Internal Medicine
Comprehensive primary and preventive care tailored to your health, history, and goals.
Learn more →Care that listens
Compassionate, expert care for every chapter of your health.
Personalized Internal Medicine, Gastroenterology & Liver Disease care across Manhattan and Brooklyn.
Patient-centered careExperienced. Attentive. Here for you.
Personalized CareThoughtful visits centered on you
Two NYC LocationsUpper East Side & Brooklyn
Accepting New PatientsIn-person and telemedicine visits
Your Partners in HealthInternal Medicine & Gastroenterology
Complete, coordinated care
Care for your whole health, all in one trusted practice.
From routine wellness and preventive medicine to specialized digestive and liver care, our physicians combine clinical experience with a personal approach.
Gastroenterology
Thoughtful evaluation and treatment for digestive symptoms and gastrointestinal conditions.
Learn more →Liver Disease
Specialized assessment, monitoring, and care for a full range of liver conditions.
Learn more →Preventive Screenings
Evidence-based screenings and wellness visits designed to help you stay ahead of illness.
Learn more →Endoscopy & Colonoscopy
Expert diagnostic procedures and colon cancer screening with attentive follow-up.
Learn more →Weight Loss & GLP-1 Consults
Personalized weight-management consultations, including evaluation for GLP-1 medications when medically appropriate.
Learn more →Meet your physicians
Experience you can trust. Care you can feel.
Our doctors listen carefully, explain clearly, and create a plan that fits your life.
Internal Medicine
Helen P. Gouzoulis, M.D.
Dr. Gouzoulis provides comprehensive internal medicine and preventive care for adults, building long-term relationships with patients through careful listening and clear guidance. Her approach brings routine wellness, chronic-condition management, and preventive screening together in one personalized care plan.
Known for her warm and attentive style, Dr. Gouzoulis helps patients understand their health and feel comfortable taking an active role in their care. She welcomes patients in Manhattan and by telemedicine and speaks English and Greek.
Credentials & Professional Background
- Board Certification: American Board of Internal Medicine
- Medical Education: National and Kapodistrian University of Athens School of Medicine
- Clinical Training: North Shore University Hospital and Memorial Sloan Kettering Cancer Center
- Professional Membership: Hellenic Medical Society of New York
- Languages: English and Greek
Gastroenterology & Liver Disease
Markos I. Koutsos, M.D.
Dr. Koutsos specializes in Gastroenterology & Liver Disease, providing thoughtful evaluation and treatment for digestive symptoms, gastrointestinal conditions, and liver disorders. His care includes preventive colon cancer screening, endoscopy and colonoscopy, and noninvasive liver assessment when appropriate.
With an attentive, reassuring approach, Dr. Koutsos takes time to explain findings and treatment options so patients can make informed decisions. He sees patients in Manhattan, Brooklyn, and by telemedicine and speaks English and Greek.
Credentials & Professional Background
- Medical Education: National and Kapodistrian University of Athens School of Medicine
- Internal Medicine Residency: Grant Hospital of Chicago
- Fellowship: Gastroenterology & Liver Disease, NewYork-Presbyterian/Weill Cornell Medical Center
- Advanced Endoscopy Training: Royal Liverpool University Hospital
- Professional Memberships: American Gastroenterological Association, American College of Gastroenterology, and American College of Physicians
- Languages: English and Greek
Verified patient feedback
What patients say about our physicians.
Review excerpts are from verified patients on Zocdoc. Visit each physician’s profile to read additional patient experiences.
Internal Medicine
Dr. Helen P. Gouzoulis
★★★★★“Professional, friendly, and laid back.”
Verified patient · Zocdoc
★★★★★“Makes you feel very comfortable.”
Verified patient · Zocdoc
★★★★★“Thoughtful, kind, and highly competent.”
Verified patient · Zocdoc
Gastroenterology & Liver Disease
Dr. Markos I. Koutsos
★★★★★“Attentive and a fantastic communicator.”
Verified patient · Zocdoc
★★★★★“Excellent bedside manner.”
Verified patient · Zocdoc
★★★★★“Amazing empathy and listening skills.”
Verified patient · Zocdoc
Patient resources
Everything you need for a smoother visit.
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New patient information
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Visit us
Care close to home.
Upper East Side
Manhattan Office
111 East 80th Street, Suite 1ANew York, NY 10075
Phone(212) 327-1500
Bay Ridge
Brooklyn Office
7401 4th AvenueBrooklyn, NY 11209
Phone(718) 491-0706