Dr. Gregory Lesser
Dr. Gregory Lesser is a Gastroenterologist practice in Newark, NY. Rated 4.3 from 6 public reviews. Phone and website are listed.

Address
24 Merchant St #28, Newark, NJ 07105
Newark, NY 07105
Phone
(973) 344-4787Website
Visit listed websiteListing updates
Request a correction or opt-outListed hours
- Monday
- 9AM–5PM
- Tuesday
- 9AM–5PM
- Wednesday
- 9AM–5PM
- Thursday
- 9AM–5PM
- Friday
- 9AM–5PM
- Saturday
- Closed
- Sunday
- Closed
Credentials, affiliations, and coverage
Sources
- google-maps-octoparse · checked Aug 30, 2026
- google-maps-octoparse-cloud-recovery · checked Aug 12, 2026
Federal data is attributed to its source and does not imply CMS endorsement.
Newest photos

Newest reviews
Alexandra Ramos
Buen Médico y muy preocupado por sus pacientes
Daysa Crayton
No written review was provided.
Elrik Standor
Dr. Gregory Lesser and his staff are the absolute best. I went in for an Endoscopy today at 12 noon and it was flawless. I was afraid because I've never been put under before but it was quick and easy, before I knew it I was done with the procedure and on my way home. The anesthesiologist was amazing and funny hehe. The nurses and his staff are super professional and caring. Please do yourself a favor and let Dr. Gregory Lesser be your doctor for all your Gastrointestinal needs. I'm scheduled for my Colonoscopy next fyi.
Maria Acierno
No written review was provided.
Pau Ban (Noche negra)
No written review was provided.
Barbara Kelley
If Dr Lesser's female staff in that Newark NJ office calls me one more time to remind me of an appointment or try to schedule me again after I've already been treated by the doctor I will bring the police there for harrasment . I dont play games with peoole who have access to my personal information. And I wish she would come around my house. She's making uneccesary phone calls to harrass me as her private joke to anger his patients. Its not funny and Im scared. Dr Lesser needs this complaint brought to his attention. To be more selective about the goofball he hires.




