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MGSI Management Team


Anthony F. Maniscalco

Chief Financial Officer

Michael McMahon

Coding Manager

Kathy Killian


Niurka Moreno



Brina Cabrera

Credentialing Manager

Antje Rivera

Senior Account Managers

Julie Shumate, Michelle Torres, Bridget Sparks, Patrick Romeo

Technology Consultant

Ken Renton


Meet Our President

Brina Cabrera is President/Co-Founder of MGSI. With over 30 years of experience in medical claims and receivable management, she provides unique and expert management of the staff.  Throughout her career, Ms. Cabrera has developed a well-earned reputation for significantly reducing outstanding receivables and improving cash flow in private healthcare practices.  Her unique understanding and knowledge of the Allscripts PM and Tiger and many other practice management systems allows her to effectuate operational policies and procedures to streamline the work process in both the physicians' offices and the offices of MGSI allowing for higher productivity.

Meet Our C.E.O.

Mr. Maniscalco a co-founder of MGSI and a 1975 graduate of the University of South Florida. Mr. Maniscalco has twenty six years’ experience in running nationwide medical practice management companies with medical receivables and collections on behalf of our Clients exceeding $300 million annually. Mr. Maniscalco has also served as Vice Chairman of the Board of First Bank & Trust Company; an FDIC insured state and federal chartered commercial bank, CEO of First Banc Mortgage Corporation that had annual loan originations in excess of $35 million dollars and also has served as COO of two Healthcare Technology Companies with annual revenues in excess of $60 million. Mr. Maniscalco has also participated in the acquisition, development, management and sale of over $150 million of real estate projects.

Mr. Maniscalco also now serves as COO and is a board member of Lancet Indemnity, RRG.

Meet Our C.F.O.

Mr. McMahon is a graduate of the University of San Francisco.  Mr. McMahon has been the Chief Financial Officer of MGSI since 2001. Mr.McMahon has also served as Chief Financial Officer for several companies in the healthcare market including Cortex Communications, a Medical Continuing Education and Communications Company, Access Healthcare, Inc. a manufacturer of laboratory information systems, and Wellmark a   medical billing and information company.

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