Ali Mohammed, MD, FACP, FASN

President

Dr. Mohammed has been with the practice since 2002 and currently serves as Vice President of the practice. He completed his Nephrology fellowship at Henry Ford Hospital and residency at Michigan State University. He is the Clinical Assistant Professor at Michigan State University, Clinical Faculty at Genesys Regional Medical Center, Hurley Medical Center and McLaren Regional Medical Center in Internal Medicine and Family Practice. Resident and medical student teaching as Rounding Faculty & Didactic Lectures. He is currently the Medical Director for Davita Dialysis at Park Plaza, Flint PD, Fenton and Flushing locations.

Vaibhav Sahni, MD

Vice President

Dr. Sahni has been with the practice since July of 2011. He completed his fellowship in Nephrology at Northwestern University and Feinberg School of Medicine in Chicago. He is board certified in Nephrology and Internal Medicine and also has American Society of Hypertension certification as a specialist in clinical hypertension. Dr. Sahni has been an active clinical researcher and has written several papers in peer reviewed journals as well as book chapters in the field of electrolyte abnormalities and Nephrology.

Read Dr. Sahni's papers on PubMed

Yaseen Hashish, MD, FASN

Dr. Hashish has been with the practice since 2008. He completed his medical training in Damascus, Syria. He is board certified with the American Board of Internal Medicine and the American Board of Nephrology. He is currently Medical Director at FMC Hemodialysis in Flint and Owosso.

Manjit Grewal, MD, FACP, FASN

Dr. Grewal has been with the practice since 1999 and currently serves as the President of the practice. He completed his fellowship at Wayne State University, Division of Nephrology. He is board certified with the American Board of Internal Medicine, ABIM-Nephrology and Hypertension, "Specialist in Clinical Hypertension, American Society of Hypertension. He serves as Section Chief, Division of Nephrology at Genesys Regional Medical Center and is Medical Director of RRC Dialysis Davison, Davita Dialysis, Ballenger Pointe, Davita Home Program and Hemodialysis Unit in Grand Blanc.

Genevieve Sierminski, MD, FASN

Dr. Sierminski has been with the practice since 2008. She did her Nephrology Fellowship at St John Hospital. She is board certified in Internal Medicine and Nephrology. She received recognition for Chief Fellow-Nephrology - St John Hospital, Chief Resident-Internal Medicine - University of Florida, Resident of the year-Internal Medicine-University of Florida and Consumers Research Council of American, American Top Physicians 2007. She is currently Medical Director of Davita Davison.

Sergio Ponze, MD

Retired September 2019

Dr. Ponze has been with the practice since 1995. He completed his fellowship in Nephrology at the University of Michigan, Ann Arbor. He is Board Certified in Internal Medicine. His memberships include Peruvian College of Physicians, American Medical Association, American Society of Internal Medicine, Michigan State Medical Society, Genesee County Medical Society and Renal Physicians Association. He has also had a publication; Familial Azotemia, New England Journal of Medicine, January 1978.

Kia McAlindon, RN, MSN, FNP-BC

Kia has been working as a Nurse Practitioner with Nephrology and Hypertension since 2009. She received her MSN from the University of Michigan and is a Board Certified ANCC Family Nurse Practitioner since 2000. She worked as a Registered Nurse at Genesys Medical Center from 1995-2000. As a Nurse Practitioner for Nephrology and Hypertension Kia dedicates herself to our dialysis patients and works closely with the physicians to give each patient the best quality of care.

Kunal Singh, MD

New to the grouip

We are excited to announce that Kunal Singh, MD has joined our group in August of this year. He will be seeing patients in our Flint and Owosso office.