The Board of Directors
Officers of the Cooperative Exchange
Pam Grosze is Vice President and Senior Product Manager for PNC Bank's Healthcare Division, which provides financial and revenue cycle management solutions for Health Plans, Third-Party Administrators, hospitals, healthcare providers, and other healthcare organizations.
Pam has spent more than 25 years in healthcare environments, developing, implementing and supporting healthcare EDI transactions for leading companies, including PNC Bank and RelayHealth. She also takes a leading role in several major healthcare industry organizations, holding co-chair and board positions, helping to drive standards and regulations for healthcare.
Pam graduated with honors with a B.S. in Computer Science from the University of Tulsa in 1986, and worked as a software developer in a variety of industries, including an accounting department, a cable television station, a mental health agency, and a defense contractor, before beginning work in healthcare at then CIS Technologies. Her career at CIS Technologies (which later became RelayHealth) advanced into a management role, where she had the opportunity to create new teams, build non-traditional teams, and manage existing teams as large as 40 people. During her tenure at RelayHealth, Pam developed claim editing, remittance posting, and clearinghouse software, and managed teams focused on claims and ERA MIS, implementation, client support, clearinghouse processing, enrollments, payer relations, and healthcare regulations.
After 17 years at RelayHealth, Pam moved to PNC Bank to continue her work building teams to support various aspects of healthcare transaction processing. She created PNC's Payer Services and Enrollment teams. She is now in Product Management, building healthcare products instead of teams, and is focused on PNC's remittance advice products, while also maintaining the role of industry liaison for PNC.
Pam is actively involved in multiple healthcare industry committees, holding leadership roles in several. She has been involved with ASC X12 since 2000 and is currently the co-chair of the Payments (835) workgroup. Pam is very active with the Workgroup for Electronic Data Interchange (WEDI), and holds a Board Position there, along with being co-chair of the Data Exchange Workgroup and Remittance Advice and Payments Subworkgroup. She is very active with CAQH CORE, and with The Cooperative Exchange as well, holding the position of X12 Liaison.
Jennifer Nereu is a Senior Vice President of Strategic Partnerships with Jopari Solutions. Jennifer has 20 years of experience in developing and executing high-impact strategic partnership initiatives. Proven track record of driving revenue growth, expanding market reach, and enhancing brand recognition through the establishment and management of key accounts across a variety of industries. Exceptional leadership skills, adept at building and leading cross-functional teams to achieve ambitious business goals. Experienced at crafting innovative product enhancements, negotiating complex agreements, and fostering mutually beneficial relationships with industry leaders.
Eric Grindstaff served in various capacities in the healthcare industry for over 20 years. He is currently a senior business analyst and compliance analyst for Allscripts Payerpath clearinghouse where I have worked in EDI for the last 12 years monitoring federal and state legislation, regulation, and policy, including Medicare and Medicaid, and commercial insurance communication channels for changes impacting electronic healthcare clearinghouse, identifying scope and critical elements to guide development efforts.
In his capacity with Allscripts, he participated with the Cooperative Exchange, WEDI, CAQH CORE, and served as the chair and co-chair of the Transactions, Code Sets, and Identifiers Workgroup for the North Carolina Healthcare Information and Communications Alliance, Inc. from 2011 to 2020. Prior to working at Allscripts, Eric served as a Consumer Protection Specialist with the Managed Care Patient Assistance Program (MCPA) in the NC Department of Justice, a Senior Process Analyst with Mid Atlantic Medical Services Inc., and a High-Risk Intervention Mental Health Technician with the Homecare Management Corporation following graduation from the University of North Carolina at Chapel Hill with a Bachelor of Arts in Psychology.
Tina Greene is Senior Regulatory Affairs Consultant at Enlyte/Mitchell and has over 30 years of experience in the Property & Casualty, Workers' Compensation industry. This prior experience includes 21 years with Florida's Division of Workers' Compensation, where she was involved in administrative rule writing, electronic data interchange (both medical and claims) and numerous other system program areas. Her current role provides guidance on national and state regulatory compliance for electronic data interchange standards which directly impact numerous products and processes.
Tina serves the industry in numerous leadership positions including national industry standard making organizations. She is Chair of the International Association of Industrial Accidents, Boards and Commissions (IAIABC) EDI Medical Committee (including eBill) as well as a member of the EDI Council. Working with the IAIABC for over 20 years has allowed invaluable relationships to form with many states. Additionally, she co-chairs the Workgroup for Electronic Data Interchange (WEDI) Property & Casualty eBill Subworkgroup. Other positions include P&C subject matter expert to X12; Secretary to the X12 Code Maintenance Group (Claim Adjustment Reason Codes). In addition to serving on the Board, Tina is also co-chair of the Cooperative Exchange Cybersecurity and Privacy Committee.
Cyndi Padilla is an accomplished healthcare professional with extensive experience managing corporate compliance and aligning operations with federal and state regulations. At Ochsner Health, she led key compliance initiatives, implemented risk management strategies, and collaborated with stakeholders to foster a culture of accountability and regulatory excellence within one of the region's largest health systems. Cyndi began her career at Compliance Partners, a healthcare technology startup in New Orleans, now known as Performance Health Partners, where she developed foundational expertise in healthcare innovation. She holds an MBA from Louisiana State University Shreveport and is a Certified Healthcare Compliance Professional (CHC), a respected designation that demonstrates her expertise in healthcare regulations, compliance program management, and risk mitigation, highlighting her ability to help organizations navigate complex regulatory environments while maintaining operational integrity. Additionally, Cyndi is a Certified Lean Practitioner, emphasizing her focus on efficiency and continuous improvement.
Currently, Cyndi drives regulatory and compliance efforts at TriZetto, a Cognizant Company, where she monitors industry trends, ensures regulatory alignment, and supports business operations in the rapidly evolving healthcare industry.
Rhonda is a Director of Strategic Product at Optum with over 25 years experience in the healthcare industry with the last 11 years focused on Product Management. She offers the unique ability to bring together both strategic business and technical expertise to solve customer and industry problems to include the migration to 5010, NPI and ICD-10. For the HRSA Uninsured Program on behalf of Optum, UnitedHealthcare and the Federal Government to administer claims payment for COVID Testing and Treatment of people without health insurance, Rhonda led the tactical execution of EDI Clearinghouse services for transaction intake with integrated transaction delivery to UHC for full roll-out from initial discussions to go-live in six weeks. Recognizing the strategic vision to accelerate interoperability, Rhonda was the driver for CAQH CORE Certification for both Optum and UHC with transition to consultative expert for subsequent certifications for the Enterprise. Rhonda has extensive expertise around the HIPAA Transactions and processing while keeping a thumb on emerging technologies. She is also a member of the Workgroup for Electronic Data Interchange (WEDI).
Crystal Ewing is the Vice President of Product Management at Waystar, bringing more than 25 years of experience in healthcare technology, product strategy, and innovation. Throughout her career, she has led high-profile industry initiatives and guided organizations through complex regulatory and technological transformations, including 5010, ICD-10, and the modernization of revenue cycle management. Crystal has served as a board member of the Cooperative Exchange since 2016.
Crystal is a forward-thinking leader recognized for solving complex healthcare challenges through the strategic use of technology, data, and artificial intelligence. Her expertise lies in designing intelligent, unified solutions that streamline processes, ensure compliance, and drive measurable improvement in healthcare operations and financial performance.
In her current role at Waystar, Crystal leads cross-functional teams focused on creating innovative, data-driven products that simplify and elevate the revenue cycle experience across the healthcare ecosystem.
Within the Cooperative Exchange, Crystal serves as Past Chair and is the current Chair of the Policy and Procedures Workgroup and the Marketing and Communications Workgroup, where she continues to advance the organization’s mission of promoting standardization, efficiency, and collaboration across the healthcare clearinghouse industry.
Crystal is also an active and long-standing member of X12.org (and former co-chair within the organization), a member of HL7, and an engaged participant and former board member of WEDI (Workgroup for Electronic Data Interchange). Through these roles, she continues to influence and support national efforts focused on interoperability, compliance, and innovation in healthcare data exchange.







