropriate we will give you directions and send a link for your session.

Thank you
Be Well