Our team embodies our core values:

We are transparent, visible, and trusted with over 25 years of experience helping Independent Physicians, stay INDEPENDENT.

Our Valuable Team Members

Jeff Robertson, CMPE Chief Executive Officer

A passion for Healthcare is the best way to describe Jeff Robertson. He has a unique, varied, and extensive background in Healthcare that covers a wide array of experience encompassing 30 years. Jeff is board certified by the MGMA as a Medical Practice Executive and is a proud active member of MGMA. Jeff is also an active member of the Healthcare Business Management Association (HBMA) and continues to keep his knowledge current and focused on future trends and initiatives and how they affect our clients and their Clinic. Jeff has been actively running the Revenue Cycle Management and Practice Management divisions since 1997. Jeff Robertson, CMPE has spent over 25 years working with Independent Physician Clinics with a special focus on Medical Billing/Revenue Cycle Management, Healthcare IT, Clinical Workflow Analysis, and Bookkeeping and Financials. His passion and love of teaching, consulting, and finding a better, more efficient way to build processes into a clinic has led to him being labeled the “Practice Fixer”.

To date, he has installed, configured,    trained, and consulted over 400 Independent Physician Clinics across the country and has learned valuable lessons from each of them to share with all of our future clients.

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Debbie Hernandez, CPC Chief Operating Officer/Certified Professional Coder

Debbie leads the Revenue Cycle Division at Nexsys and shares her knowledge and experience which she has accumulated over 12+ years managing the Revenue Cycle Division which includes, Policies and Procedures, KPIs, Maximum Efficiency, and pulling every dollar out of the work our Physician clients perform. She excels at managing our Client’s accounts and facilitating and supporting the Nexsys team to ensure all of our clients are given the dedication and detail that each account requires. Debbie has proven to have excellent communication skills with our clients. Debbie is also responsible for helping to formulate and prepare complex commission structures for some of our larger groups. She is a valuable part of the Nexsys leadership team.

Julius Cabacungan Chief Information Officer

Julius has been at the forefront of Healthcare IT  for more than 25 years. He utilizes his accumulated experience as Senior Systems and Network administrator to quickly analyze the variety of IT, Data, and Security challenges to provide the most effective and efficient solutions. Since Julius joined Nexsys, he has integrated his vast IT knowledge with the understanding of Electronic Medical Records systems. This resulted in helping all Nexsys clients have operational integrity of their EMRs and information systems. Julius has a bachelor’s degree in Electronics Engineering and has MCSE (Microsoft) and CCNA (Cisco) certifications. He enjoys sports and loves playing tennis. He and his wife have two daughters.

Gelson Viera Chief Financial Officer/Accountant

Gelson Vieira is a 20 plus year veteran in the area of finance, with 8 years of experience in external audit at Coopers & Lybrand. He also spent time with the internal auditing department in Europe and the Middle East during his years at AIG Insurance Company.  Gelson’s tremendous knowledge of multiple languages including Portuguese, Spanish, French, and Italian made him a great asset to the international companies and divisions where he worked.
Gelson has led the Practice Management Division for Nexsys for over 7 years and in that capacity has managed the Bookkeeping, Financials; which includes Cash Flow Projections for Medical Practices throughout the country. He is uniquely qualified to ensure our client's systems and processes are transparent and accountable and minimize the need for our clients to employ a Practice Administrator or Office Manager, thereby keeping their staffing and overhead to a minimum. Gelson also helps the team of Billers and Coders in building out the Compensation Plans for our client Physicians. Many of our client groups have very detailed and complex compensation plans that involve many factors that our Accounting and Billing team work together to formulate and distribute to our clients. Additionally, Gelson manages the Accounts Payables, Accounting, Payroll, as well as special reporting needs of our clients. He is an invaluable member of our team and to each of our clients who rely on his accuracy, integrity, and accountability. 

Alex Lizarraga Medical Billing Account Manager

Alex has been a vital team member and mentor for Nexsys since joining our team in 2016. Alex is a trusted source for taking care of all of our clients needs and reports. Alex plays a key role in providing analysis and data to help both Nexsys Management as well as our clients; to make informed decisions supported by Data and Metrics. Alex is supporting our clients with everything from Coding help, payer analysis as well as helping the patients that put their faith in our clients and who we are all here to support. Her positive attitude and tremendous knowledge is a big part of the Nexsys culture that we try to share with all of our clients.

Victoria Herrera, CPC Medical Billing Account Manager

Victoria joined the Nexsys team after years as a Federal Credit Union Branch Supervisor. She made a career change and has been seeking certifications and growing her knowledge and experience, ever since. She has brought professionalism, intelligence, and a great attitude to the team.  Vicotria supports our clients with Coding and payer analysis.

Jerson Flores IT Administrator

Jerson has been an IT System Administrator/Engineer for over 13 years. He has extensive experience as a Senior Technical Support Administrator and Network Engineer. He built valuable experience providing in-house, on-site and remote end-user technical support throughout his career. Jerson has also provided project management, server administration, deployment, and infrastructure support for medium-sized and enterprise businesses.

Jerson focuses his time on automation and customization of the EHR for improved workflow. Jerson holds a Bachelors Degree in Software Engineering and multiple Certifications, including MTA, MCSE, and CCA-V. He spends most of his free time with his two daughters or on his hobbies in his spare time.