Zachary College



Zachary College is named after T. Eugene Zachary, D.O.  Dr. Zachary served in many different capacities at the Texas College of Osteopathic Medicine; but most notably he was as Vice-President for Academic Affairs and Dean of TCOM from 1984-1990.  In addition to his service to the institution, he also held numerous leadership positions in the osteopathic profession, including Speaker of the American Osteopathic Association House of Delegates, Speaker of the American College of Osteopathic Family Physicians Congress of Delegates and the Texas Osteopathic Medical Association House of Delegates.  Due to Dr. Zachary’s commitment to rural primary care medicine, this college is his namesake.

Dr. Zachary continued to serve TCOM as a part-time faculty member until his passing February 20, 2012.


Zachary College Director:

John O. Gibson, Md
John O. Gibson, MD
Assistant Dean for Rural Medical Education
Assistant Professor
Family Medicine and Osteopathic Manipulative Medicine
Texas College of Osteopathic Medicine

Dr Gibson is the Assistant Dean for Rural Medicine and Director of Global Health at UNT Health Science Center in Fort Worth Texas.  Dr Gibson received his medical degree from UT Southwestern in 1980 and completed residency in Fort Worth at JPS/UT Southwestern Family Medicine Residency program.  Dr Gibson then spent 20 years in Thailand as a medical missionary and was the founding director of the Thai Peoples Welfare Foundation which operated numerous medical and development projects in Northern Thailand. Dr Gibson continues active affiliations in Thailand through teaching and exchange programs with several medical schools and universities.  Dr Gibson is also certified in Tropical Medicine and Travel Health and helps teach tropical medicine and ultrasound in many different locations around the world.

Zachary College Faculty Advisors:

A Clifton Cage, Do

A Clifton Cage, DO, ACOFP
Associate Professor
Medical Education
Texas College of Osteopathic Medicine

Graduate of the Philadelphia College of Osteopathic Medicine 1969 and interned at Doctors Hospital in Columbus, Ohio, then entered private practice specializing in Family Practice in 1970. Precepted Osteopathic Medical Students while there and served as Utilization Review Committee Chairman and Quality Assurance Chairman at Doctors Hospital. Was president of Columbus District Academy of the Ohio Osteopathic Association and president of the Ohio Society of General Practioners in Osteopathic Medicine and Surgery. Joined the faculty of UNTHSC/TCOM in 1994 as an Assistant Professor in the Dept. of Family Medicine and served as preceptor in the Fam. Med. Clinics and as Director of the Central Family Medicine Clinic on Campus. Taught in Physical Diagnosis courses and was Director of Clinical Drug Trials for the Fam. Medicine Dept. and became an Associate Professor in the Dept. While in Central Clinic became the director of the Community Based Outpatient Clinic for the VA. In 2010 retired from UNTHSC/TCOM and worked for the VA Fort Worth Outpatient Clinic as a FP. In 2012 returned to TCOM to work part time in the Rural Scholars Program teaching in the first, second and third year courses as well as being co-course director for the second and third year courses.

Dr. Esplin 1

Bryn Esplin, JD, HEC-C
Assistant Professor
Medical Education
Texas College of Osteopathic Medicine

Bryn S. Esplin, JD, HEC-C, is an Assistant Professor in the Department of Medical Education at the University of North Texas Health Science Center TCOM where she teaches Medical Ethics and Jurisprudence. Dr. Esplin graduated cum laude from the University of California, Berkeley, with a degree in Rhetoric before obtaining her law degree. During law school, she externed with both the Supreme Court of Nevada and the Lou Ruvo Center for Brain Health, with an emphasis on Neuro-Psychiatric Ethics. She went on to complete a two-year Clinical Bioethics Fellowship at the Cleveland Clinic in Cleveland, Ohio, as well as a Visiting Scholar Residency at Yale University in New Haven, Connecticut, and The Hasting Center in New York.

Dr. Esplin is also a certified HealthCare Ethics Consultant and a frequent speaker at both national and international conferences in Medical Education, Clinical Ethics and Humanities. Her scholarship has appeared in numerous peer-reviewed journals, including The Journal of Clinical Ethics, Psychosomatics, and The American Journal of Bioethics.

Vicki Nejtek, Phd
Dr. Vicki Nejtek, PhD
Associate Professor
Pharmacology and Neuroscience
Graduate School of Biomedical Sciences

Since my postdoctoral fellowship in 1999, I have conducted 41 grant-funded studies with a combined estimated worth of over $30 million including pharmaceutical treatment trials, clinical non-pharmacological interventions, neuroimaging studies, program interventions, and program evaluations.  In the bulk of my past investigations I used neurocognitive and psychiatric mood and substance use disorder assessments in psychiatric and neurodegenerative populations who may or may not have substance use disorders.  I have conducted brain imaging (MRI, Diffusion Tensor Imaging), assayed blood, serum, and urine for biomarkers such as BDNF, GDNF, S100b, UCH-L1, and various interleukins to identify risks for chronic disease, treatment response and medication efficacy.  From 2008-2014 my primary academic responsibilities included training and mentoring psychiatry and family medicine residents as well as school of public health graduate students on how to conduct clinical research.  Since 2014 I have mentored TCOM medical students and residents with clinical research activities.  My research topics and study populations have been substantially broadened to fit the needs of my mentees.

Recently I started a collaboration with Dr. Michael Salvatore (a leading expert in Parkinson’s research) and started investigating biomarkers and cognitive functioning to predict risks for Parkinson’s disease in veterans with mTBI.  My lab has had success obtaining extramural and intramural start-up funding.

In this relatively new field of my research career, my primary goal is to leverage the broad clinical research expertise I have gained over the years, merge my basic science background, capitalize on my existing relationships with veteran organizations and expand the new community partnerships with Parkinson’s disease support groups and senior organizations.  I want to apply my knowledge and commitment towards investigating the convergence of biomarkers and cognition to identify a bio-cognitive profile capable of predicting risks for Parkinson’s disease as well as identify efficacious prevention and intervention therapies.

I currently advise 32 TCOM medical students, am the Major Professor for 1 doctoral student and have served or currently serve as a doctoral dissertation committee member for 3 additional doctoral level students.

Rheams Christopher Face
Christopher Rheams, MD
Assistant Professor
Medical Education
Texas College of Osteopathic Medicine

A native of New Orleans, I did my medical training at LSU HSC in Shreveport, LA, for both medical school and Internal Medicine residency. I practiced in Shreveport for about 20 years prior to moving to Weatherford, TX as a hospitalist. A few years ago I had the opportunity to help start the IM residency program there as its first Program Director. I now teach full time, both at UNTHSC and as Program Director in IM at the new residency program at Baylor All Saints in Fort Worth. My chief areas of interest are resident wellness and humanism in medicine. In addition to being an Internal Medicine zealot, I like to roast coffee beans and play music.


This page was last modified on June 26, 2020