Our Physicians and ARNPs

Cornerstone Hospice and Palliative Care has a team of dedicated Physicians and ARNPs 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; Family Medicine.

Angel Bruno, MD
Specialty: General Practice
Sumter County

Francisco Chebly, MD
Board Certified:  Internal Medicine; Hospice and Palliative Medicine
Polk County

Lowell Clark, MD
Board Certified: Internal Medicine
Sumter County

Felipe Collazo, MD
Board Certified: Family Medicine / Geriatrics; Hospice and Palliative Medicine
Orange and Osceola County

Ajit Hansalia, MD
Board Certified: Internal Medicine; Hospice and Palliative Medicine
Lake County 

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

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

Nelly Otero, MD
Specialty: Family Practice
Lake County 

Ramon Perez, MD
Specialty:  Internal Medicine
Sumter County

Michael Shiparo, MD
Board Certified:  Family Medicine
Fellow: Hospice & Palliative Medicine
Polk County

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

Percival Tamayo, MD
Specialty:  Internal Medicine
Highlands and Hardee Counties

Nurse Practitioners:

Gayle Bartoe, ARNP
Highlands County

Kate McCaffrey, ARNP
Polk, Hardee and Highlands Counties

Lesa Mariner, ARNP
Specialty  Family Medicine
Lake and Sumter Counties