After graduating from Union College in Schenectady, New York and Albany Medical College in Albany, Dr. Lee completed an Internal Medicine Residency at Maine Medical Center in Portland, Maine and an Endocrinology, Metabolism and Nutrition Fellowship at The University of Washington School of Medicine in Seattle. Dr. Lee then joined the faculty at Tulane University School of Medicine in New Orleans for three years before joining Kelsey-Seybold Clinic in April of 2000. Dr. Lee is director of the Primary Prevention Lipid Clinic (PPLC). The mission of the PPLC is to improve the quality of care provided to Kelsey-Seybold patients with diabetes and dyslipidemia who don't have a history of cardiovascular disease. The PPLC is also designed to help patients with difficult-to-treat dyslipidemia, a disruption in the amount of lipids in the blood, reach their targeted cholesterol goals.

Dr. Muhammad graduated from the University of Karachi in Pakistan in 1986. In 1991, he went to Chicago's Cook County Hospital to complete his Internal Medicine residency. For his fellowship, Dr. Muhammad went to the prestigious Brown University in Providence, Rhode Island. When Dr. Muhammad is not caring for patients, he enjoys reading and volunteering with the American Diabetes Association.

Amar Arunachalam, MD, is a graduate of the University of Miami Miller School of Medicine in Miami, Florida, where he earned his medical degree in 2019. He remained in Miami to complete a residency in Internal Medicine at Jackson Memorial Hospital/University of Miami in 2022. After relocating to Houston, Dr. Arunachalam completed a fellowship in Endocrinology, Diabetes, and Metabolism at the McGovern Medical School at the University of Texas Health Science Center at Houston in 2024. Fluent in English and Spanish, he joined Kelsey-Seybold's Endocrinology department in December 2025. Patients see Dr. Arunachalam for a wide variety of endocrine issues, including diabetes, thyroid disease, osteoporosis, and PCOS, and more.

Niyati Hariyani is a certified physician assistant and a certified diabetes care and education specialist (CDCES). She's also board certified in advanced diabetes management and is certified in fracture liaison service. She earned her Bachelor of Science degree in biology at Houston Baptist University in 2013 and her Master of Physician Assistant Studies (MPAS) from The University of Texas Medical Branch at Galveston in 2015. Before joining Kelsey-Seybold in September 2022, Niyati spent five years as a physician assistant at Sugar Land Endocrine & Thyroid, where she diagnosed and treated patients with endocrine conditions.

Faiza Mubeen, MD, joined Kelsey-Seybold Clinic as an endocrinologist in August 2023. She obtained her medical degree from Foundation University Medical College in 2009. Dr. Mubeen then completed her internship and residency at Texas Tech University Health Sciences Center in 2021. In addition, Dr. Mubeen completed her fellowship in endocrinology, diabetes, and metabolism at Houston Methodist Hospital in 2023. She is a member of the American Association of Clinical Endocrinology, American Thyroid Association, Endocrine Society, Harris County Medical Society, and Texas Endocrinology Association.

Mitali Dave, MD, attended the Dr. D. Y. Patil Medical College in Mumbai, India, earning his medical degree in 2010. She then relocated to Oklahoma City, Oklahoma, completing her Internal Medicine Residency at the University of Oklahoma Health Sciences Center in 2014. Dr. Dave remained there to complete a fellowship in Endocrinology, Diabetes and Metabolism in 2016. She joined Kelsey-Seybold in October 2025 as an experienced and double board-certified endocrinologist who is trilingual in English, Gujarati, and Hindi. As an endocrinologist, she treats patients for a variety of endocrine concerns, including diabetes, thyroid disorders, pituitary disorders, adrenal disorders, and osteoporosis.

Dr. Vinita Bhagia is the Chief of Endocrinology at Kelsey-Seybold Clinic. She earned her Bachelor of Medicine and Bachelor of Surgery degrees in 2001 at Lady Hardinge Medical College in New Delhi, India. She completed her Internal Medicine residence at The University of Texas Medical Branch at Galveston in 2007, followed by her fellowship in Diabetes, Endocrinology, and Metabolism in 2009, when she served as Chief Fellow.

Son Nguyen, DO, completed his Doctor of Pharmacy at the University of California San Diego in 2009 and then went on to earn his Doctor of Osteopathic Medicine at Des Moines University in 2017. He then completed his residency in Pediatrics and Internal Medicine at Albany Medical Center in 2021. By keeping open communication and an understanding of each patient's unique needs, Dr. Nguyen provides general endocrine care for both pediatric and adult patients. He diagnoses and treats a broad range of endocrine conditions, including hyperthyroidism, hypothyroidism, and endocrine cancers. Dr. Nguyen joined Kelsey-Seybold in December 2023.

Dr. Jongoh Kim is a Houston Endocrinologist with expertise and passion for diabetes. Formerly, he led diabetes and endocrine practice at Baylor College of Medicine, Houston, Texas. He manages diabetes, general endocrinology, and internal medicine conditions. He is caring and always listens to his patients. Dr. Kim wants to solve your health problems together as your “Health Companion.” He is Board Certified in Internal Medicine and Endocrinology.