Our Providers

Meet our Medical Team

Our team of dedicated health professionals work together as a team to provide high-quality comprehensive health care services in a warm, compassionate setting.

Mark Operario, MD

Dr. Mark Operario is a Board Certified Internal Medicine provider at Caldwell Memorial Hospital. His extensive experience in health care services provides patients and families with a peace of mind knowing they're in the best of hands.

Jeremiah King , FNP standing in front of sign at Wisner Rural Health Clinic in Wisner Louisiana.
Jeremiah King MSN, FNP-C

Jeremiah King MSN, FNP-C is a Family Nurse Practitioner at Wisner Rural Health Clinic and the Caldwell Memorial Hospital.  He joins our team with over 21 years of experience in healthcare, and is excited to provide patient care to our community.

Madelyn Corkern, D.O.

Dr. Madelyn Corkern, D.O. earned her undergraduate degree in Biological Services at the University of New Orleans and her Doctorate in Osteopathic Medicine at the William Carey University at Harrisburg, MS. As a Family Medicine Physician, she always strive to provide comprehensive and compassionate care to all her patients.

Janice West, FNP

Janice West, Family Nurse Practitioner, is a provider at our rural health clinic in Columbia, LA. Her passion for patient care creates a warm, nurturing environment at Winter's Rural Health Clinic.

Rhonda Walker, FNP

Rhonda Walker, Family Nurse Practitioner, provides care at our rural health clinic in Chatham, LA. Her and her team provide a personalized approach to health care services within a vibrant, comfortable setting.

Lisa Smiths, FNP

Lisa Sanders, Family Nurse Practitioner, provides care to patients of Caldwell Memorial Hospital & Winters Health Clinic. She strives to create a warm, safe setting for her patients to receive quality health care services.