Past Employer Biographies

Humana: How to Price a Medicare Advantage Plan, 10/7/2020

Liz Horstmeier

Liz Horstmeier is an FSA living in Louisville, KY. Liz graduated from UW-Madison with a double major in Act Sci and RMI. While at UW Liz was the President of the UW Actuarial Club and helped start the mentorship program. Liz’s family is still in Madison, and she loves coming back to campus for football games, terrace hang-outs, and cheese bread at the Farmers Market.

Rachel Rush

Rachel Rush is an ASA (soon to be FSA) working in Medicare Advantage Pricing while working for Humana in Louisville, KY. Rachel graduated from UW-Madison in 2017 with a double major in Actuarial Science and RMI. While on campus she participated in the Act Sci Club and Women in Business (WIB) organization. She has recently passed her final SOA exam, so in her newly found free-time, Rachel will be going on lots of long bike rides and planning all her future travels.

Eric Deterville

Eric Deterville is an actuarial analyst who provides analytical support for Humana’s Home Care strategy. Eric moved to Louisville, KY in 2016 after graduating from the University of Wisconsin. While in Madison, he could usually be found at either the terrace hanging with friends or the Kohl Center cheering on the Badger hockey team.

Church Mutual: Covid-19 and the Impact on the Commercial Property and Casualty Insurance Industry, date 10/14/2020

Cassius Noskowiak

Actuarial Analyst

Cassius (Cash) Noskowiak joined Church Mutual as an intern in June of 2018 working mostly with Business Intelligence team developing dashboards for the Sales, Underwriting, and Actuarial teams. In March of 2019 he transitioned the Actuarial Ratemaking team and has been working on semi-annual indications, daily ratemaking tasks, and support for the transition to our new policy administration system. Cash earned a bachelor’s degree from the University of Wisconsin -Madison in Statistics with an Actuarial Science emphasis in December of 2018. 

Steve Rominske, FCAS, CERA, MAA, AU, CPCU

Senior Vice President, Chief Actuary and Chief Risk Officer

Steve Rominske joined Church Mutual in 2011. Prior to that, he served in leadership roles at Wausau Insurance/Liberty Mutual and the St. Paul Companies, and as a consultant for Tillinghast. 

Rominske earned a bachelor's degree with honors from the University of Wisconsin — Madison, where he majored in economics and mathematics. Rominske has earned the following designations: Fellow of the Casualty Actuarial Society (FCAS), Chartered Enterprise Risk Analyst (CERA), Associate in Underwriting (AU), and Chartered Property Casualty Underwriter (CPCU).  He is a Member of the American Academy of Actuaries (MAAA).

Rominske has served on the Casualty Actuarial Society (CAS) Membership Advisory Panel since 2010. He is a Board member and current Chairperson for Mutual Re.  Rominske participates on the Risk Management Committee for The Actuarial Foundation. He also is a past participant of the Board of Governors for the Michigan Workers' Compensation Placement Facility and Compensation Advisory Organization, the Wisconsin Compensation Rating Bureau Actuarial Subcommittee, the University of Wisconsin — Madison Co-Curricular Learning Board (including a term as board chairman in 2008-2009), the CAS Regional Affiliates Committee and the Twin Cities Actuarial Club (including a term as president in 1999-2000).

Stephanie I. Lynn, FCAS, MAAA, ARM

Enterprise Risk Management Senior Director - Actuary

Stephanie Lynn joined Church Mutual in May 2014.  She initially worked in Ratemaking and Corporate Actuarial supporting reserving, pricing of large accounts and groups, and was instrumental in building our first economic capital model.  Stephanie began leading the Enterprise Risk Management team in April 2017.  Stephanie and her team are responsible for corporate insurance, reinsurance, the risk management framework, exposure management, economic capital model, business continuity management, and ERM related regulatory reporting requirements.  Prior to joining Church Mutual, Stephanie served in various actuarial roles for Towers Watson and Liberty Mutual.


Stephanie has a Bachelor of Business Administration degree from UW-Madison, with majors in actuarial science and mathematics.  Stephanie is a Fellow of the Casualty Actuarial Society, a Member of the American Academy of Actuaries, and an Associate in Risk Management.

EY: Virtual Teaming and Projects in Actuarial Advisory Services, 10/15/2020

Shiring Xing, FSA

Shiring Xing is a Senior in the Insurance and Actuarial Advisory Services practice of EY FSO with experience in actuarial modeling, transformation, managed services, and predictive analytics.


  • Provided training for 15+ offshore actuaries and data scientists on GGY AXIS modeling and US regulations

  • Developed GGY AXIS models for annuity products including Registered Index Link Annuity (RILA), Fixed Index Annuity, and Fixed Annuity

  • Developed replicating tools for STAT/ GAAP reserve and cashflow for Fixed Index Annuity products.

  • Built GGY AXIS models for a conversion project from MG ALFA and PolySystems on a large insurer’s Fixed Index Annuity products .

  • Supported the transformation process for a major insurance company, including business and data requirement documentation, and process flow design.

  • Developed a retirement income forecast model using predictive analytics and tree regression in R and GUIDE

Beena Rosemary

Senior, Insurance and Actuarial Advisory Services

Beena Rosemary is a Senior in Ernst & Young LLP’s Insurance and Actuarial Advisory Services practice, with a background in reserving and specialized knowledge in process automation, analytics and solution architecture. She has been with EY since 2013, having started as intern with EY’s Data and Analytics practice. She joined the Insurance and Actuarial Advisory Services practice in 2016, and has worked with commercial and personal lines insurance companies, reinsurance companies, and corporations with self-insured exposures.  


  • Loss reserve analyses for property/casualty insurance coverages including:  Workers’ Compensation, Medical Malpractice and Professional Liability, General and Automobile Liability, and Construction Defect

  • Statutory and regulatory reviews of EY’s property and casualty insurance clients

  • Led design reviews for transformation projects, as well as building scalable process automation solutions for EY’s internal actuarial reserving process 

  • Design, build and implementation of a model to assess gender wage disparity for EY’s clients

  • Worked with EY’s Neurodiversity Center of Excellence team, training and engaging resources for actuarial transformation projects and model builds. She continues to provide training for junior actuarial analysts.

Margie Rosenberg, 10/20/2020

Margie Rosenberg, PhD, FSA is the Assurant Health Professor of Actuarial Science Professor at the University of Wisconsin-Madison.  Margie’s research interests are in the application of statistical methods to health care, and applying her actuarial expertise to cost and policy issues in health care.   Her recent research involves linking social determinants to outcomes such as (i) assessing the impact of delayed attention to oral health issues on emergency department visits and (ii) assessing the impact of unhealthy behaviors on perceived health status and predicting individuals with persistent high expenditures. Prior to her starting on her academic career, Margie worked as an individual life pricing and product development actuary for Allstate Life Insurance Company in Northbrook, IL.  

Securian: Group Life Insurance - Anti-Selection Risk Management and COVID-19, 10/26/2020

Melanie Robbins, FSA, MAA, CERA

Melanie Robbins, FSA, MAAA, and CERA, has been at Securian Financial since graduating from UW-Madison in May 2016. Melanie works as an actuary on the Affinity Solutions Development Team, supporting product development and strategic projects for the Group and Financial Institution Group markets.

Matt Zuber, FSA, CERA

Matt Zuber, FSA and CERA, graduated from UW-Madison in December 2012 and has been with Securian Financial since. Matt works as an actuary on the Group Life Case Underwriting Team, assisting Case Underwriters in analyzing and managing the risk considerations of the more dynamic and complex Group cases.

Willis Towers Watson: Retirement Consulting and Current Risks, 11/10

Ashley Lederman, FSA, EA

Senior Associate, Retirement

Working at Willis Towers Watson since 2013

UW-Madison alumna

Ben Mitchell, FSA, EA

Senior Associate, Retirement

Working at Willis Towers Watson since 2015

University of Iowa alumnus

Dan Hougard, ASA

Associate, Retirement

Working at Willis Towers Watson since 2017

UW-Madison alumnus

L Lindblom

Analyst, Retirement

Working at Willis Towers Watson since 2019

UW-Madison alumna

PWC: A Discussion of Healthcare/Health Insurance in the US with a Demo of Actuarial Analysis, 11/16

Nate Jacoby, ASA, MAAA

Nate Jacoby, ASA, MAAA is a Director in our Group & Health practice at PwC.  He is a 2009 UW grad.  While at UW, Nate majored in Actuarial Science, Statistics, Risk Management & Insurance.

Jordan Bernhardt, ASA, MAAA

Jordan Bernhardt, ASA, MAAA is a Manager in our Group & Health practice at PwC.  He is a 2014 UW grad.  While at UW, Jordan majored in Actuarial Science and Risk Management & Insurance.

1250F Grainger Hall

975 University Avenue

Madison WI 53706 

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