Our Team


Guy Louthian

Founder & President

A skilled veteran of the medical field for the past 34 years, Guy’s career has been concentrated in helping office-based healthcare providers solve their business revenue and cash management challenges, diagnosing and solving the headaches that medical practices often encounter.

Prior to founding Physician Services, Guy served as Chief Operating Officer for an emerging physician billing firm and as COO for a Durable Medical Equipment provider.

As an expert in Practice Revenue Enhancement and Revenue Cycle Management, Guy started Physician Services USA in 2002 to meet the growing demand from healthcare providers to diagnose and solve their practice cash flow issues.

Guy and his dedicated staff at Physician Services USA work with multiple physician practices across the nation in areas such as Practice Management, Revenue Cycle Management, Practice Consulting, and Software Training.

A graduate of Clemson University with a degree in business, Guy is married with 2 children and one grandchild. In his spare time enjoys spending time with his family, riding his Harley, and enthusiastically cheering for Clemson sports.


Shannon Strange

Chief Operating Officer

Shannon joined the PSUSA family in 2008 as a Medical Billing Specialist, enabling her to learn the complexities of dealing with insurance companies.

Promoted in 2011, Shannon mentored as the Executive Administrative Assistant to the owner, learning company management principles to help physicians manage the complex business side of their practice. 

Shannon’s role grew in 2013, becoming the Office Manager, utilizing her production experience and mentorship to assist in the management of the company’s operations, all while scaling up the organization’s infrastructure as it doubled in size over a two-year period, culminating in her promotion to COO.

In her spare time, Shannon enjoys traveling with her husband Garet and spending time with their two beautiful girls.


Sandra Humphries CPC, CH-CBS, RH-CBS

Senior Project Manager

Sandra joined PSUSA in 2008, bringing over 15 years management experience in the medical field. 

A Certified Professional Coder (CPC), as well as additional credentialing, including Rural Health Coding and Billing Specialist (RH-CBS), as well as Community Health Coding and Billing Specialist (CH-CBS).

Sandra is a member of the ARHPC (Association for Rural Health Professional coding), AAPC (American Academy of Professional Coders), and Capital Coders where she serves as the Vice President.

She is married, has 2 daughters and a son and enjoys camping in her free time.


Meagan Arant CPC, CH-CBS, RH-CBS, EMS


Meagan began her career at Physician Services USA in 2013 as an extern, completing both a Medical Billing and Coding Diploma and Professional Coder certifications curriculum.  Meagan has demonstrated a high acumen for revenue cycle management, continuing to rise within leadership as the company has scaled upwards.

In her current position as FQHC/RHC Program Coordinator, Meagan manages FQHC portfolios, supporting a large team of onsite- and remote-billers, all while continuing her education, including training with the Association for Rural Professional Coding and obtaining certifications in Community Health – Coding & Billing Specialist (CH-CBS) and Rural Health – Coding & Billing Specialist (RH-CBS).

Meagan has recently added another educational accomplishment as a certified Rural & Community Health Evaluation & Management Auditor.