MEET THE TEAM

Strategy. Innovation. Excellence.

Get to Know The Rockland Team

FOUNDER

Meet Greg Welch

Greg is the Managing Member of Rockland Consulting, LLC, a firm he founded in 2004. As a successful entrepreneur with extensive experience in the financial sector, Greg has built a career advising businesses, investors, and stakeholders on strategic growth initiatives and business development.
In addition to consulting for various companies, Greg has also ventured into land development, helping clients navigate real estate transactions including acquisition and development, financing, and disposition strategies. His diverse background in finance, entrepreneurship, and real estate has enabled him to successfully lead projects across multiple industries.
Before entering the financial sector, Greg attended McDaniel College and Old Dominion University, where he was an NCAA Division I wrestler.

COO

Meet Christian P. Calhoun

Christian P. Calhoun is the co-founder of Medical Innovation Centers of America, bringing nearly two decades of experience in healthcare technology, data science, and regulatory advisory. He leads strategic healthcare data analytics projects, supporting clients with industry challenges.
Before founding Medical Innovation Centers of America, Christian held senior positions at firms such as CSC, Peraton, and InMed Group. He also worked in government affairs, navigating HHS and the FDA. Christian earned a Bachelor’s in Quantitative Economics from Auburn University and completed postgraduate studies at the Ludwig Von Mises Institute.

MANAGING DIRECTOR

Meet Doreen Amador

Doreen Amador is a commercial banking executive with over 30 years of experience in commercial lending, credit administration, treasury management, and government-guaranteed financing. She has worked with commercial banks, loan service providers, and businesses, bringing expertise from both lender and borrower perspectives.
As Managing Director, Credit & Capital Solutions at Rockland Consulting, Doreen helps businesses become capital-ready, improve financial strategies, and navigate complex financing challenges. Her background as a banking executive, corporate controller, and USDA Chief Credit Officer enables her to bridge the gap between businesses and financial institutions.
A graduate of the ABA Stonier Graduate School of Banking with a Wharton Leadership Certificate, Doreen brings practical, experience-driven solutions to businesses, developers, and lending partners.

DIRECTOR OF ACQUISITIONS

Meet Johanna Rosenberg

Johanna Rosenberg, CEO of Billable Healthcare comes as a Partner at Rockland Consulting LLC, bringing over a decade of versatile leadership across the healthcare and homecare industries. She holds a Degree in Business Management, which laid the foundation for her extensive expertise in medical billing, corporate recruiting, mergers and acquisitions, public relations, marketing, and business development.
Johanna combines operational precision with strategic vision and is known for her keen eye in financial management and talent alignment. She is also passionate about impactful fundraising and communications—consistently driving organizational growth and community engagement.

OPERATIONS & STRATEGY

Meet John Kimmet

John Kimmet has over 20 years of leadership experience in commercial and operational roles across pharmaceuticals and telecommunications. He served as EVP of Oncology & Acute Care Marketing at Eagle Pharmaceuticals and Chairman of Acacia Pharma.
Before entering healthcare, John spent 17 years at Verizon and Vodafone in marketing, analytics, and operations. He holds a Master’s in Business Analytics from NYU, a Global Executive MBA from Duke, and has completed programs at Columbia and Kellogg.

ADVISOR

Meet Esther Corpuz

Esther Corpuz has over 30 years of experience in hospital operations and management, holding leadership roles at MacNeal Hospital (now part of Loyola Medicine) and Tenet Health Care. She specializes in business development, strategy, and external relations.
A dedicated community leader, Esther serves on multiple boards, including MacNeal Hospital and Medical Home Network ACO. She has received numerous civic awards and completed the National Association of Healthcare Executives Senior Leadership Academy. She studied Political Science at DePaul University.

ADVISOR

Meet Jason Wallace

Jason Wallace has spent two decades in the aerospace and defense industry, most notably as CEO of ADS, Inc., a military equipment and tactical gear contractor. Under his leadership, ADS reached record revenue, growth, and profitability.
Previously, Jason was VP of Sales and Operations at Sunbelt Rentals. He is a founding member of Tidewater Horns, a youth baseball organization, and serves on its board. He earned a Bachelor of Science in Business Administration from Old Dominion University and was named to the Virginia500 Power List.

ADVISOR

Meet Matthew J. Cary

Matthew J. Cary has 50 years of experience in government relations, lobbying, and marketing, with a strong focus on veteran advocacy. As the former State Director of the District of Columbia Office of Veterans Affairs, he led initiatives supporting veterans and their families.

A U.S. Army Reserve veteran, Matt also founded Veterans & Military Families for Progress and held executive roles in government relations and marketing. He holds a Master’s in Public Administration and a BA in Social Science and serves on multiple veterans’ organization boards.

ADVISOR

Meet Vivek Viswanathan

Vivek Viswanathan is a business and technology leader with 25 years of experience across sales, client engagement and digital transformation. Vivek has led global initiatives in ERP, software automation and MarTech, working with Fortune 500 companies like Intel and IBM.
An MIT Sloan alum with a Master’s in Computers, Vivek has lived and worked across the US, UK, and Singapore. As Founder and CEO of PearlRain Digital, along with his specialized team, Vivek now consults organizations on strategic digital shifts, enabling seamless adoption of technology, marketing and business innovations.

PARTNER

Medical Innovation Centers of America

With over 50 years of combined experience in revenue cycle management, advanced billing analytics and payor relations, our company stands at the forefront of the industry, offering unparalleled expertise and insight. We leverage cutting-edge technology to enhance every aspect of the revenue cycle management process, from initial patient registration to final payment reconciliation.

Our advanced billing analytics provide actionable insights that streamline operations, reduce denials, and optimize reimbursements. By integrating sophisticated software solutions and AI-driven tools, we ensure accuracy, efficiency, and compliance, helping healthcare providers maximize their revenue potential while maintaining a focus on exceptional patient care.

Visit MICA Website

PARTNER

Stern Consultants

Stern Consultants partners with rehabilitation providers to deliver smarter, more effective healthcare management. Our work is rooted in a clear mission: to improve the quality of care, support operational growth, and empower staff at every level.

With a focus on long-term success, we help organizations streamline their processes, navigate challenges, and stay ahead in a complex healthcare landscape.

By aligning clinical excellence with operational insight, we serve as a strategic partner committed to advancing both patient outcomes and business performance.

Visit Stern Consultants Website

PARTNER

Carediem Home Care​

CareDiem Home Care is a private-pay, non-medical home care franchise dedicated to helping families spend meaningful time together while ensuring their loved ones receive compassionate and professional care. Founded by Grishma Patel and Danielle Rajoo, the company was born from a personal mission to address gaps in home care services and to empower families to focus on what matters most.

Guided by the pillars of C.A.R.E. – Commitment, Accountability, Respect, and Empathy, CareDiem offers scalable, home-based franchise opportunities designed to meet the growing demand for senior care. Franchisees receive comprehensive support, including training, marketing assistance, and access to technology tools, enabling them to provide services such as hourly, live-in, and a la carte care options. By joining CareDiem, franchise owners become part of a community focused on delivering high-quality, personalized care that enhances the lives of clients and their families.

Visit CareDiem Home Care
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