Preferred Care Pharmacy is a full-service pharmacy employing a team of pharmacists, certified pharmacy technicians, billing experts, and nurse account managers that serve all of South Carolina.

Our pharmacy in Hollywood, S.C. proudly serves assisted living communities, memory care facilities and behavioral health homes throughout South Carolina. Our courteous, caring, committed team offers a full range of pharmacy services tailored to the needs of long-term care communities.

With over 20 years’ experience in long-term care, Preferred Care Pharmacy has long exemplified the meaning of extraordinary customer service. We believe in partnering with our customers to produce the best patient outcomes.

We have a rich history of developing and retaining quality staff. This has enabled us to develop many long-standing relationships with our customers, producing a very high rate of satisfaction.


David Whitlock, President
As president of Preferred Care Pharmacy and sister pharmacies Winyah Pharmacy Solutions and Guardian Pharmacy of the Piedmont, David oversees operations, sales and marketing, financials, account management and profitability. A 26-year veteran of the healthcare industry, David has spent the majority of his career in the long-term care pharmacy sector. He also has experience in hospital business development and operations, as well as skilled nursing facility administration and operations. He graduated with a bachelor’s degree in education from Winthrop College in 1987.

Diane Keisler, RPh, President & Pharmacy Director
Diane founded Preferred Care in 1996 and has over 25 years of experience in long-term care pharmacy. She leads the day-to-day operations for Preferred Care. Diane prides herself in being a hands-on director that manages the pharmacies’ operations, financials, and profitability. Born in Erwin, Tenn., Diane attended undergrad at East Tennessee State University before graduating from the Medical University of South Carolina College of Pharmacy in 1990.

Matthew Stanley, Director of Sales and Marketing
An expert in sales and account management, Matthew has been with Preferred Care since 2009. He leads business development, sales, customer relations and support. Matthew is also responsible for finding new business, onboarding new customers and supporting existing customers. He is a vital part of the Preferred Care team in supporting our mission of helping each community with whom we partner.

DeAnn Tuttle, PharmD, Consultant Pharmacist
DeAnn joined Preferred Care in 2000. As the consultant pharmacist to assisted living and group homes, she oversees the medication administration system and provides quality control inspections and medication management training. DeAnn graduated with a Bachelor of Science and PharmD degree from the Medical University of South Carolina and has worked in several different pharmacy arenas.