Sullivan Internal Medicine Group

Open today from 9:00 am to 1:00 pm • Call to schedule a visit.
Clinic Location

32 Thompson Square Suite 5
Monticello, NY 12701

Sullivan County
Contact Information

About This Clinic in Monticello, New York

Welcome to the primary care reference profile for **Sullivan Internal Medicine Group**, an operational healthcare clinic located at 32 Thompson Square Suite 5 Monticello, NY 12701 . Serving the Sullivan County community, patients receive care from a multi-provider medical team including Jonathan Weiss, MD, FCCP, Sheldon Leidner, MD, and other qualified specialists. Sullivan Internal Medicine Group accommodates multiple health coverage options, accepting major networks such as **Medicare**. This provider is open 6 days a week. Read further below to access their local phone number, detailed weekly office hours, and patient reviews.

Sullivan Internal Medicine Group provides dedicated healthcare services to patients of all ages, emphasizing preventative care and chronic disease management. The practice features Board Certified physicians trained in Internal Medicine and Pediatrics, catering to a wide range of health needs from infancy to adulthood. They offer various services including acute care, well child visits, women's health, and treatment for chronic conditions such as asthma and hypertension. The facility accepts new patients and fosters strong relationships with local specialists to enhance overall patient care.

Hours of Operation

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Day Hours
Monday 8:00 am - 8:00 pm
Tuesday 8:00 am - 8:00 pm
Wednesday 8:00 am - 8:00 pm
Thursday 8:00 am - 8:00 pm
Friday 8:00 am - 8:00 pm
Saturday 9:00 am - 1:00 pm

Care Services

  • Acute care
  • Allergy and immunology
  • Asthma management
  • Bronchoscopy procedures
  • Chronic disease management
  • COVID-19 monoclonal antibodies
  • Diabetes management in children and teens
  • Gastroenterology
  • Hematology and oncology
  • Hereditary cancer screening
  • Hypertension management
  • Immunizations
  • Internal medicine
  • Liver disease
  • Occupational medicine
  • Ophthalmology and optometry
  • Pain management and rehabilitation
  • Pediatric endocrinology
  • Post COVID-19 recovery
  • Primary care
  • Pulmonary and sleep medicine
  • Pulmonary function testing.
  • Radiology and ultrasound
  • Treating ADHD with TMS
  • Treating anxiety with TMS
  • Treating depression with TMS
  • Treating PTSD with TMS
  • Well child visits
  • Women’s health services

Accepted Insurance Plans

Need to verify your coverage? Sullivan Internal Medicine Group and its resident providers could accept the insurance plans listed below. Because coverage can change, we recommend a quick call to the clinic at (845) 794-1600 to confirm they accept your specific plan before your appointment.

Medicare

Medicare

Meet Your Care Team

Our dedicated team provides comprehensive care in Stonewall. View provider specialties below to find the right fit for your needs.

Gary C Garfield, DO

Internal Medicine (Pulmonary Disease)

MRS. Cynthia Gilmour, FNP

Nurse Practitioner (Family)

Lee Ann Hubbert, FNP

Nurse Practitioner (Family)

Sheldon D. Leidner, MD

Internal Medicine (Gastroenterology)

Christina Strong, LPN

Licensed Practical Nurse

Jonathan R. Weiss, MD, FCCP

Internal Medicine (Pulmonary Disease)

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