Sierra Endocrine Associates

Endocrinology, diabetology & Metabolism
Joseph B Hawkins, Jr. MD, FACE

Serving the San Joaquin Valley

7330 N Millbrook Ave

Fresno, CA 93720




Dr. Hawkins is board certified in Diabetology, Endocrinology, and Metabolism. He is a Fellow of the American College of Endocrinology. After completing his training at Duke University Medical Center in 1988, he returned to Fresno where he taught at Valley Medical Center and conducted clinical research. He founded Sierra Endocrine Associates in 1993. Dr. Hawkins has long held a special interest in Osteoporosis and bone metabolism. He has extensive knowledge in the diagnosis and treatment of metabolic bone disorders. He is also the leading authority in Osteoporosis in the Central Valley. Most who enter the Sierra Endocrine Associates office notice the many photographs decorating the interior space. Most if not all the photos hanging in the building were taken by Dr. Hawkins who enjoys traveling and hiking and through his photography capturing images of the world. You can see more of his work on his photo website .


Mr. Morales is an Endocrine Nurse Practitioner and a Certified Diabetes Educator. He earned his undergraduate and graduate degrees at California State University, Fresno. He served as the diabetes program coordinator at the University Medical Center in Fresno for ten years, where he managed inpatient and outpatient diabetes, taught physicians and nurses, and conducted clinical research. He joined Sierra Endocrine Associates in 1994. He is a regular lecturer for California State University, Fresno and conducts other professional education. He is a specialist in intensive diabetes management, including insulin pump therapy and pregnancy counseling.

Chhaya Makhija, MD

Dr. Makhija is board certified in Endocrinology, Diabetes and Metabolism. She completed her Internal Medicine at Hackensack UMC Mountainside Hospital, NJ and Endocrinology fellowship at University of Nebraska Medical Center. She has publications related to Thyroid cancer, Adrenal disorders and Vitamin D in renowned journals. Dr. Makhija has special interest in endocrine disorders in young adult patients’ particularly early onset Type 2 Diabetes and Adrenal gland disorders. While treating her patients, she loves to invest time in educating them about mindful eating and positive thinking. She also enjoys teaching endocrinology to physicians in training. Dr. Makhija joined Sierra Endocrine Associates in 2015.

Naseem Eisa, MD

Dr Eisa joined Sierra Endocrine Assocates in 2017 after completing his fellowsip training  in Endocrinology at the University of California, Davis.

Chelsea Flowe, MSN, NP

Ms. Flowe joined Sierra Endocrine Associates in 2018. She has over 10 years of experience as and Endocrine Nurse Practitioner. She recieved her graduate degree from California State University, Fresno in 2005. Early in her family practice career . she led classes and support groups for patients with diabetes melitus. She also spent a few years managing cardiac disease states, then permanently moved to care of patients with Endocrine disease states with a focus on management of diabetes mellitus, thyroid conditions, metabolic syndrome, obesity and osteoporosis.. She has been a sub-investigator of research trials involving diabetes mellituys, obeisth, lipid managment, and peripheral arterial disease. She provides expert knowledge of insulion pump and/or continuous goucose sensors for management of diabetes melltus. She aims to provide individulaized education and psychological support unique to each patient she encounters. In he spare time, che cared for her husband and three children. likes jogging and reading.

Sheri Hyatt, PA-C

Ms. Hyatt has over 15 years experience in primary care and joined Sierra Endocine Associates in 2019.