Martha's Ranch Staff

Blanca Quiroz

Volunteer Coordinator

Blanca manages our volunteer organization, from gathering volunteer applications to staffing events and running internal communications. She’s also an all-star admin and helps our ED and board stay coordinated with all the building going on at the Ranch.

Natasha Austin

Executive Director

Natasha manages the project schedules for all development at the ranch and oversees the creation of fundraising and public relations campaigns. She’s also an event-planning virtuoso. The ED reports to our board on the progress of all projects and any changes to the project budget.

Tayten Ellis

Animal Program Manager

The Ranch features many different animal programs. From educational initiatives for visitors to feeding and care plans, Tayten does it all. She coordinates animal needs to the other Ranch staff to ensure everyone is healthy and happy.

The Board

Kimberly Radaker Bays


Kimberly Radaker Bays has been managing and overseeing Exponential Property Group and its associated companies, with a focus primarily on multifamily Real Estate, for the past seven years. Prior to starting her real estate career Kim was a consultant with over ten years of experience in virtually all areas of qualified retirement plan design and administration. Kim is a graduate of the University of Iowa with a major in finance and concentrations in accounting and economics. She lives with her husband Matt, twin autistic sons, James and Nathan, and her step-son Jett in Southlake, Texas.

Matthew Bays

Chair of the Board

Matthew Bays is the Chief Executive Officer of Exist Multifamily and has a varied background in sales, entrepreneurship, and business development. He spent his early career in technology sales and account management for Dell Computer where he distinguished himself by exceeding sales targets and driving team performance. Matthew has his bachelors from the University of Texas at Austin and his MBA from Southern Methodist University Cox School of Business and currently lives with his wife, Kimberly Radaker Bays, in Southlake, Texas.

Dr. W. Pierre Robert III

Board Member

Dr. W. Pierre Robert III was born and raised in Beaumont, Texas. Being the namesake son and grandson of two pediatricians proved to be a real challenge. It was only after completing college, obtaining a BBA in Finance at Lamar University, and working in the banking industry in the early 1980’s that he realized his true calling was in the medical field. He graduated from UTMB Galveston medical school in 1991 and completed a three-year residency in Pediatrics there. He is board certified in Pediatrics and is a Fellow of the American Academy of Pediatrics. He joined Grapevine Pediatric Clinic in August 1994 and has been there in private practice ever since. He has four grown children and enjoys DIY projects around the house, playing golf and scuba diving in his spare time.

Nate Roberts


Nate Roberts is an advisor and consultant to businesses and individuals. He oversees the operations of Lifetime Tax Advisors, Inc. He is licensed as a Certified Public Accountant in the State of Texas and is a member of the American Institute of Certified Public Accountants. Nate began his career at Deloitte, a Big Four International Accounting Firm. He then joined a firm providing financial services to families and their businesses prior to joining Lifetime Tax Advisors, Inc. He has a B.A. & MPA from The University of Texas at Austin and is a Certified Public Accountant (CPA) – Texas State Board of Public Accountancy.

Kevin Kelpe

Board Member

Kevin Kelpe is a user experience and brand strategy consultant living in Park City, UT. He graduated from business school at the University of Idaho and studied design at Full Sail University in central Florida. Kevin currently serves as Board Chair of the Kole Wright Memorial Foundation, and in 2017 he served as Communications Director for Unshackled and Flourish Bakery, a non-profit life and job skills training program in Salt Lake City. Additionally, Kevin has served as a board member and board chair for multiple non-profits in the mountain west. He is an avid mountain biker, painter, and home renovator, and currently lives in the Wasatch Mountains with his two cats, Gutter and Binx.