MEET THE EXPERTS
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Darren Wethers
Chief Medical OfficerATRIO Health PlansDarren Wethers is a board-certified internal medicine physician and certified physician executive.
He graduated from Morehouse College, Northwestern University Medical School and completed internal medicine training at Emory University School of Medicine before establishing an internal medicine practice in the St. Louis, Missouri area, becoming a “Top Doctor” Honorée several years running. Dr. Wethers was the medical staff president at SSM St. Mary’s Health Center in 2006-07 and chaired the facility’s Credentials committee 2007-11.
In 2011, Dr. Wethers began a career in administrative medicine, servings as a medical director with Coventry Health Care and Aetna, vice president of clinical operations at Blue Cross Blue Shield of Arizona and is now at Atrio Health Plans, where he serves as chief medical officer.
Dr. Wethers is a member of the American Association for Physician Leadership, Fellow of the American College of Physicians, member of Alpha Phi Alpha and Sigma Pi Phi fraternities; he is a board member and immediate past chairman for Gamma Mu Educational Services (GMES) and is a board member of Northwestern University Medical School Alumni Association, for which he serves as president-elect and co-chair of the Inclusion and Allyship committee. -
Jonique Dietzen
Payment Integrity DirectorCareOregonWith over 18 years of experience in healthcare billing and finance, I am a certified professional coder dedicated to ensuring accurate claims and proper reimbursement for providers. Having worked extensively on the provider side in finance and revenue cycle, I bring wealth of knowledge to the table, particularly in processing and payment integrity.
Throughout my career, I have gained a comprehensive understanding of billing challenges from both perspectives. This unique insight drives my commitment to improving billing practices and advocating for provider education. I continue to leverage my expertise to enhance billing processes and support providers in navigating the complexities of healthcare finance. -
Helen Liu, Pharm.D.
VP of Pharmacy OperationsATRIO Health PlansDr. Liu is the Vice President of Pharmacy Operations for the ATRIO Health Plans, where she manages and oversees all Part D-related operations. Dr Liu has an extensive background in clinical pharmacy, medication safety, managed care, and data outcome analysis. Before this role, she developed and implemented the inpatient Drug Use Management program at Kaiser Permanente.
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Josh Miller
Director, Payment IntegrityProminence -
Michael Devine
Director Special Investigations UnitL.A Care -
Stephanie Sjogren
Director, Coding and Provider ReimbursementEmblemHealth/ConnecticareStephanie Sjogren is a director of coding and provider reimbursement, working with payment integrity to ensure proper claims adjudication and to prevent fraud, waste, and abuse. Prior to joining ConnectiCare/EmblemHealth, she performed provider audits and education at a women’s healthcare group. Sjogren has also worked with physicians and staff to integrate and use electronic health record systems effectively and to stay in compliance with the Centers for Medicare & Medicaid Services’ rules and regulations. Her areas of specialty are payment integrity, auditing, and clinical documentation improvement.
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Erik Carter-Nadeau
Operations Manager, Provider NetworkCareOregonWith over a decade in healthcare leadership, I am passionate about fostering provider engagement and delivering strategic support to improve the health of Oregonians, particularly in rural and underserved areas. As a native Oregonian, growing up in these communities across my state has provided me with unique insights into the cultural and geographic factors that influence healthcare delivery. I am committed to leveraging this understanding to enhance quality, access, and equity in healthcare for all Oregonians.
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Eric Renteria
Senior Fraud InvestigatorL.A. Care Health Plan -
CJ Wolf
Professor and Asst. Program DirectorBrigham Young University-Idaho -
Jennifer Callahan
COOATRIO Health PlansJen Callahan is the President and Chief Operating Officer of ATRIO Health Plans. For over 20 years, Jen has established herself as a trusted thought leader who helped shape the managed care industry with her innovative ideas and expertise. Jen has dedicated her career almost exclusively to Medicare Advantage and Medicare Supplement programs.
Prior to joining ATRIO, she co-founded a field management organization, Keen Insurance Services, Inc. to create a provider-centric Medicare focused sales and distribution organization from the ground up. Prior to that, she held the position of Vice President, Medicare Product at Aetna, a CVS Health company where she oversaw the product development and implementation of Aetna’s entire Medicare portfolio supporting record breaking growth for the Medicare organization. Throughout her career, Jen has also held various leadership positions at Healthfirst and Elevance.
Jen received her Bachelor of Science degree from Fordham University and MBA from North Carolina State University. Jen currently resides in Waxhaw, a suburb of Charlotte, North Carolina with her husband, their three kids, tuxedo cat, Vivi and golden retriever puppy, Steve.
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Zeeshan Syed
Chief Executive OfficerHealth at ScaleZeeshan serves as Health at Scale’s CEO and was a Clinical Associate Professor at Stanford Medicine and an Associate Professor with Tenure in Computer Science at the University of Michigan. He was previously part of the early stage team that launched Google[X] Life Sciences (now Verily). Zeeshan is a recipient of multiple awards including an NSF CAREER award and holds a PhD from MIT EECS and Harvard Medical School in Computer Science and Biomedical Engineering, and MEng and SB degrees in EECS from MIT.
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Richelle Marting, JD, MHSA,RHIA,CPC,CEMC,CPMA
Director of Managed CareNorth Kansas City Hospital -
Joshua Preuss
Special Agent at U.S. Department of Health & Human ServicesOffice of Inspector General -
Angela Zigler
Special AgentFood and Drug Administration Office of Criminal Investigation -
Dave Cardelle
Chief Strategy OfficerAMS -
Prasanna Ganesan
CEOMachinify -
Brandon Shelton
Senior Director, Advanced Analytics LabL.A. CareBrandon Shelton is the Senior Director of the Advanced Analytics Lab at L.A. Care, the country's largest public-option health plan, where he leads teams of Data Scientists and Data Analysts to support the health plan's various enterprise domains with machine learning solutions, program impact assessments, and business intelligence deliverables. The team's contributions towards Payment Integrity savings consistently exceeds $20M per year.
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Dr. Michael Menen
Chief Medical OfficerMedReview•Former Chief Medical Officer at Optum•Bachelor of Science degree in theoretical mathematics from the University of California, Riverside•Doctor of Medicine degree from the Medical College of Wisconsin•Board-certified invasive cardiologist and a fellow of the American College of Cardiology -
Kyle Pankey
Sales & Growth LeaderCarelon SubrogationKyle Pankey has over two decades of experience working within the healthcare and payer operations, with over 10 years specifically tied in to the payment integrity space. Kyle lives in Chattanooga, TN and has served as Carelon Subrogation’s growth leader since mid-2022.
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Aaron Browder
PresidentCarelon SubrogationAaron Browder is Staff Vice President, Elevance Health and President, Carelon Subrogation, formerly Meridian Resource Company (Meridian), where he and his team are responsible for overseeing the successful implementation and execution of our clients’ end-to-end subrogation programs. With a nearly 20-year career in subrogation, Aaron possesses a deep knowledge of healthcare subrogation. He has held a wide range of management positions throughout his tenure at Meridian, most recently serving as Staff Vice President. Prior to joining Meridian, Aaron gained experience in the financial services and insurance industries with Arthur Andersen, LLP/KPMG, LLP, and Travelers Property Casualty.
Aaron holds a Bachelor of Arts degree from Indiana University and a Master of Business Administration from Butler University. He served on the Board of Directors for the National Association of Subrogation Professionals and has been a national presenter and author on issues related to subrogation.
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Matt Monyhan
Executive Director, Operations and StrategyCarelon Subrogation -
Creighton Long
Staff VP, Commercial Aligned Incentives SolutionsAnthem -
Karen Weintraub
Executive Vice PresidentHEALTHCARE FRAUD SHIELDWith 25 years of data and 20 years of healthcare experience, Ms. Weintraub is currently responsible for the design and development of the company’s healthcare fraud detection software products and services. She provides subject matter expertise on system design and workflow, business rule development, data mining and fraud outlier algorithms as well as SIU policies and procedures. Prior to joining Healthcare Fraud Shield, managed SIUs on various healthcare investigations for all commercial, Medicaid and Medicare business and claims of fraudulent activity. Ms. Weintraub received a BA in Criminal Justice from the University of Delaware and an MA in Criminal Justice from Rutgers University. Ms. Weintraub is a Certified Professional Coder for Payers (CPC-P), a Certified Professional Medical Auditor (CPMA) from the American Academy of Professional Coders, a Certified Dental Coder (CDC) from the American Dental Association, and the founder of the Hamilton, NJ AAPC chapter. She is also an Accredited Healthcare Fraud Investigator (AHFI) from the National Healthcare Anti-Fraud Association (NHCAA). Ms. Weintraub Taught CPT Coding, Fraud & Audits, and Medical Billing, Laws and Ethics and the local community college.
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John-Michael Loke
SVP, Health Plan Strategy & PartnershipsAMS -
Clay Wilemon
Chief Executive Officer4L Data Intelligence, Inc.Clay serves as CEO at 4L Data Intelligence™. He has launched over 500 new healthcare brands and holds patents in artificial intelligence and medical technologies. Clay is on the Board of Directors at Octane, a Southern California non-profit economic development organization that has helped hundreds of technology and med-tech companies get started. He a graduate of Vanderbilt University.
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Greg Lyon
Senior Fraud Advisor4L Data Intelligence, Inc.Greg is a recognized anti-fraud expert with experience in Financial Services and Healthcare Payments that includes serving as Director of Fraud Prevention at United Healthcare. His guiding principle is, “The best way to fight fraud is to prevent it.” Greg is a graduate of Colgate University and is a Certified Financial Planner.
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Matt Akromis
Vice President of SalesAMPS - ClaimInsight -
Mantha Subrahmanyam
VP of Payment IntegritySagility -
Bob Starman
SVP of Payment Integrity SolutionsSagility -
Michael Stahl
ChiropractorIndependent