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ASG's Leadership
About ASG’s Leadership Team
Our leadership team is committed to delivering on the vision of ASG: to create solutions that fuel business transformation and enable our customers to seize the opportunities of the Information Technology (IT) economy.
Sara Singh M.D., FAPA
President & Chief Executive Officer
Dr. Sara Singh is certified with American Board of Internal Medicine and American Board of Psychiatry and Neurology. She is an active member of Health Information and Management Systems Society. Dr. Singh has spent the majority of her professional career in senior leadership roles with health care organizations…
Mandeep Singh PMP, CISM
Chief Operation Officer
Mandeep Singh, COO and CTO of A Square Group, is an ITIL expert and certified CIO. He excels in leading large organizations, particularly in healthcare and technology, towards modern and efficient structures. With a focus on enhancing care quality and transparency, he has successfully directed multiple government…
Geoffrey Xiao
Senior Vice President, Digital Transformation
Geoffrey Xiao is a seasoned leader in AI/ML-based SaaS solutions and MLaaS architectures. He co-develops technical strategies, maintains an innovative roadmap, and supports client modernization projects. With a background in software engineering and AI/ML-based products, Geoffrey holds an MBA and a Master of…
Patrick “Dean” Papa
VP, DoD, DHS and Intelligence, Growth & Delivery
Dean Papa has 20+ years of global business and technology leadership. He specializes in application and infrastructure consulting, transformation, modernization and migration, data center exit delivery, and cloud engagements. With expertise in government and Fortune 100 projects, Dean excels in strategy…
Lisa Carr, SHRM-CP, PHR
Director, Human Resources & Support Services
Lisa Carr is ASG’s Support Services director with 25+ years of HR expertise. She oversees operations and specializes in Employee Relations, Benefits, Recruiting, Compensation, and Process Improvement. She also manages facilities, IT support, payroll, and contracts.
Anchulee Raongthum, MBA-HCM, MSIDT
Director of Outreach, Education & Support
Anchulee Raongthum leads learning & development and empowers cross-functional teams to excel in healthcare outreach, technical support, Marketing, Outreach & Education Support, and program innovation. With 20+ years of experience, she has a successful track record in business development, marketing, and program/project management for government health…
Zach Main, PMP
Leader of ASG’s Data Analytics Practice
Zach Main has over 20 years of experience in Federal and State government markets, including over 15 years of specialization in delivering large scale projects, building elite teams and building relationships with executive decision makers. He has a reputation for handling troubled projects and managing very difficult stakeholders…
Karl Laubengayer
Jeff Sutton
Program Manager
Jeff Sutton is a Senior Business Leader with 40+ years of IT knowledge and experience supporting multiple Government Departments (DHS, DOD, DOJ and DLA), and Fortune 500 Commercial Clients globally. He has a proven track record for success, utilizing his years of experience, high-level of customer support…
Rick Peterson
Cybersecurity Programs Oversight
Rick is a seasoned cybersecurity professional with a proven track record of developing and implementing comprehensive security strategies. Throughout his career, he has successfully led high-impact programs that have significantly improved the security posture of major organizations. Known for his strategic vision and collaborative leadership style, Rick aligns cybersecurity initiatives…
