MKR Medical PC is a Brooklyn, New York medical practice providing cardiology, vascular care, primary care, internal medicine, and podiatry. Led by Dr. Marc Rybstein, the clinic describes its approach as evidence-based, with care informed by medical research and clinical guidelines. Its services include evaluation and management of cardiovascular conditions such as hypertension, high cholesterol, arrhythmias, and coronary artery disease, alongside preventive care and risk modification programs.

Patients can access diagnostic services including EKGs, echocardiography, vascular and cardiac testing, Holter monitoring, and exercise or nuclear stress tests. The practice also offers primary care and internal medicine appointments, as well as podiatry services for foot and lower-limb concerns, including plantar fasciitis and diabetic foot disease. Additional offerings mentioned include blood testing, surgical clearances, and COVID-19 rapid testing.

MKR Medical accepts walk-ins and MetroPlus insurance and provides online registration, appointment booking, and downloadable forms. Its office is located at 447 Fenimore Street in Brooklyn, and it serves neighborhoods across the borough.