– Residents –

Our residents enjoy spending time with each other. They are committed to solid family medicine training and are eager to explore what it means to be a physician with a global health perspective. The residents work as a team in an encouraging atmosphere. Though their training is rigorous, schedules ensure time for family, personal spiritual growth and recreation.

Resident Bios

First Year

  • Austin Beatty

    Austin Beatty, MD

    University of Arkasas
  • Bhavitha George, MD

    Bhavitha George, MD

    Christian Med College
  • David Winston, DO

    David Winston, DO

    Liberty University
  • David Herrmann, DO

    David Herrmann, DO

    OK State University
  • Grace Yoon, MD

    Grace Yoon, MD

    Loyola University
  • Ji-sun Shin, MD

    Ji-sun Shin, MD

    MI State Univeristy
  • Joel Slaughter, DO

    Joel Slaughter, DO

    Liberty University
  • Kezia John, MD

    Kezia John, MD

    University of Toledo
  • Scarlet Chou

    Peking University
  • Leah Shell, DO

    Leah Shell, DO

    Univ of North TX
  • Mary O’Hara, DO

    Mary O’Hara, DO

    Campbell University
  • Rebekah Romanu, MD

    Rebekah Romanu, MD

    Loma Linda University

Second Year

  • Anca Dauer, DO

    Edward Via
  • Jazzmine

    Jazzmine Hernandez, DO

    Edward Via
  • Samuel

    Samuel Kammerzell, DO

    Western University
  • Liza

    Liza Kessling, DO

    Campbell University
  • David

    David McVay, DO

    OK State University
  • Roshini

    Roshini Selladurai, MD

    Indiana University
  • Daniel

    Daniel Shields, DO

    Lake Erie College
  • Hunter

    Hunter Southerland, MD

    Texas A&M
  • Sotheavy

    Sotheavy Vann, MD

  • Tyler

    Tyler Verdell, MD

    University of TN
  • Chris

    Chris Walheim, MD

    University of CA
  • Zeke

    Zeke Wang, MD

    Peking University

Third Year

  • Jake

    Jake Fisher, DO

    OK State University
  • Brett

    Brett Grobman, DO

    NY Institute of Technology
  • Matt Haney

    Matt Haney, DO – Chief

    OK State University
  • Morgan

    Morgan Miles, MD

    GA Regents University
  • Cherec

    Cherec Morrison, MD

    Ben-Gurion University
  • Joanna

    Joanna Pan, MD

    Loyola University
  • Esther

    Esther Papp, MD

    Washington University
  • Ryan

    Ryan Tischler, DO – Chief

    Western University
  • Josh

    Josh VanderWall, MD

    MI State University
  • Cordelia

    Cordelia Whitlatch, MD

    University of KS

– graduates –

Over 290 doctors have graduated from our residency program. Fortunately, we are able to keep in contact with most of them through our In His Image Alumni Association. They are working in a variety of locations and a variety of medical practice settings. Although only 10-15% of our residents come from Oklahoma, nearly 25% of the IHI graduates have decided to practice medicine in Oklahoma – many of whom are serving in inner city Tulsa and the greater Tulsa area. Fifteen percent of IHI graduates are currently serving as long-term global health workers and another 10% are serving in Indian Health Service and other underserved populations in the U.S. Most who live in the states are actively involved in domestic or short-term international health outreach, and many are involved in medical education as part of their careers.
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– Faculty –

We believe if residents are well trained and fully trained, they will become like their teachers. Therefore, the caliber of our faculty, our teachers, is of utmost importance. Every In His Image faculty member is passionate about their faith and view the practice of medicine as a calling and ministry. They are all active in clinical practice to ensure up-to-date skills and knowledge and to serve as a quality example for training residents. In addition to our core faculty, about 50 partner physicians in the community teach our residents their specialty during rotations.

  • John Crouch, MD

    John Crouch, MD

    Executive Director Emeritus
  • Mitch Duininck, MD

    Mitch Duininck, MD

    Residency Director & CEO
  • Clay Powell, MD

    Clay Powell, MD

    Senior Associate Residency Director
  • Chris Place, MD

    Chris Place, MD

    Associate Residency Director
  • Ashley Hildebrand, MD

    Ashley Hildebrand, MD

    Assistant Residency Director
  • Ed Rylander, MD

    Ed Rylander, MD

    Designated Institutional Official
  • Frank Hamilton, MD

    Frank Hamilton, MD

    Senior Medical Director
  • Dustin Cupp, DO

    Dustin Cupp, DO

    Medical Director
  • John McVay, M.Div

    John McVay, M.Div

    Chief Operating Officer
  • Matt Acker, MD

    Matt Acker, MD

  • Dave Armentrout, PhD

    Dave Armentrout, PhD

  • Megan Brown, PsyD

  • Jacob Greuel, MD

    Jacob Greuel, MD

  • Carol Howard, MD

    Carol Howard, MD

  • Elliot Janssen, DO

    Elliot Janssen, DO

  • Chris Jenkins, MD

    Chris Jenkins, MD

  • Scott Keller, MD

    Scott Keller, MD

  • Sarah Killian, MD

    Sarah Killian, MD

  • Chase Ledbetter, DO

    Chase Ledbetter, DO

  • Joel Leitch, MS

    Joel Leitch, MS

  • Johanna McCaskill, MD

    Johanna McCaskill, MD

  • Erin Morgan, MD

    Erin Morgan, MD

  • Enis Sakirgil, MD

    Enis Sakirgil, MD

  • David Simpson, PhD

    David Simpson, PhD

  • Laurel Willlston

    Laurel Williston, MD

– city –


We love calling the riverside city of Tulsa home, with its numerous parks, many nearby lakes, over 1,000 restaurants, extensive retail shopping, plethora of churches and genuinely friendly people. It is a progressive city in America’s heartland where you can feel good about bringing your family. Tulsa is home to two world-class art museums, ballet, opera, theatre and an outstanding philharmonic orchestra. Another very real benefit: salaries stretch farther in Tulsa. While the quality of life here is high, the cost of living is comfortably below the national average.

Tulsa is also an important center of business and technology with thriving businesses in energy, technology and communications, finance, medicine, education and transportation. “Newsweek” named Tulsa one of ten strong emerging technology cities. “Southern Living” magazine named Tulsa one of its “Five Favorite Southern Cities.” Tulsa was selected as one of America’s Most Livable Communities by the Partners for Livable Communities and was chosen one of the Top Ten Places to Live by “Relocate America.” Visit these websites for more information: travelok.com and visittulsa.com.