President & Founder

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Epic Medical Group


4955 Van Nuys Blvd, Suite 308

Sherman Oaks, CA 91403

P: (818) 528-1044 

F: (818) 817-0845



Meet Our Hospitalists

Dr. Sam Nuthalapaty, MD
Dr. Edmond Derderyan, MD

"I enjoy getting to know my patients. I am driven by the constant motivation to provide compassionate, timely, evidence based, quality care to the residents in the greater San Fernando Valley area."

Director of Hospitalist Services
Dr. Oleg Liakhovetski, MD

"I am dedicated to providing quality care and treating each and every patient as though they were a member of my family. Our Continuum of Care efforts within the community helps us build relations with both patients and their families."

Keino Rutherford, MD
Dr. Tim Stacy, DNP

"I provide outstanding, individualized, quality patient care by applying evidence based practice standards in a compassionate and holistic manner."

Haneen Khamag, MD

"My goal is to provide you and your family with excellent, personalized, and efficient medical care. Evidence based practice is the foundation of my medical decision making. Throughout  your hospitalization, I will spend the time to communicate the assessment of your health status, your plan of care, and expected outcomes." 

Cheryl Catalan, NP
Chris Negrete, NP
Lauren Wilstein, NP
Noel Nunez, NP
Greg Andonian, MD
Andrew Pascual, DNP​
Santa Kerzuma, DO
Dimitriy Tretiak, NP
Janet Bakalian, NP (Gastroenterology)