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MA in Counseling: Faculty

In Our Lady of the Lake University's (OLLU) online Master of Arts in Counseling program, you'll learn from faculty whose teaching is informed by their years of real-world counseling experience. They'll work directly with you to help bring your educational and professional goals to life.

Plus, you'll follow a curriculum that mirrors the standards of the Council for Accreditation of Counseling and Related Education Programs (CACREP), so you're assured a first-rate education.

  • Leah Alviar, Ph.D., LPC

    Director, Center for Teaching Excellence

    Leah Alviar, Ph.D., LPC, is OLLU's Director of the Center for Teaching Excellence, which includes Online Learning. She has previously served as the Director for the Center of Teaching and Learning, as the sole Instructional Designer, an assistant professor with the OLLU Education Department, adjunct faculty, and course developer for the MA in School Counseling Online Program at OLLU. Alviar has more than 13 years' experience teaching university students in both the online and onsite environments and well as designing and developing graduate online courses.

  • Sara Bixler, Ph.D.

    Professor, Counseling

    Sara Bixler, Ph.D., has been with Our Lady of the Lady University for more than 10 years, spending much of that time working in our Education department. Beyond her time with OLLU, Bixler has spent more than 30 years working in the Uvalde Independent School District. During that time, she's held positions including teacher, counselor, elementary principal, and assistant and principal at Uvalde High School prior to becoming assistant superintendent. At present, she works with Rodriguez Elementary in the Multi-Tiered System of Support (MTSS) and is a field supervisor.

  • Katrina Cook, PhD, LPC-S, CSC, LMFT-S

    Program Director and Associate Professor, Counseling

    Katrina Cook, PhD, LPC-S, CSC, LMFT-S, joined Our Lady of the Lake's Counseling Department as program director and associate professor in 2018. She brings 10 years of experience teaching higher education counseling courses.

  • Demetrius Donseroux

    Adjunct Faculty, Counseling

    Demetrius Donseroux, PhD, LPC, GCDF, CPCU, joined Our Lady of the Lake's Counseling Department as an adjunct professor in 2010. He brings 10 years of experience teaching higher education counseling courses.

  • Stephanie Eberts

    Adjunct Faculty, Counseling

    Stephanie Eberts, Ph.D., is an adjunct instructor at Our Lady of the Lake San Antonio. She earned her doctorate in Counselor Education and Supervision from Georgia State University and her master’s degree from Loyola University, New Orleans.

  • Cullen Grinnan, Ph.D.

    Associate Professor, Counseling

    Cullen Grinnan, Ph.D., is a tenured Associate Professor with the Education Department of Our Lady of the Lake University. Grinnan initiated the Online School Counseling Program in 2010 and served as the Program Coordinator until 2016. He currently serves as the Coordinator for Clinical Mental Health and continues to develop and teach counseling classes in the online formats.

  • Elizabeth A. Holbrook, Ph.D.

    Adjunct Professor, Counseling

    Elizabeth A. Holbrook, Ph.D., brings more than 20 years of experience counseling in K–12 public schools to her students as an Adjunct Professor of Counseling at Our Lady of the Lake University. Beyond teaching, she currently works as a Professional School Counselor in Northside Independent School District in San Antonio, Texas.

  • Michelle R. Holcomb, Ph.D., CAI-II, LPC-S

    Assistant Professor, Counseling

    Michelle R. Holcomb, Ph.D., CAI-II, LPC-S, is an Assistant Professor in the Counseling Department of Our Lady of the Lake University. She owns Hill Country Intervention and Counseling where she acts as a professional mental health therapist and interventionalist specializing in eating disorders, behavior disorders, substance abuse disorders, and sports performance issues.

  • Christina R. Marbach, Ph.D., LPC

    Adjunct Faculty, Counseling

    Christina R. Marbach, Ph.D., recently joined Our Lady of the Lake as an adjunct faculty member in the department of counseling. Marbach has been a Licensed Professional Counselor for more than 18 years and has worked in a variety of behavioral healthcare settings, including residential treatment. Additionally, she maintained a private practice for more than seven years where she worked predominantly with children and their families.

  • Quiteya D. Walker, LCMHCA (NC), NCC, CRC

    Adjunct Faculty, Counseling

    Dr. Quiteya Walker is a native of Charleston, SC. She graduated from South Carolina State University with both her Bachelor's and Master's Degrees in Criminal Justice and Rehabilitation Counseling, respectively.