Primary Care Physician
Dr. Mary Mattheos, MD
Internal Medicine
Cardiology
Nephrology
Diabetes Care
Chiropractic Care
Call 911 immediately if you believe you are experiencing a medical emergency.
About Us
The office of Dr. Mary Mattheos is located in Lindenhurst, Long Island. Dr. Mattheos has been treating patients since 1987 and provides highly accurate diagnoses.
The state-of-the-art office of Dr. Mattheos offers world-class medical care in Internal Medicine, Diet and Weight Loss, Diabetic Care, Cariology, Nephrology (Suffolk Nephrology Associates), and Chiropractic Care.
Our Departments
We provide world class treatment across several medical disciplines.
Internal Medicine
Internal Medicine
Learn MoreCardiology
Cardiology
Learn MoreDiabetic Care
Diabetic Care
Learn MoreOur Providers
Patient Testimonials
See why our patients love us.
☆☆☆☆☆ 4.6/5
"Found my new primary care physician. Dr. Mattheos was great! Very thorough and knowledgeable. I felt very comfortable."
"My favorite doctor to see - she really listens and is very understanding and helps the best of her ability."
"Very thorough, very attentive, very professional. Has great personality, made me feel totally comfortable."
"Dr. Mattheos is very thorough. Sincere. Great bedside manner. Highly recommend."
"I was with the dr. assistant and I would definitely refer him to other patients. He was thorough, patient and understanding."
"EXCELLENT AWESOME staff and Dr. Mattheos are extraordinary people. Love the professionalism and the stmosphere. Outstanding."
"She's incredible. Compassionate, and very thorough. I'd recommend her to any of my loved ones."
Conveniently Located on Montauk Highway
Operating Hours:
Monday
9:30 am - 8:00 pmTuesday
9:30 am - 8:00 pmWednesday
9:30 am - 5:30 pmThursday
9:30 am - 8:00 pmFriday
9:30 am - 5:30 pmSaturday
9:00 am - 1:00 pmSunday
CLOSED