Through innovation, research, and comprehensive patient care, we strive to improve health outcomes and enhance the quality of life for those we serve.
The Diabetes & Thyroid Center of Fort Worth (DTC) was established in 2007 with a commitment to providing compassionate, up-to-date, and comprehensive care. Our board-certified endocrinologists practice evidence-based medicine to deliver the highest quality treatment to our patients. Serving the greater Fort Worth area and surrounding counties, DTC continues to expand its services to meet the growing needs of our community.
With our recent move to a larger facility, DTC remains dedicated to its vision of being a world-class diabetes center and a regional leader in the treatment of all endocrine conditions. In addition to expert endocrinology care, DTC is deeply engaged in clinical research, driving scientific advancements in diabetes, lipid disorders, thyroid, adrenal, and cardiovascular disease. Through our research efforts, we provide patients with unprecedented access to cutting-edge treatments and medical innovations, ensuring they benefit from the latest advancements in endocrine care.
your doctors and their team
Darren Lackan, MD, FACE, ECNU
Founder & CEO, Diabetes and Thyroid Center of Fort Worth
Board-Certified in Endocrinology, Diabetes & Metabolism
Dr. Darren Lackan is a board-certified endocrinologist and the Founder and CEO of the Diabetes and Thyroid Center of Fort Worth. A respected leader in his field, Dr. Lackan is dedicated to delivering world-class, evidence-based care to patients across North Texas.
Jenna Davison,
PA-C
Ryan Benner,
PA-C
Sophia Mora,
PA-C
your doctors and their team
Darren Lackan, MD, FACE, ECNU
Founder & CEO, Diabetes and Thyroid Center of Fort Worth
Board-Certified in Endocrinology, Diabetes & Metabolism
Dr. Darren Lackan is a board-certified endocrinologist and the Founder and CEO of the Diabetes and Thyroid Center of Fort Worth. A respected leader in his field, Dr. Lackan is dedicated to delivering world-class, evidence-based care to patients across North Texas.
Jenna Davison,
PA-C
Ryan Benner,
PA-C
Sophia Mora,
PA-C
Anjanette Tan, MD, FACE, ECNU
Making complex endocrine care clear, accessible, and empowering.
Dr. Tan is a board-certified endocrinologist who cares for patients with a wide range of endocrine conditions, including diabetes, thyroid, parathyroid, adrenal, and pituitary disorders, as well as other hormone-related conditions. She believes in meeting each patient where they are and working together to find practical, meaningful steps toward better health.
Rachel Mansheim,
FNP-C
Joy De Guzman,
FNP-BC
Lisa Mijares,
AGNP-BC
Angelique Tchounkovsky,
ANP-BC
Anjanette Tan, MD, FACE, ECNU
Making complex endocrine care clear, accessible, and empowering.
Dr. Tan is a board-certified endocrinologist who cares for patients with a wide range of endocrine conditions, including diabetes, thyroid, parathyroid, adrenal, and pituitary disorders, as well as other hormone-related conditions. She believes in meeting each patient where they are and working together to find practical, meaningful steps toward better health.
Rachel Mansheim,
FNP-C
Joy De Guzman,
FNP-BC
Lisa Mijares,
AGNP-BC
Angelique Tchounkovsky,
ANP-BC
Farheen Saeed, MD
Dr. Saeed is board-certified in Endocrinology and has clinical expertise in managing diabetes, thyroid disorders, hormonal imbalances, and metabolic health. She follows a practical, patient centered approach—blending evidence-based medicine with empathy and respect to promote long-term wellness.
Farheen Saeed, MD
Dr. Saeed is board-certified in Endocrinology and has clinical expertise in managing diabetes, thyroid disorders, hormonal imbalances, and metabolic health. She follows a practical, patient centered approach—blending evidence-based medicine with empathy and respect to promote long-term wellness.
Clinical Support Team
Suzanne Weldon, RD, LD, CDCES
Suzanne joined DTC in July 2015. She is passionate about providing the most up-to-date & scientific evidence-based diabetes education & medical nutrition therapy for endocrine disorders. She also is a Certified Product Trainer for insulin pumps, CGMs, & other diabetes devices.
Karima Hicks
Lead Medical Asssistant
Ryan Drennon
Lead Medical Assistant
Clinical Support Team
Suzanne Weldon, RD, LD, CDCES
Suzanne joined DTC in July 2015. She is passionate about providing the most up-to-date & scientific evidence-based diabetes education & medical nutrition therapy for endocrine disorders. She also is a Certified Product Trainer for insulin pumps, CGMs, & other diabetes devices.
Karima Hicks
Lead Medical Asssistant
Ryan Drennon
Lead Medical Assistant
ADMINISTRATIVE TEAM
Tanisha Williams, MHA, Administrator
Tanisha Williams is a dynamic Administrator for the Diabetes and Thyroid Center (DTC), bringing a powerful foundation in service and leadership to the clinic's operations. A native of Detroit, Michigan, Tanisha joined DTC a year ago and has quickly become integral to its success.
Karima Hicks
Lead Medical Assistant and MA
for Dr. Darren Lackan
Ryan Drennon
Lead Medical Assistant and MA
for Dr. Anjanette Tan
ADMINISTRATIVE TEAM
Tanisha Williams, MHA, Administrator
Tanisha Williams is a dynamic Administrator for the Diabetes and Thyroid Center (DTC), bringing a powerful foundation in service and leadership to the clinic's operations. A native of Detroit, Michigan, Tanisha joined DTC a year ago and has quickly become integral to its success.
Karima Hicks
Lead Medical Assistant and MA for Dr. Darren Lackan
Ryan Drennon
Lead Medical Assistant and MA for Dr. Anjanette Tan