Contact the Staff

Rolf Institute: (303) 449-5903

Mary Contreras,
Director of Admissions & Recruitment
x 106

Samantha Sherwin,
Interim Executive Director
Director of Faculty & Student Services

x 107
Shellie Marsh,
Office Manager
x 100

For questions regarding Membership, please email


About the Staff


Mary Contreras

Director of Admissions & Recruitment

Mary is a Colorado native and has been in the education/admissions field for over 20 years. She has a passion for helping people further their education or start their careers. With her background in education, she enjoys learning and spending time outdoors with her family.

Responsibilities include:

  • Recruitment
  • Admissions
  • Enrollment
  • Student support
  • Payments


    Samantha Sherwin

    Interim Executive Director
    Director of Faculty & Student Services

    Samantha has worked in Education for over 10 years, primarily working with Title IV and Compliance. She has been with the Rolf Institute since early 2017 and was formerly the Director of Financial Aid. Samantha is a Colorado native and enjoys spending her free time with her family and dogs.

    Responsibilities include:

    • Faculty & Student Services
    • Financial Aid & Compliance
    • VA School Certifying Official
    • Process I-20s for International students
    • Scheduling Continuing Education
    • Room rental inquiries and scheduling

    Shellie Marsh

    Office Manager

    Shellie came to DIRI in early 2022, bringing over 30 years of retail management and bookkeeping experience. She is originally from Indiana but has considered Colorado home for almost 25 years. Shellie enjoys spending time with my family and pets, getting outside, and visiting the latest art exhibits in Denver.

    Responsibilities include:

    • Facilities Management
    • Staff Support
    • Online Store Management
    • Front desk and reception
    • Social media
    • Accounts Payable