Our Nephrologists

Dr. Agraharkar

Dr. Mahendra Agraharkar is a highly accomplished, knowledgeable, and compassionate physician. He is well known nationally and around the world. He has practiced medicine in India, Lebanon, Saudi Arabia, England, Canada, and several states of the United States. He speaks several languages fluently including English, Marathi, Hindi, Urdu, Telgu, and Arabic. He is married to Dr. Aruna Agraharkar who is a well-reputed physician specialized in Internal Medicine and Geriatrics.


His son, Vishal Agraharkar, is a graduate from Williams College in Massachusetts, a law school graduate from Columbia Law School and now a Cochran Fellow. He is currently practicing law in New York, NY.  


His daughter, Shilpa Agraharkar, is a physician psychiatrist from New York School of Medicine, now specializing in child and adolescent psychiatry at NYU.

Dr. Seerangan

Geetha Seerangan, MD, is a graduate of Stanley Medical College in India. She trained in Internal Medicine at Monmouth Medical Center, a Drexel University affiliated teaching hospital in New Jersey. Dr. Seerangan continued her Nephrology and Hypertension fellowship at Texas A&M Scott and White Hospital in Temple, Texas and moved to the Houston area upon graduation to begin her nephrology practice.

Dr. Seerangan joined Space City Associates of Nephrology in 2012 and is now a partner in the practice. Her practice specializes in managing hypertension issues in both hospital and clinic settings. She is passionate about providing the best possible attention and quality of care to her patients including those on permanent dialysis.

Dr. Seerangan received the ‘Best Resident’ award given to physicians who demonstrate consistently superior performance throughout the training period. She has published scholarly articles in peer-reviewed international journals.

Dr. Seerangan lives in Friendswood and enjoys cooking and music. She is board certified in Internal Medicine and Nephrology.

Dr. Mutnuri

Dr. Sangeeta Mutnuri is passionate about the care of her patients and believes that going the extra mile for those in her care makes her a better doctor, mother, wife, and person. Growing up in India in a family of academicians and physicians, the passion to pursue a worthy, challenging, and demanding profession was instilled early on in her childhood.

After completing medicine in India, she graduated from the UTMB internal medicine residency program as well as the nephrology fellowship program. This in turn has allowed her to care for patients from a wide cross-section of society. At work she is proud to be part of a team of highly committed, passionate doctors at the Space City Associates of Nephrology where, each day, she is free to pursue her childhood passion - practicing medicine and helping people.

With her husband working as a business analyst in downtown Houston, this beautiful city has become her home base. While fluent in several languages, she is most at home when exchanging sweet babbles with her 8-month old baby girl.

Rohan Patankar, DO

Rohan Patankar, DORohan Patankar, DO

Dr. Rohan Patankar graduated from Lake Erie College of Osteopathic Medicine - Bradenton. Dr. Patankar completed his Internal Medicine residency at Palmetto General Hospital in Miami and his Nephrology fellowship at the University of Texas Medical Branch. He has also completed a course in hyperbaric medicine. He is fluent in English, Spanish, Marathi, Hindi and Gujarati.

He is a published author and has presented at multiple conferences notably the American Transplant Congress as well as American Society of Nephrology.

In his spare time, he enjoys playing cricket, golf and basketball. He also plays 5 musical instruments. He is a very passionate individual and is always willing to go the extra mile for his patients. He is board certified in Internal Medicine and board eligible in Nephrology