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Ypsilanti, MI 48197
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Dr. Jeffrey Sanfield, has been selected for Best Doctors in America

Dr. Jeffrey Sanfield Receives 2010 Top Doc Award from Hour Detroit Magazine!



Ann Arbor Endocrinology & Diabetes Associates Doctors
In an ongoing effort to meet the needs of our patients, the AAEDA practice is continually growing.


Jeffrey A. Sanfield, M.D., F.A.C.P., C. D. E.
Dr. Jeffrey Sanfield holds many titles; most currently being Department Chair of Internal Medicine at St Joseph Mercy Hospital, a title he has held for more than seven years.

Having received his undergraduate degree at the University of Michigan, Dr Sanfield graduated medical school in 1981 from Wayne State University, and was an Endocrinology Fellow at the University of Michigan Hospital from 1984 to 1986. Dr. Sanfield is board certified in Internal Medicine, Endocrinology and Metabolism, and is also board certified as a Diabetes Educator. Having received many honors and awards over the years, Dr. Sanfield was recently named "Top Doc" in the Detroit area, and voted as a "Top Doctor in America" by Consumer Checkbook ~ both of which speak to his passion for his patients. Dr. Sanfield has participated in many clinical trials, and his major focus is on thyroid disorders, insulin pump therapy, adrenal disorders including adrenal masses, and pituitary tumors.

Dr. Sanfield is a native Michigan resident originally from Mt, Clemens, and lives with his family in Ann Arbor.


Anuradha L. Puttagunta, MD, F.A.C.P.
Dr. Puttagunta did her training in Endocrinology and Metabolism at the University of Alberta in Edmonton, Canada. During her training in Canada she also spent an additional two years in the Department of Physiology at the University of Alberta. She received the Alberta Heritage Foundation for Medical Research Studentship Award in 1990. She is a member of the American College of Physicians, American Diabetes Association, Royal College of Physicians and Surgeons of Canada, and the Endocrine Society. She is also a Fellow in the American College of Clinical Endocrinology. For the last seven years she has been practicing in Midland, Michigan where she has taken care of patients of all ages who have endocrinologic problems. The center for which she and her associate practiced is considered one of the largest referring centers for Endocrinology in mid Michigan. It is well recognized for its excellence in the care of patients with diabetes and endocrinologic disorders.

Dr. Puttagunta is board certified in Internal Medicine and Endocrinology. Her special clinical interests include: Adrenal and pituitary disorders, growth, development and endocrinologic conditions involving adolescents, and patients with diabetes including pump patients. She has specific training in thyroid ultrasound imaging, so she can provide ultrasound imaging and interpretation in patients with thyroid disorders.

Dr. Puttagunta recently moved from the Midland area with her husband and three children. She will begin practicing at Ann Arbor Endocrinology and Diabetes Associates in September of 2006.


Anita Lopes Repp, M.D.
Dr. Repp received her Bachelor of Science in Biochemistry from Michigan State University and her Medical Degree from the University of Michigan. She completed her internal medicine training at the University of Virginia and fellowship in endocrinology and metabolism at Wayne State University in Detroit. Dr. Repp enjoys teaching and has assisted in courses at both the University of Michigan and Wayne State University medical schools. In addition, she has previously worked at St. Joseph Mercy Hospital as a hospitalist.

Dr. Repp is board certified in Internal Medicine and Endocrinology. She is certified as a Clinical Densitometrist and is board eligible in Endocrinology and Metabolism. Research projects during residency and fellowship have fostered her clinical interests in thyroid disease, gestational diabetes, and polycystic ovarian syndrome.

Dr. Repp lives in Canton, Michigan. She joins Ann Arbor Endocrinology & Diabetes Associates in February of 2008.

Photo of Dr Sima Saberi

Sima Saberi, M.D.
Dr. Saberi received her Bachelor of Science in Biology from the University of Michigan and a medical degree from Wayne State University.
She completed her residency in internal medicine training as well as a fellowship in metabolism, endocrinology and diabetes at the University
of Michigan
in Ann Arbor. Dr. Saberi has published on the topic of Diabetes, and has served as a researcher on characteristics associated with stress induced hyperglycemia in cardiovascular surgery patients.

Dr. Saberi lives in Ann Arbor, Michigan. She joined the Ann Arbor Endocrinology & Diabetes Associates staff in August of 2009.

Photo of Dr Sima Saberi

Suma Amarnath, M.D., M.P.H.
Dr. Amarnath received her Bachelor of Science in Biology from the University of Michigan as well as her medical degree and Masters in Health Policy and Administration, (MD/MPH).

She completed a residency in internal medicine at Boston University, and in primary care internal medicine at Yale.  She is licensed in the state of Connecticut. In 2009 she returned to the University of Michigan as an Endocrinology Fellow.

Dr. Amarnath has research credentials from the Yale School of Medicine, in departments of Endocrinology as well as Occupational Medicine. At UofM she co-authored in the Journal of the ABSME and has done research in pediatrics studying the effects of iron deficiency on dopamine receptors. 

Dr.Amarnath lives in Ann Arbor. She joined Ann Arbor Endocrinology in September 2011.


Timothy W. Bodnar, M.D.
Dr.Timothy W.Bodnar  received his Bachelor of Science in Human Biology from Michigan State University and his M.D. from the University of Michigan Medical School. He completed his postgraduate medical training at the University of Michigan Health System: Residency in Internal Medicine (including serving an additional year as Chief Medical Resident) and Fellowship in Metabolism, Endocrinology, and Diabetes.

During residency and fellowship he participated in research studies involving the management of diabetes in the hospital setting and was active in teaching medical students and residents. He is published in several journals including The Journal of Clinical Endocrinology & Metabolism and The Journal of Hospital Medicine. Dr.Bodnar enjoys all aspects of endocrinology with special interest in thyroid disease, bone and mineral disorders, and preventive care.

Dr.Bodnar is a Michigan native and lives in Plymouth with his wife and two children. He joined Ann Arbor Endocrinology in July 2014.

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