Kem Tolliver, FACMPE, CPC, CMOM

Kem Tolliver a public speaker, co-host of the RevDive podcast and co-author of Revenue Cycle Management: Don't Get Lost in the Financial Maze. Medical practices managed by Kem have received MGMA Better Performer distinctions in the areas of A/R and collections. 

As president of Medical Revenue Cycle Specialists, LLC, she and her team lead healthcare organizations in practice startup and transformation, revenue cycle improvements, clinical documentation improvement, educational programming, payer contracting, HIT software development, EHR/PM software customization, risk management and telehealth integration. 


Shawntea “Taya” Gordon, CMPE, CMOM

Taya obtained her Executive MBA in Healthcare Management at Creighton University and as a subject matter expert in several facets of healthcare management and process optimization, she’s held senior level executive management positions in private practices, collaborative institutes, and national care coordination organizations. Taya now educates and consults on all areas of healthcare operations including revenue cycle integrity, workflow efficiency, denial prevention, and legislation.

Taya serves as a proud member of the MGMA’s Government Affairs Council and co-authored the MGMA Best-Selling publication, Revenue Cycle Management: Don’t Get Lost in the Financial Maze. She is also the co-host of the RevDive podcast and former President of the HIMSS Nebraska Chapter, as well as a 2019 Midland’s Business Journal as a ‘40 Under 40’ Executives & Entrepreneurs Award Recipient. As a self-proclaimed nerd, Taya’s favorite topics include revenue cycle management, health policy, coded puzzles and, in her free time, video games.


Dan Marino, MBA, MHA

Managing Partner
Lumina Health Partners

Dan Marino specializes in shaping strategic initiatives for healthcare organizations and senior healthcare leaders in areas that include population health management, clinical integration, physician alignment, and health information technology. With more than 20 years of consulting experience, Dan’s commitment to healthcare quality and care excellence allows him to develop meaningful relationships with clients and guide them through transformative change. While serving as executive vice president of GE Healthcare Partners, Dan led the national consulting practice in the areas of population health, organizational strategy, health system transformation, data analytics, and health information technology. Prior to GE, as president of Health Directions, he supported numerous organizations across the country in developing and activating organizational strategies in population health, medical group development, service line growth, and financial improvement.


Lucy Zielinski

Managing Partner
Lumina Health Partners

Lucy Zielinski specializes in helping health systems and medical groups achieve top financial and operational performance. She achieves this optimization through physician-hospital alignment, which includes clinically integrated networks, strategic planning, medical practice transformation, coding and revenue cycle improvement, and physician leadership training. With more than 25 years of experience, Lucy believes that employee development is a company’s greatest investment. Prior to co-founding Lumina Health Partners, Lucy held positions as vice president for GE Healthcare Partners and founder/president of a practice management consultancy.


Christine Fontaine

Growth Enablement Solution Strategist
Christine Fontaine is currently a Growth Enablement Solution Strategist at Waystar. As part of her role, she assists healthcare providers identify solutions to help optimize their revenue cycle. Waystar provides next-generation, cloud-based technology that simplifies and unifies the healthcare revenue cycle. Christine has been in the healthcare finance field for over 20 years, in both physician and hospital business offices and is a Certified Healthcare Financial Professional. She has held management positions at Memorial Sloan Kettering, Montefiore Medical Center, Cornerstone Treatment Facilities and Shore Health System/University of Maryland Medical System.



Nathan Kennedy, Jr. CHC, CPC, CPPM, CPC-I, CPB, CPMA

Consultant, Provider Outreach & Education
NGS, an Elevance Health Company

Nathan L Kennedy, Jr. has been with Medicare for 34 years. During that time he has worked in Claims, Appeals, and Provider Outreach and Education (POE). Nathan has been in the POE area now for 23 years working with providers to help them understand Medicare billing and policy.


Cathy Harte, MBA, FACMPE

System Director of Population Health
Southern Illinois Healthcare


John Giertz, CMPE

Vice President of Physician Services
JCH Healthcare


Sarah J. Hartley, MHA, RHIA, CDEO, CRC

System Director of Ambulatory Risk Adjustment and Clinical Documentation Integrity
NorthShore – Edward-Elmhurst Health

Sarah has more than 22 years of experience in healthcare and has served in roles such as HIM director, Inpatient and Ambulatory CDI director, Provider Based Coding and Education Director and Facility Coding Director. She has also been an adjunct instructor within the HIT/HIM department at her local community college and Fisher College in Boston, Massachusetts for the last 10 years. During her career, she has been responsible for initiating CDI programs in both the inpatient and ambulatory settings, developing education, provider engagement facilitating the ambulatory CDI efforts through multi-disciplinary collaboration to improve the quality and completeness of documentation and hierarchical condition category (HCC) coding; evaluation, auditing and education of provider-based coding, facility coding and medical record functions.


Lauren Jones

Director of Product Growth and Client Success
Simpliphy, Inc.

Previously a practice manager and having worked in healthcare since 2004, Lauren has a unique background with multiple specialties and extensive experience in benchmarking. After applying benchmarking data to her previous practice, she exceeded their budgeted annual revenue goal by $1.12M in 10 months while also improving other areas of the practice.  Shortly after that, she wanted to help other healthcare leaders become knowledgeable in operationalizing and analyzing industry data and have the same success as she did, which led her to join MGMA, where she became their Senior Healthcare Data Strategist and eventually oversaw the Data Strategy team.

During COVID-19, Lauren saw an opportunity that lacked in the market for organizations to be able to know what is occurring in the industry in real-time.  Through Simpliphy’s cutting-edge software and ability to do this, she joined their team in January of 2023 to assist with continued product growth of their software and the launch of their real-time benchmarking features. 



Andrew Walker

Vice President of Product Growth & Client Success
Simpliphy, Inc.

Simpliphy is a company that specializes in bringing simplicity and real-time data analysis to physician compensation through its innovative software offerings. Prior to joining Simpliphy in 2022, Andrew served as the National Director of Organizational Membership at Medical Group Management Association (MGMA), where he led the teams focused on the overall growth and engagement of MGMA’s membership and data product offerings. He served in leadership roles with several healthcare organizations in the areas of physician recruitment and contracting, building a strong knowledge base around physician  compensation  arrangements and benchmarking.

Andrew and his wife, Heather, live in Denver, CO, where they spend their time enjoying Colorado’s endless recreational offerings with their three children.