Our Team

Guided by the experienced and dedicated leadership of Arvinder Singh, Founder and CEO of ZAS Management Systems, the company is well-positioned to take medical practice business management beyond traditional limits.

Meet our Team

We are committed to your success!

Founder and CEO


Arvinder (AP) Singh founded ZAS Management Systems in 2002 with a determination to help physicians and their practices obtain optimal reimbursement by managing their Revenue Cycle Management and Healthcare IT needs. With the passage of the ARRA in 2009…

Director Of Operations


Darci joined the ZAS team in early 2012, and brings with her over 20 years of medical billing experience and medical transcription work. Her prior experience includes chiropractic billing, facial plastic surgery, otolaryngology and pediatrics…

Manager of Sales and Business Development


Jenna Kuhlen joined ZAS in 2023 to lead our sales efforts and has already proven herself to be a valuable collaborator and contributor. A seasoned Sales/Business development specialist and former serial entrepreneur, her goal is to support her ZAS clients and teammates with individualized results driven attention to achieve mutual success.



Cookie has been in the medical field for over 25 years, from Chiropractic billing to receptionist for Medical PCP, Chiropractic and Gynecology. Working these 25 plus years in the medical field has taught her to work closely with patients expediently…

Billing Manager


Pawan is the Billing Manager, and joined ZAS in 2017. Pawan has over 15 years of experience on various Leadership roles in Revenue Cycle Management…

Operational Leadership


Navin has been with ZAS since 2002, serving in various operational leadership roles. Navin is a driven, passionate, energetic leader, who builds and creates partnerships to impact access…

Customer Service Representative


Debbie has years of customer service experience in the retail field as past manager of a local business.Years of volunteer work in my community has trained me to show personal attention to others requests and needs, which is always used with our ZAS clients.