Medical Providers

Aaron Marquardt, MD

Physician and Chief Medical Officer

Anthony Perkins, APRN, FNP-C

Nurse Practitioner

David Culp, APRN, FNP-C

Nurse Practitioner and Director of Clinical Services

Laurie Hamilton, APRN, FNP-C

Nurse Practitioner and Director of Quality Management

Tammy Jones, DO


Medical Staff

Alexia Clark, CMA

Medical Assistant

Beth Swanner, RD


Chad Giovingo-Moore, LPN

Clinic Nurse

Reesa Alexander, LPN

Medical Case Manager

Tabia Starks

Medical Assistant

Behavioral Health and Substance Use

Amanda Norris, PhD


DeeDee Toney, LPC-S

Substance Use Counselor and Director of Support Services

Vickie Remillard, LCSW

Social Worker

Support Services

Ann Booth

Benefits Coordinator

Christy McPherson

Community Based Outreach Worker

Gwen Guillory

Linkage and Prevention Coordinator

Ray Roberson

Non-Medical Case Manager

Rusty Chambless

GBT Center Coordinator, Purchasing, and Corporate Compliance Officer

Tena Dunn

Non-Medical Case Manager

Toni McFarland

Non-Medical Case Manager


DeeDee Toney, LPC-S

Director of Support Services

Jamie Killian

Front Office Coordinator

Jeremy Jones

Front Office Coordinator

Jessica Bass

Data Coordinator

Mark L Windham

Chief Executive Officer

Nancy Head

Director of Fiscal Services