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Joe O’Hehir, Chief Executive Officer

Joe O’Hehir, Chief Executive OfficerJoe O’Hehir was hired by the Whistlestop board in October of 2008. He is a seasoned executive with over thirty years of management experience. Since 1992, Joe has been providing executive leadership to nonprofit organizations throughout the San Francisco Bay Area. In 2006, Joe received the Center for Nonprofit Leadership’s prestigious “Heart of Marin” award for excellence in board leadership.

Joe’s work history includes being part of the founding senior management team for seven start-up organizations. His efforts have resulted in two successful IPOs, a management-led leveraged buyout, and a corporate turn-around. California Medicine Magazine identified him as one of the leading health care entrepreneurs in its 1998 “Who’s Who” list.


  • 30 years of management experience in both the nonprofit and for-profit sectors.
  • 7 years as Governing Board Member Treasurer for the IHSS Public Authority of Marin, appointed by the Marin County Board of Supervisors.
  • Advisory Board Member and Guest Faculty Lecturer, UC Berkeley’s School of Public Health Policy & Administration Center for Health Management Studies.
  • University of New Haven, CT, MBA Program
  • Bryant University, Smithfield, RI, BS in Marketing and Economics

Joe O’Hehir fue contratado por la junta directiva de Whistlestop en Octubre del 2008. El es un experimentado ejecutivo con más de treinta años de experiencia en administración. Desde 1992 Joe ha estado brindando liderazgo ejecutivo a organizaciones sin fines de lucro en el Area de la Bahía en San Francisco. En el año 2006, Joe recibió el prestigioso premio “Corazón de Marin” Center for Nonprofit Leadership por la excelencia en liderazgo de junta directiva.

La historia del trabajo de Joe incluye ser parte del equipo de gerencia senior, fundador de siete organizaciones en su etapa de inicio. Sus esfuerzos han resultado en dos exitosas IPOs, una gestión liderada de compra y un giro corporativo. California Medicine Magazine lo identificó como uno de los empresarios líderes en el área de salud en su lista de “Quien es Quien” de 1988.

Experiencia Profesional:

  • 30 años de experiencia en gerencia tanto en el sector no lucrativo como lucrativo.
  • 7 años como Tesorero de la Junta Directiva para IHSS Public Authority of Marin, nombrado por la Junta de Supervisores del Condado de Marin Marin.
  • Miembro Asesor de la Junta y Profesor Invitado de la Facultad, UC Berkeley’s School of Public Health Policy & Administration Center for Health Management Studies.
  • University of New Haven, CT, Programa MBA
  • Bryant University, Smithfield, RI, BS en Mercadeo y Economía

Nancy Geisse, Chief Operating Officer

Nancy Geisse, Chief Operating OfficerNancy joined Whistlestop in January of 2019. As Chief Operating Officer, she has strategic and operating responsibility for all of Whistlestop programs and services, including transportation, healthy aging, and nutrition. Previously, Nancy worked with Whistlestop as a consultant to complete a three-year strategic business plan for the organization’s transportation services division. Prior to Whistlestop, she was vice president of strategy and business development at Uppercase Branding, served as director of project management at Certain Solar, executive vice president at Trio Energy, and chief executive officer and founder of MedStep Health Services. Nancy has a Bachelor of Science Degree in Mathematical Sciences from Stanford University, where she graduated Phi Beta Kappa and a Master of Business Administration from Stanford Graduate School of Business.

Jeff Wands, Chief Financial Officer

Jeff Wands, Chief Financial OfficerJeff joined Whistlestop in October of 2018, taking on responsibility for Whistlestop’s financial management, forecasting, reporting, and risk management, as well as information technology and facilities management. Prior to Whistlestop, Jeff worked for 8 years at Westcoast Children’s Clinic, a private, non-profit children’s psychology clinic in Oakland, serving as their Chief Financial Officer / Chief Operations Officer.  Prior to Westcoast Children’s Clinic, Jeff’s career experience includes Chief Financial Officer for Connecticut Humane Society and Vice President of Finance at Kelson Physician Partners.  Jeff has a Bachelor of Science degree in Business Administration with a concentration in Finance and a Master of Science degree in Business Administration with a concentration in Computer Information Systems.

Ashley Baker, Chief People Officer

Ashley Baker, Chief People OfficerAshley joined Whistlestop in October 2013, as our HR Manager and Director, before her promotion to Chief People Officer. Prior to joining Whistlestop, Ashley worked at national outdoor gear and clothing retailer REI in their human resources department for 18 years. Whistlestop’s HR services made great strides under Ashley’s guidance, including managing a 93% increase in the number of Whistlestop employees in three years. She holds a Bachelor of Arts degree in organizational psychology from the University of California, Santa Barbara.

Erick Villalobos, General Manager of Transportation Services

Erick Villalobos, General Manager of Transportation ServicesErick joined Whistlestop in October of 2019. As general manager of transportation services, he is responsible for the leadership and management of Whistlestop’s transportation services department, and the management of Whistlestop’s operating contracts and partnerships with various transportation agencies and organizations in Marin, Sonoma and San Francisco counties. Prior to Whistlestop, Erick held several positions at the University of California, San Francisco (UCSF) for over 30 years. At UCSF he served as director of UCSF Transportation Services, associate director of UCSF Transportation Services and security manager of UCSF Police Department. Erick has Bachelor of Arts degrees in psychology and political Science from Notre Dame de Namur University, and a Master of Business Administration from the School of Business and Management at Notre Dame de Namur University.

Stephanie Robison, Director of Healthy Aging Services

Stephanie Robison, Director of Healthy Aging Services

Stephanie joined Whistlestop in August of 2019. As director of healthy aging services, she is responsible for the development of programs and services that support the health and well-being of Marin’s older adult community. Stephanie came to Whistlestop with a strong background in the fields of healthcare and gerontology. Prior to Whistlestop, she served as manager of geriatric programs at California Pacific Medical Services Organization, now known as Brown & Toland, business manager at Marin Foot and Ankle, account manager at LifeMasters Supported SelfCare, and recreation and fitness director at San Francisco Towers. Stephanie has a bachelor’s degree in psychology with a minor in aging from Washington State University, and a master’s degree in gerontology from San Francisco State University.

Yvonne Roberts, Chief Donor Relations Officer

Yvonne Roberts, Chief Donor Relations OfficerYvonne joined Whistlestop in 2009 to rebuild our Development & Marketing department. Under her leadership, the organization has seen significant growth in the amount of funds raised, as well as an increase in the number of donors supporting Whistlestop. As Chief Donor Relations Officer, she is responsible for securing funds for the organization by fulfilling the interests and passions of donors by providing them with giving opportunities and encouraging them to give. Yvonne secures major donor pledges for the Capital Campaign to fund our new Health Aging Campus project, as well as cultivates new major donors. Prior to Whistlestop, Yvonne was a grant writer and FEMA Coordinator with the town of Fairfax, worked in management and sales for a theatrical audio tour company, Antenna Audio/Discovery Communications, and did environmental education work.

Bill Cullison, Development Operations Director

BillBill Cullison, Development Operations Director joined Whistlestop in February of 2019. He is responsible for managing Whistlestop’s Development Department, including the annual fund development plan, donor cultivation, and acquisition, mid-level donor programs, and events. Prior to Whistlestop, Bill had a rewarding 14-year career at Guide Dogs for the Blind, where he served most recently as Development Services Manager. Prior to Guide Dogs, Bill worked for 11 years at the California State Parks Foundation as Donor Database Administrator. He has a Bachelor of Science Degree from Indiana University.