Our Team

Dr. Michael Carnahan, MD

Dr. Michael Carnahan was born in Lawton and went to undergrad at OU. He attended OU School of Medicine from 1982 to 86. His residency in family practice was done at St Joseph’s program in Wichita, KS and completed in 1989 and is still currently board certified in family medicine. He has been in practice with Dr. McCulloh in Ardmore since that time. Initially, Dr. Carnahan delivered babies for the first few years in practice (which he loved). He has worked in occupational medicine at Michelin, in-patient behavioral medicine, in- patient medicine, pediatrics, and rehab. He has been medical director of nursing homes, home health, and hospice organization, and has also been a teaching preceptor for the OU and OCU PA programs and have taught multiple students through the years. He lled several teams to Uganda Africa to do medical mission work. He and Dr. McCulloh have always had a heart to serve our community and helped start the Good Shepherd Clinic along with others in our community to help the underserved. He and his beautiful wife Shawna and have raised three wonderful children here in Ardmore and are active in the Methodist Church. Dr. Carnahan says that he feels so blessed to serve in this community and to continue to be a part of Good Shepherd Community Clinic.

Justin Walker, PharmD

Justin Walker was born in 1993 in Ardmore, Oklahoma, and graduated from Dickson High School in 2012. That same year, he began working at a retail pharmacy, an experience that inspired him to pursue a career as a pharmacist. This path led Justin to Southwestern Oklahoma State University in Weatherford, where he graduated from pharmacy school in December 2022.

After graduation, he worked at Walmart Pharmacy in the Oklahoma City area until May 2024, gaining valuable experience in the field. In June 2024, Justin returned to Ardmore with his family and joined Good Shepherd Pharmacy, where he is proud to serve his community as a pharmacist.

Kerri Farmer, APRN-CNP

Kerri moved to the Ardmore community in 2007, after being raised in the Ada area. She received both her Bachelor of Science in Nursing and her Master of Science in Nursing from the University of Oklahoma College of Nursing in Oklahoma City. She is board certified as a family nurse practitioner and an active member of the American Academy of Nurse Practitioners (AANP). Her areas of interest include chronic disease, diabetes management, obesity, health and wellness promotion and preventive medicine. As a provider, she seeks to emphasize patient education, patient empowerment, and compassionate care. Her belief is that if allowing the patient to control their health care goals and have input into their own health, they will be empowered to make healthier decisions. She is certified to care for patients from birth to geriatrics. 

In her free time, she enjoys spending time with her husband, Eric and their two children. Her hobbies include gardening, photography and crafting. 

Gina Hernandez-Roberts, PA-C

A long time Ardmore, OK resident, Gina was born in Tegucigalpa, Honduras in 1979. Her family migrated to United States, specifically to Ardmore, in 1982. Gina graduated from Plainview High school in 1998 and then attended East Central University in Ada, OK. She graduated in 2002 with a Bachelor’s degree in Biology. That same year, she accepted an offer to OU’s Physician Assistant Program in Oklahoma City, OK. During her practical year in the program, she married Jeff Roberts from Blair, OK. Upon graduating with a masters’ in Health Science, Gina accepted a position as a Physician Assistant with the Family Health Center in Ardmore.

Gina believes that you should treat the patient and not just the diagnosis. She has over 15 years of experience in family medicine. Gina chose family medicine because she feels like it is the cornerstone of medicine, health education, and preventative care. Being from a Hispanic back ground, she is fluent in Spanish and feels honored to be able to use it daily. Now that she has joined the Good Shepherd Community Clinic, she is excited to continue to offer quality health care.

Gina and her husband Jeff have always loved to serve. She not only does this in her family practice but also by doing mission work. She and her husband have traveled to Uganda, Mexico, and Honduras on several mission trips. After the birth of her daughter Harper, she continued to serve in a different capacity. Gina served on the YW8 board from 2012-2014. She is currently a member of the Board of Trustees for Oak Hall Episcopal School.

On her down time, Gina enjoys spending time with family, traveling, reading, and exploring new cultures and food

Dr. JaHannah Jamelarin, MD

Dr. JaHannah Jamelarin is a highly qualified physician specializing in psychiatry with a vast array of academic and professional experience. She is currently pursuing a Master of Business Administration from Oklahoma City University while holding a Graduate Certificate in Healthcare Practice Management from the same institution. She obtained her Doctor of Medicine degree from Wright State University's Boonshoft School of Medicine and completed her General Psychiatry Residency at the University of Cincinnati's Department of Psychiatry and Behavioral Neuroscience. In September 2013, she became Board Certified in Psychiatry by the American Board of Psychiatry and Neurology.

Dr. JaHannah Jamelarin currently serves as the Chief Integrated Health Officer for the Good Shepherd Community Clinic.  In this role, she oversees the integration of behavioral health and other services to optimize patient care and outcomes. Previously, she has worked in the telemedicine sector providing psychiatric care in multiple states as well as working at institutions such as the Laureate Psychiatric Clinic and Hospital, Mental Health Services of Southern Oklahoma (now Lighthouse Behavioral Health), and Mercy Hospital-Ardmore.  Additionally, she has held academic positions, including Assistant Professor of Psychiatry-Clinical at The Ohio State University.

Dr. JaHannah Jamelarin's service and leadership experience includes serving on the board of Girls on the Run of Southern Oklahoma and serving as a Trustee of Oak Hall Episcopal School. She is also a co-developer and speaker for Teaching with Hope, a program that focuses on mental well-being and coping with stress during the COVID-19 pandemic. Additionally, Dr. JaHannah Jamelarin has participated in several national presentations and is an active member of various professional associations, including the American Psychiatric Association, the Oklahoma Psychiatric Physicians Association, the Oklahoma State Medical Association, and the Ohio Psychiatric Physicians Association.

Daphnee Jones, PA-C

Daphnee Jones was born in Arkansas and moved to Stratford, Oklahoma in 2015 where she graduated from in 2016. She graduated with a Bachelor of Science in Biology in 2020 from the East Central University. She then attended The Oklahoma City University Physician Assistant program and graduated in 2023. During her time in PA school she served as the class secretary for 28 months. She rotated at Good Shepherd Clinic two different times as a student before joining the practice in June of 2023. She and her husband Ethan have been married since 2019 and have a farm with a variety of animals in Roff, Oklahoma. She became interested in family medicine after her first rotation at GSCC after getting to experience the "whole patient" approach. She always wants to do what is best for each patient and she feels like she can accomplish that here at GSCC.

Daphnee enjoys spending time with family/friends, tending to her animals, and reading a good book.

Michelle Martin, APRN-CNP

Michelle Martin is a Family Nurse Practitioner.  Michelle is a native of Skiatook and currently lives in Wynnewood.  She earned a Bachelor’s of Science in Nursing from Oklahoma City University in 2006.  She worked 11 years as an RN in pediatric hematology/oncology and public health.  She earned her Master’s of Science in Nursing in 2017 from the University of Oklahoma.  Michelle had been practicing in Pauls Valley until joining Good Shepherd this year.  She has been married since 2006 and has two children, Blaine and Carter.  Michelle is active in Kappa Phi, a Christian women’s organization, and with her church. In her free time, she enjoys reading, cooking, watching OSU football, and spending time with family. Michelle loves taking care of several generations in a family and is looking forward to caring for families in the Ardmore area.

Zann Shelton, APRN-CNP

Zann has been providing excellent women’s healthcare in Southern Oklahoma for over 32 years. She began her nursing career in 1990 after receiving a Bachelor of Science in Nursing degree from East Central University. As an RN for 17 years, she gained vast experience in pediatrics, women’s health, and maternity care. In 2006 she graduated from Texas Woman’s University with a Master of Nursing-Family Nurse Practitioner Degree. Zann is a board certified Family Nurse Practitioner through the American Association of Nurse Practitioners (AANP). She also received a board certification as a Lactation Consultant in 1999 and has over 25 years of experience helping many moms and babies achieve a successful breastfeeding experience.

Zann has been happily married to her husband Bobby for 32 years. They have two married children. She loves the summertime and spends it with family and friends in the outdoors.  Zann’s passion is to provide personalized quality health care to women from all backgrounds. She strives to create a relaxed office setting so that both women and teens can feel comfortable discussing  any needs or concerns.

Dr. Terrick Washington, DDS

Dr. Terrick Washington is a native of Ardmore, Oklahoma. He graduated from Plainview High School in 2009. He obtained a Bachelor of Musical Arts degree from the University of Oklahoma in 2014. Dr. Washington is a graduate of the OU Health Sciences Center College of Dentistry, where he received high quality training and experience in preventive and restorative dentistry. He, his wife, and his three children love the Ardmore community.

Lacy Westfall, APRN-CNP, WHNP-BC

Lacy was born in Ardmore, OK in 1987. She is a long-time resident of Love County where she resides with her husband Jeremy and their two daughters, Landry & Joley. She attended Murray State College School of Nursing, graduating in 2008. After 5 years of nursing, she returned to school and completed her Bachelor of Science in Nursing from Oklahoma City University Kramer School of Nursing in 2013. During this time Lacy gained experience in various aspects of women’s health care including Labor & Delivery, Postpartum couplet care, Women’s surgery, OBGYN, urogynecology, lactation support and education, pelvic floor therapy and public health. Her experience in nursing as well as her own personal medical experiences led her to pursue a Women’s Health Nurse Practitioner degree from Frontier Nursing University. Her goal is to increase access to care for the women in our community. Lacy believes all women have the right to holistic healthcare in a welcoming and nonjudgmental environment.  She was drawn to GSCC and its mission to serve the community and is excited to share their core values with the women she cares for.

Jessica Rousey, PharmD

Info coming soon!

Heidi Wright, PharmD

Heidi was born in Ardmore, OK in 1981, but grew up in Davis, OK her whole life.  She is a 1999 Davis High School graduate.  She went on to Oklahoma State University for her undergraduate coursework.  In 2002, she was accepted to the University of Oklahoma College of Pharmacy and completed her Doctor of Pharmacy degree in 2006.  She then moved back to Davis where she worked for her uncle, Randy Moore, at City Drug for the next three years.  On January 1, 2010, she purchased City Drug and ran it successfully for the next 11 ½ years before selling her business in August 2021.  During that time she served on the OU College of Pharmacy Alumni Association, serving as President during 2013-2014.  She is also a preceptor/adjunct faculty through the OU College of Pharmacy where she has mentored and taught several students in her independent retail pharmacy setting.  She and her husband, Jason, and their two boys have made their home in Davis.  They are members of Midway Hill Baptist Church where Heidi teaches a children’s Sunday School class. In her spare time, she loves to watch her boys play baseball, football and show livestock.

Jerry Wright, DPh

Jerry grew up in Hollis, Ok and attended Southwestern Oklahoma State University where he obtained a B.S. in Pharmacy degree. He has 43 years experience in the pharmacy field. Jerry is active in his church and has gone on several rewarding medical mission trips to Nicaragua. Jerry enjoys taking care of his customers and feels like he is making a difference. His hobbies include fishing, traveling, and following OU football.

Dr.Lance Mwangi, MD

Dr. Lance Mwangi, MD is a compassionate and dedicated family physician. He graduated from Texas A&M Commerce on a full scholarship in 2013, where he served as the volunteer coordinator for the Joint Admission Medical Program, supporting low-income students aspiring to enter medicine. His commitment to service shines through in his numerous volunteer initiatives, including free blood pressure screenings, CPR training, and food bank support for local communities.

Dr. Mwangi earned his medical degree from Texas Tech School of Medicine in 2021 and completed his Family Medicine residency in Houston, Texas, in 2024. His diverse research background and commitment to lifelong learning drives his pursuit of the latest advancements in patient care.

Outside of medicine, Dr. Mwangi enjoys traveling, movies, and staying active at the gym. He is excited to bring his expertise and genuine care to the Ardmore community, where he is dedicated to serving patients from all backgrounds.

Dr. Rebekah Fraley, DO

Info coming soon!

Jo Fuller, APRN-CNP

Jo Fuller, APRN-CNP was born in Ardmore, Oklahoma, and raised in Ringling, Oklahoma. She is a dedicated and compassionate Family Nurse Practitioner with over a decade of experience in Obstetrics and Gynecology. Jo received her Post Master’s Certificate from Texas Woman’s University and holds an M.S. in Nursing from the University of Phoenix. She began her career with an A.A.S. in Nursing from Scottsdale Community College and also holds a B.A. in Public Administration from the University of Oklahoma.

Jo is board certified through the American Association of Nurse Practitioners (AANP). For more than 10 years, she has been providing comprehensive care to women in Ardmore. Her services include contraceptive care, routine gynecological exams, hormone replacement therapy, cosmetic injectables and patient education on reproductive health. Her approach is holistic, focusing on personalized, compassionate care that meets the unique needs of each patient.

Throughout her career, Jo has worked in various roles, including circulating nurse at the Day Surgery Center in Ardmore, district nurse at Plainview Public Schools, and as a pediatric ICU nurse at Phoenix Children’s Hospital. Her diverse experiences have strengthened her clinical expertise and reinforced her commitment to patient-centered care.

Jo has been happily married to Chuck Fuller for 28 years. Together, they have two children: Adam, a Marine stationed in North Carolina, and Avery, who is currently a junior at the University of Arizona. Outside of her professional life, Jo enjoys spending quality time with her family and friends. She is passionate about providing high-quality healthcare to women in her community and is committed to making a positive impact on her patients’ lives.

Jared Ellsworth, PA-C

Jared Ellsworth recently moved to Oklahoma, and has loved the welcoming, friendly, and family centered atmosphere found in Ardmore. He’s lived in 10 states, including Alaska, Ohio, Kansas, and Idaho. While in Idaho, he attended Brigham Young University-Idaho (BYU-I). He obtained his Bachelor’s Degree in Biomedical Sciences with a minor in Nutrition.

Following his time in Idaho, he moved with his family to Hershey, Pennsylvania. He attended Penn State College of Medicine. He completed a Masters in Physician Assistant Studies.

During his time at the chocolate capital, he completed medical rotations at the Penn State Health Children’s Hospital. He did several rotations, including pediatric otolaryngology (Ear, nose, and throat), pediatric cardiology (heart) and pediatric psychiatry (mental health).

His favorite part about being a PA is caring for children! You may find him singing baby shark or the ABCs during a kids ear examination.

Jared is an advocate for building healthy people- the motto of Good Shepherd. That is why he moved to Oklahoma! He believes that “healthiness” is best achieved through a whole person approach. He loves educating patients on healthy eating, physical activity, sleep habits, and more. In addition, he believes healthy people begin in healthy families.

On a personal note, Jared and the love of his life, Millie, have been married for six years. They are the parents of 3 young boys. Their favorite place to be is at home as a family. They spend their time cooking together, going on walks and bike rides, and sitting outside on their patio. They love exploring the local hiking trails, playing soccer, pickleball, and frisbee. In Jared’s free time, he listens to audiobooks.

Jared has a strong faith in Jesus Christ and strives to treat others as he feels Christ would. He is active in his church where he teaches a Sunday school class for boys ages 6 through 9.

Jese Valeriano, RDH

Jese Valeriano, RDH was born in Dallas, Texas, and has called Madill, Oklahoma home since 2006. He graduated from Madill High School in 2018, then went on to earn his Associate of Arts and Science degree from Murray State College in 2021. That fall, he was accepted into the University of Oklahoma’s Dental Hygiene program at the SOTC distance site in Ardmore, where he completed his Bachelor of Science in Dental Hygiene in 2023.

Jese is passionate about providing the highest quality of care and strives to treat every patient like family. As a child, he often translated for his parents at dental appointments, which gave him firsthand experience with the challenges language barriers can create in healthcare. His main goal, being bilingual in English and Spanish, is to communicate more effectively with patients and thoroughly educate them on their oral health—no matter which language they speak.

Outside of the clinic, Jese enjoys working out at the gym and trying new foods.

Dr. Pamela Kimbrough, MD

Dr. Pam Kimbrough, MD graduated from the University of Oklahoma College of Medicine and went on to complete her residency in Obstetrics & Gynecology at the University of Oklahoma in Tulsa. She then spent a decade practicing in Denver, Colorado, where she served as Secretary of the Colorado Section of the American College of Obstetrics and Gynecology and as a member of the Colorado State Medical Board.

In 2000, Dr. Kimbrough returned to her home state of Oklahoma to join the practice of Dr. John Becker. Five years later, she opened her own clinic—Life’s Cycle Women’s Care—where she cared for countless women in the community. Over time, she expanded her services to include bioidentical hormone therapy and aesthetic care for both women and men.

Dr. Kimbrough has also been a trailblazer in leadership. She became the first female Chief of Staff at Mercy Hospital, served on the hospital’s Board of Directors, and dedicated 14 years as Vice President of Medical Affairs.

Although Dr. Kimbrough retired from full-time active practice in December 2024, she still enjoys providing some advanced gyencological procedures for patients at GSCC's Bloom Womens' Health Center.

Dr. Cameron LanCarte, MD

Cameron LanCarte, MD, is a dedicated family medicine physician with a passion for integrative and lifestyle medicine. A proud graduate of Texas A&M University and the American University of the Caribbean Medical School, Dr. LanCarte recently completed his residency at Texas RGV Family Medicine Residency in McAllen, TX, where he was honored for his commitment to integrative medicine and behavioral health.

Dr. LanCarte believes in a conservative, team-based approach to healthcare, focusing on treating the root causes of his patients' conditions. Now practicing in Ardmore, he has embraced Lifestyle Medicine, recognizing its vital role in addressing and correcting the underlying causes of acute and chronic illnesses through lifestyle changes, while maintaining a comprehensive approach to patient care.

Anita Alaniz, DNP, FNP-C, WHNP

Anita Alaniz is board certified as a Family Nurse Practitioner since 2001 and has a Master of Science in Nursing. She has a doctorate in nursing practice which she obtained at Arizona State University in 2015. She has been a nurse executive and has functioned as a Chief Nursing Officer and Director of Nursing at the San Carlos Apache Hospital and the San Carlos Apache Tribe for over 7 years. She was a nurse executive in Guadalupe, AZ and in Gallup, New Mexico.

Her experience as Nurse Practitioner includes pediatrics and adults, with a secondary in Women’s Health. She has experience in rural settings, especially in minority populations. Anita has a passion for developing programs needed in public health settings for under- served populations. She developed the plan for the school-based clinic and screening on the San Carlos Apache Reservation, along with establishing the school nurse program to collaborate with the Outpatient Clinics.

She developed the Maternal Child Health Program (MCHP) on the San Carlos Apache Reservation. The MCHP’s goals were to capture children’s immunizations, increase Well Child Exams, increase pap smears and breast exams for women, and target women for early prenatal care on the Reservation. She also worked closely with CDC and the State of Arizona with high incidences of Rocky Mountain Spotted Fever and other outbreaks on the Apache Reservation.  Anita was a captain and retired Army Reservist where she served for 10 years. She assisted in training of medics for the 349th General Hospital unit in Los Angeles, California.

Megan Powers, APRN-CNP

Info coming soon!

Stefan Jones, PharmD

Stefan is a 2007 graduate of Madill High School. After that, he obtained his Bachelor of Chemistry degree from Southeastern Oklahoma State University in 2011, and earned his Doctor of Pharmacy in 2015 from Southwestern Oklahoma State University. Stefan has worked in retail pharmacies for nearly a decade and finds true joy and passion in building relationships and rapport with his patients. 

His bests blessings are his wife, Reba, and his two girls and enjoys spending as much time as possible with them. In his spare time, he enjoys hobbies such as racing, football, golf, and fishing.