Welcome to Sullivan Internal Medicine Group P.C.

Sullivan Internal Medicine Group P.C. is a Comprehensive Diagnostic Center, and we have been serving the community since 1971. Our facility is comprised of Board Certified Physicians trained to diagnose and treat adult illnesses. We specialize in Internal and Pulmonary Medicine, Gastroenterology, Liver Disease, Asthma and Hypertension. We also offer women's health services. We are gladly accepting new patients by appointment Monday through Saturday.

Our specialists on staff are as follows:

Sullivan Internal Medicine Group P.C.
518 Broadway, Monticello, NY 12701 | Phone: (845) 794-1600
Hours of Operation: Monday - Friday: 9:00 A.M. - 5:00 P.M. | Saturday: 9:00 A.M. - 3:00 P.M.

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• Sheldon D. Leidner, M.D., F.A.C.G. - specializing in Internal Medicine and Gastroenterology
• Jonathan Weiss, M.D., F.C.C.P. - specializing in Internal and Pulmonary Medicine and Critical Care.
• Dr. Gary Garfield, F.C.C.P. - specializing in Internal and Pulmonary Medicine
• Cynthia Gilmour, F.N.P. - specializing in Primary Care and Women's Health

Here is a comprehensive list of all the services our center provides:

• Allergies
• Alternative Medicine
• Breast exams
• Cholesterol Screening
• Depo-Provera
• Diabetic Care
• Digestive Disorders
• Echocardiogram
• Electronic Medical Record
• EKGs
• Endometriosis
• Flu Vaccines
• Gastroenterology
• Holter Montior
• Hormone Replacement Therapy
• Human Growth Hormones
• Immunizations
• Injuries
  

• Internal Medicine
• Laboratory
• Medicare
• Nurse Practitioners
• Occupational Medicine
• Pap/Pelvic exams
• Parking
• Physicals
• Pregnancy Testing
• Pulmonary
• Pulmonary Function Tests
• Stomach Disorders
• Women's Health
• Work Related Injuries
• Workers' Compensation
• X-rays
• Yeast Infections