Meet Our Providers

With locations in Sumter, Columbia, and Manning, South Carolina, Colonial Healthcare offers some of the top specialists in their fields. Learn more about the physicians, physician assistants, and nurse practitioners at Colonial Healthcare below. To schedule a visit, call the office you’d like to visit or request an appointment online.

Ashley Shirley - Practice Administrator

Clay R. Lowder, MD – Family Medicine, Partner

Specialty: Family Medicine
Medical School: Cum Laude, University of South Carolina School of Medicine
Residency: Carolinas Medical Center
Location: Sumter, SC

Jason Leonard, MD, FAAFP, DABOM - Family Medicine, Obesity Medicine, Partner

Specialty: Family Medicine and Obesity Medicine
Medical School: Honors, University of Louisville
Residency: McLeod Family Medicine
Location: Sumter, SC

Dave Whaley, MD – Family Medicine, Partner

Specialty: Family Medicine
Medical School: University of North Carolina School of Medicine
Residency: Richland Memorial Hospital Family Practice
Location: Sumter, SC

Mitch Grunsky, MD – Family Medicine, Sleep Medicine, Partner

Specialty: Family Medicine and Sleep Medicine
Medical School: Magna Cum Laude, University of South Carolina School of Medicine
Residency: Cabbarus Family Medicine
Location: Sumter, SC

Thomas "Luke" Lucas, MD – Family Medicine, Partner

Specialty: Family Medicine
Medical School: Medical University of South Carolina
Residency: AnMed Health Family Medicine
Location: Sumter, SC

Edward Meyers, MD – Urgent Care, Partner

Specialty: Emergency Medicine
Medical School: Northeastern Ohio Universities College of Medicine
Residency: Summa Health System
Location: Sumter and Manning, SC

Ike Stewart, MD – Family Medicine, Partner

Specialty: Family Medicine
Medical School: Penn State College of Medicine
Residency: Reading Hospital and Medical Center
Location: Sumter, SC

Chris Mahr, MD – Family Medicine, Partner

Specialty: Family Medicine
Residency: Reading Hospital, Reading PA
Location: Sumter, SC

Carlos A. Soto, MD, DABOM - Family Medicine, Obesity Medicine, Partner

Specialty: Family Medicine and Obesity Medicine
Medical School: Universidad de Valle Cali-Colombia
Residency: USC/Palmetto Health Richland
Location: Columbia, SC

John K. Baker, MD – Neurology

Specialty: Neurology
Medical School: University of South Carolina School of Medicine
Residency: Neurology, Duke University Medical Center
Location: Sumter, SC

Carrie Judy, MD – Family Medicine

Specialty: Family Medicine
Medical School: Penn State College of Medicine
Residency: Eglin Air Force Base
Location: Sumter, SC

William C. Aldrich, MD – Family Medicine

Specialty: Family Medicine
Medical School: Medical University of South Carolina (MUSC)
Residency: Pathology, MUSC and Greenville Memorial Hospital Family Medicine
Location: Manning, SC

Winston Morris, MD – Family Medicine

Specialty: Family Medicine
Residency: Self Memorial Hospital
Location: Columbia, SC

David R. Trigg, MD, MPH; Lt. Col, USAF, Ret – Family Medicine

Specialty: Family Medicine
Residency: Spartanburg Regional Medical Center, Spartanburg, SC and USAF School of Aerospace Medicine, Brooks City-Base, TX
Location: Sumter and Columbia, SC

Robert Ridgeway III, MD - Family Medicine

Specialty: Family Medicine
Location: Manning, SC

Joseph Adams, MD - Family Medicine

Specialty: Family Medicine
Residency: University of Louisville
Location: Sumter, SC

Rebecca Haskill-Strowd, MD - Family Medicine

Specialty: Family Medicine
Medical School: Medical University of South Carolina
Residency: Spartanburg Regional Medical Center
Location: Manning, SC