The Santoro & Co Team
Mario Santoro
Director - CPA
Mario Santoro is the Principal and a Director of Santoro & Co, with over 40 years of experience as a leader in medical tax accounting. As a Registered Tax Agent and CPA, Mario has been a constant advisor to Sydney’s healthcare community, steering practices through the introduction of GST and into the current landscape of 2026 payroll tax and Service Trust compliance.
Mario specialises in the long-term wealth protection of medical specialists. His expertise in business restructuring and SMSF administration ensures that practice owners have a robust financial foundation that survives legislative shifts.
Expertise: Medical Practice Restructuring, SMSF Strategy, High-Net-Worth Tax Planning.
Sector Focus: Surgeons, Practice Owners, and Career Medical Officers.
Simon Grieco
Accountant - ASA
Simon Grieco is a Director at Santoro & Co and has been a driving force behind the firm’s specialist medical focus for over 16 years. Working in close partnership with Mario, Simon has built a reputation for being a highly responsive and proactive advisor to the modern medical professional.
Simon specialises in navigating the unique financial pressures faced by high-income specialists. From managing payroll tax risks to optimizing tax structures for medical professionals, Simon ensures that every client receives niche expertise tailored to their specific discipline. As a Xero Certified Advisor and tax agent he leverages the latest cloud technology to provide real-time financial clarity to busy clinicians.
Expertise: Payroll Tax Compliance , PSI Management, Medical Cloud Accounting.
Sector Focus: Anaesthetists, Radiologists, General Practitioners, and Dentists.
Gianpaolo Santoro
Accountant
Gianpaolo is a Senior Accountant at Santoro & Co, bringing 8 years of specialised expertise to our medical accounting team. Throughout his near-decade with the firm, Gianpaolo has become a trusted advisor for General Practitioners, Registrars, and Medical Specialists navigating the Australian tax system.
Gianpaolo is a Senior Accountant at Santoro & Co, bringing 8 years of specialised expertise to our medical accounting team. Throughout his near-decade with the firm, Gianpaolo has become a trusted advisor for General Practitioners, Registrars, and Medical Specialists navigating the Australian tax system.
Role: Medical Tax Compliance, Financial Reporting, Xero Implementation.
Role: Medical Tax Compliance, Financial Reporting, Xero Implementation.
Giovanna Barbuto
Bookkeeper
Giovanna is a dedicated Accountant at Santoro & Co, providing specialised financial support to our medical and professional clients for the past 7 years. Her tenure at the firm has allowed her to develop a deep expertise in the medical industry.
Giovanna specialises in the technical preparation of complex financial statements and Business Activity Statements (BAS) for General Practitioners and Specialists. She is highly proficient in Xero cloud accounting, helping our clients transition to digital systems that simplify their record-keeping while ensuring every clinical deduction—from professional indemnity to specialised equipment—is captured and claimed.
Role: Medical Tax Compliance, Financial Reporting, Cloud Accounting Specialist.
Expertise: GST for Medical Practices, Xero Integration, Specialist Deductions.
Carla La Motta
Senior Accountant
Carla is a highly distinguished Chartered Accountant who has been a member of the profession since 1981. A graduate of the University of New South Wales (UNSW) with a Bachelor of Commerce, Carla brings over 30 years of elite experience in accounting, taxation, and systems to the Santoro & Co team.
Her extensive career spans high-stakes industries including banking, insurance, and engineering, giving her a unique perspective on complex financial systems and tax structures. For the past twelve years, Carla has focused her expertise on public practice, where she specialises in providing rigorous, systems-driven accounting solutions for our medical and professional clients.
Qualifications: Chartered Accountant (CA), Bachelor of Commerce (Accounting, Finance & Systems) – UNSW.
Experience: 30+ Years in Taxation & Systems.
Specialist Sector: Complex Corporate Tax, Engineering & Medical Systems, Banking-Grade Compliance.
Karen Santoro
Office Manager
Karen is the Office Manager at Santoro & Co and has been the cornerstone of our practice operations for over 20 years. Her two decades of dedicated service have made her an expert in the unique administrative landscape of the Australian medical sector.
Karen acts as the primary liaison between our medical clients and the ATO, ensuring that every lodgement, practice registration, and compliance requirement is handled with absolute precision. Her deep history with the firm means she often understands the evolution of our clients' practices as well as they do, providing a level of continuity and personal service that is rare in modern accounting.
Role: Practice Operations, ATO Liaison, High-Level Client Coordination.
Expertise: Medical Practice Administration & Compliance Workflows.
Lia Morgan
Undergraduate Accountant
Lia Morgan is an Undergraduate Accountant at Santoro & Co and a valued member of our professional team. Currently completing her degree in Accounting, Lia applies her academic rigour to the practical, real-world complexities of medical taxation and practice management.
Working under the direct mentorship of our Senior Directors, Lia assists in the meticulous preparation of financial records and cloud-based bookkeeping for our specialist clients. Her role is integral to ensuring that our "digital-first" clients—including young Registrars and tech-forward General Practitioners—benefit from seamless, real-time data integration and modern reporting standards.
Role: Undergraduate Accountant & Client Support.
Education: Currently pursuing a Bachelor of Accounting
Jana Pantelas
Office Manager
Jana is the Office Manager at Santoro & Co and has been the operational heart of the firm for over 10 years. With a decade of dedicated service to our medical and professional clients, she ensures that every practice transition, ATO lodgement, and client enquiry is handled with seamless efficiency.
Specialised in the administrative complexities of the healthcare sector, Jana manages the essential "behind-the-scenes" workflows that allow our Directors and Accountants to focus on high-level strategy. Her long-standing tenure at Santoro & Co provides our clients with a consistent, familiar point of contact who understands the history and specific needs of their medical practice.
Role: Practice Operations, ATO Liaison, Client Relationship Management.