Cornerstone Hospice and Palliative Care has a team of dedicated physicians who ensure that patients receive the comprehensive care and comfort they need and desire.

Lucy W. Ertenberg, MD
Vice President, Chief Medical Officer
Board Certifications: Hospice and Palliative Medicine and Family Medicine.

Angel Bruno, MD
Specialty: General Practice
Sumter County

Lowell Clark, MD
Board Certified: Internal Medicine
Sumter County

Felipe Collazo, MD
Board Certified: Family Practice / Geriatrics
Orange and Lake County

John Geeslin, MD
Board Certified: Emergency Medicine
Lake County

Cynthia Gregorio, MD
Specialty: Anesthesia
Polk County 

Ajit Hansalia, MD
Board Certified: Internal Medicine
Lake County 

Gary Lehman, MD
Board Certified: Family Practice / Geriatrics / Hospice & Palliative Care
Orange and Osceola Counties

Brian Liebersbach, MD
Board Certified: Internal Medicine / Pediatrics / Hospice & Palliative Care
Lake and Sumter County

Nelly Otero, MD
Board Certified: Family Practice
Lake County 

Kathleen Starbird, MD
Specialty: Internal Medicine / Geriatrics
Lake and Sumter Counties

Sujatharani Thiruman, MD
Specialty: Internal Medicine
Sumter County