Welcome to Advanced Endocrinology & Diabetes Clinic

Dr Harbison
Voted one of Houston’s Top Doctors by HTexas Magazine 2015, 2016 and 2017, 2018
Texas Monthly’s 2015 Rising Stars
Top Doctors by Houstonia Magazine 2016, 2017, 2018
Women of the Year in Science by Sucesos News Paper & Solo Mujeres Magazine Houston

Dr Markan
Top Doctors by Houstonia Magazine 2018

Both doctors were featured as the Faces of Endocrinology in the Houstonia Magazine > Read Article

We specialize in the diagnosis and treatment of disorders of the endocrine system, diabetes, and metabolic disorders.

We are located just outside the Texas Medical Center on the Texas Women’s Hospital campus.

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Rocio A. Harbison, MD, FACE

Rocio A. Harbison, M.D.

Dr. Harbison is board certified in Endocrinology. She graduated from the University of Puerto Rico. She completed her Internal Medicine Residency at St Vincent’s Hospital in Indianapolis, Indiana and her Fellowship in Endocrinology, Diabetes, and Metabolism at the University of Michigan in Ann Arbor, Michigan. She was faculty at the University of Texas Health Science Center Houston and worked in a large group practice prior to founding Advanced Endocrinology and Diabetes Clinic.

Dr. Harbison believes that the patient physician relationship is a partnership focused on the long-term health and well being.
Dr Harbison is fluent in English and Spanish.

Meet Our Staff

Reshma Markan, MD

Reshma Markan, MD

Dr. Reshma Markan is double board certified in Endocrinology, Diabetes and Metabolism and Internal medicine.

She completed her Residency in Internal medicine and Fellowship in Endocrinology at Froedtert and Medical College of Wisconsin, Milwaukee.

Her clinical interest includes treating patients with Type 1 and 2 Diabetes Mellitus, Gestational Diabetes, Thyroid disease, Polycystic ovarian syndrome, Male Hypogonadism , Parathyroid Disorder, Pituitary and Bone disease. She is very passionate about weight loss.

Dr. Markan believes that the foundation of the doctor-patient relationship is based on trust and mutual respect. She believes in listening to her patients and communicating with them and the few extra minutes it takes to truly understand a patient’s difficulty in managing the illness is large part of treating the entire patient.

Dr.Markan is fluent in English, Hindi and Punjabi


Insurance Information

We accept most major types of insurance. To confirm that we accept your insurance plan please call our office at 713-796-9466 and our staff will assist you. You will be charged your designated insurance co-pay amount at the time of your visit.



P (713) 796-9466
F (713) 796-9467
7400 Fannin Street, Suite 855
Houston, TX 77054