Our team is a group of individuals who bring a wonderful sense of diversity to our clinic. Here at the Callie Clinic we strive to create an atmosphere that is warm, caring, and free of stigma or judgement.

Gwynne Palmore

Executive Director

Glenn Moreland

HIV Program Director

Bob Stoolfire

Finance/IT Director

Kelly Fretwell

Office Manager

Norma Piel-Brown

Compliance Officer

Mary Kelly​

Social Case Manager

Mary has worked with the Clinic since April, 2004. She began her clinic career as Outreach Specialist for the clinic and advanced to Office Manager. After taking a year off, she has returned to her passion as a Social Case Manager. Mary is looking forward to the new challenges that this position will bring serving clients and helping them with whatever needs they may have. 

Brandon Holmes

Front Office Coorinator

Brandon began as a member of the Outreach team, however he found that he enjoyed working in the clinic, being directly involved with day to day operations more his forte. Brandon is a very generous and wonderful person that others enjoy being around. He brings laughter to the office, it is his stand out personality that makes him such an asset to our team.

Christopher Grimes

Outreach Prevention Supervisor

Christopher joined the Clinic in 2017.  He showed great passion for working in and with the community, which earned him the title of Outreach/Prevention Supervisor. He takes great pride in educating, testing and being an advocate for members of the community. Christopher tries to also help with decreasing stigma attached to HIV and STD's as well as stigma associated with being tested.

Ray Potts

Transportation Coordinator

Ray has been working at the Callie Clinic since November 2005 when it was known as ARCOT (AIDS Resource Center of Texoma).  He has dedicated himself to his positions as social case manager, transportation services, as well as food pantry services over the years with compassion for the Agency and the clients. Having semi-retired Ray has now taken on the role of Transportation coordinator. His development into this Humanitarian field stems from his BA in Psychology; work on an Adult Psychiatric Unit in Dallas, TX; Substance Abuse Counselor at TDCJ, and SAFP.

Minaxi Rathod, M.D.

Medical Director

Dr. Minaxi Rathod is an infectious disease specialist in Sherman, Texas and is affiliated with Texoma Medical Center. She received her medical degree from N.H.L Municipal Medical College and has been in practice for more than 20 years. She has recently taken the position as Medical Director for the Callie Clinic in 2018.

Stacey Wheatley,A.P.R.N.

Staff Physician


Felicia Owens

Social Case Manager

Felicia has worked for Volunteers of America and Samaritan House, both of Ft. Worth. Felicia has a personality which welcomes everyone. She enjoys meeting people and rising to new challenges. She has a passion for helping those in need. 

Deidre Mask


Deidre brings a great amount of compassion to the clinic. She has a great attitude which is seen in all that she does and is always trying to create a great atmosphere where all that visit the clinic feel welcome.

Tanya Goodman

HOPWA/Outreach Coordinator

Tanya is our newest team member. Tanya has worked with other great non-profit organizations and it is that giving spirit that brought her to the Callie Clinic. Tanya oversees our housing program, and also works along side Christopher in Outreach and Prevention. She is a great advocate for helping people get the healthcare they need and deserve.

Mary Cowen


Mary is a volunteer for the clinic who helps Ray with transportation services for clients. Mary is a most caring and compassionate individual who enjoys donating her time to be of service in her community.

Gene W. Voskuhl, M.D.

Staff Physician

Dr. Voskuhl has 20 years of experience in the field of infectious disease, including academics, private practice, research, and non-profit healthcare. He is a recognized expert in HIV, STDs, and PrEP. Voted the best HIV specialist in Dallas, he brings a stigma-free attitude and welcoming smile to clinical care.

Whitney Vaughn, R.N.

Medical Case Manager

Whitney joined the Callie Clinic in February 2017.  Her passion is nursing and has over 7 years of experience.  She loves caring for others and being a patient advocate.


Melinda Spears L.V.N.

Nursing Staff

Melinda became a nurse in 2016, she has set out to pursue her passion, helping others. As one of our newest team members Melinda assists our Nurse Practitioner Tuesdays through Thursdays and works in our Outreach department on Mondays and Fridays. Our clients and patients are drawn to her genuine character and compassionate spirit.

Kelly, has been with the clinic since June 2014 as Office Manager. Kelly is still learning new things about the clinic every single day.  Kelly loves her job as Office Manager because it gives her the opportunity to help clients that need it the most. Kelly is looking forward to any challenges that may come her way with the growth of the clinic.

Glenn has been employed with The Callie Clinic since 1993 when it was known as AIDS Resource Center of Texoma (ARCOT). He has watched the agency evolve from a small two person agency to where the Clinic stands to this day with an eleven person organization. He is so proud of the clinic and what it stands for. It saddens him to say that some are no longer with us but, will never be forgotten. Glenn, was recently  named the Clinic Administrator overseeing day to day operations and managing the staff. He felt it was time to “pass the torch” to new case managers. His heart will always be in case management to assure the clients of our agency are receiving available services along with the care and concern of living with HIV. He passes this torch with the utmost confidence in our staff to handle this sometimes very delicate issue. Glenn feels an intense drive to ensure that The Callie Clinic will be here to provide support to those living and effected with HIV until there is a cure.


Gwynne came to the clinic in 2000 as Office Manager. In 2003 she was promoted to Chief Financial Officer. She became Executive Director in 2007. While she does not have as much interaction with our clients as she might wish, she is always working behind the scenes to expand our services and ensure that we offer the best possible care.

Bob came out of retirement in 2013 to help Gwynne with the bookkeeping and information technology functions of the clinic. He served as Board Chairman for many years and on the side ran Flamingo Bingo, a fund raising vehicle for the clinic and the House of Hope.

Carly Nash

Medical Assistant

1521 Baker Rd.

Sherman, Texas  75090

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