Hillcrest

4060 Fourth Ave Suite 220  |  San Diego, CA 92103

Phone 619-299-2350  |  Fax 619-297-8379

Joel Baranski, M.D.
Dr. Baranski joined Balboa Nephrology Medical Group in 1999. He practices in the Hillcrest area; specializing in kidney diseases which includes hemodialysis patients at both FMC and DaVita Dialysis units.

Dr. Baranski attended medical school at The Medical College of Wisconsin where he obtained his Doctor of Medicine degree. After completing his residency at Scripps Mercy Hospital, he completed his Nephrology fellowship training at the University of California San Diego.

He was born in San Diego and loves the ocean and environment. He is a regular surfer and diver but his greatest love is his two children.
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John Hammes, M.D.
Dr. Hammes joined Balboa Nephrology Medical Group in 2013. He practices in the Hillcrest and Coronado area; specializing in kidney diseases which includes hemodialysis patients at both FMC and DaVita Dialysis units.

Dr. Hammes attended medical school at the Uniformed Services University of the Health Science F. Edward Herbert School of Medicine in Bethesda, Maryland, where he obtained his Doctor of Medicine degree. After completing his residency at the Naval Medical Center San Diego, he completed his Nephrology fellowship training at the University of California San Diego.

When not caring for patients, Dr. Hammes spends a lot of time outdoors running, surfing, and cycling with his children. He likes to fish, play ukulele, cook, and tinker with his 1990 VW van.
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Viet Nguyen, M.D.
Dr. Nguyen joined Balboa Nephrology Medical Group in 2020. He practices in the Hillcrest and Coronado area; specializing in kidney diseases which includes chronic kidney disease and dialysis.

Dr. Nguyen attended medical school at the Medical College of Virginia in Richmond, Virginia where he obtained his Doctor of Medicine degree. After completing his residency at the Scripps Mercy Internal Medicine Residency in San Diego, he completed his Nephrology fellowship training at the University of California San Diego.

In his free time, Dr. Nguyen spends time with his family and enjoys exploring San Diego.
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Theodore Thomas, M.D.
Dr. Thomas joined Balboa Nephrology Medical Group in 1989. He practices in the Hillcrest area; specializing in kidney diseases which includes hemodialysis patients at both FMC and DaVita Dialysis units.

Dr. Thomas attended medical school at the University of Colorado. After completing his residency at West Virginia Hospital, he completed his fellowship training at the Cleveland Clinic Foundation.

He and his wife, Inez have two daughters. Their oldest daughter works as a venture capitalist at Precursor Ventures in San Francisco and their youngest daughter and her husband live in Oakland where she is completing her MBA studies at UC Berkeley. In his free time he enjoys hiking, reading and traveling.
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Cindi Polis, R.N.
Cindi Polis joined Balboa United in 2020 as the new Care Manager & Education Nurse. Cindi works with CKD patients to help optimize a healthier lifestyle and educate patients on different modality options for dialysis. She supports the BNMG clinics covering San Diego County.

Cindi has her BSN in nursing from National University, San Diego, CA and her Business Degree from Golden Gate University, San Francisco, CA.

In her free time, she enjoys cooking, walking to the beach, swimming in the ocean, spending time with her family and enjoying beautiful sunsets.
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