About Us

Know About Huntsville Renal Clinic

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James Smelser, MD, FACP

Dr Smelser is Board certified in Nephrology and Internal Medicine.

James Smelser, MD, FACP

Dr Smelser is Board certified in Nephrology and Internal Medicine. He has been a practicing Nephrologist in Huntsville since 1995.

Dr Smelser graduated Summa Cum Laude from Lipscomb University with a degree in biochemistry. He received his medical degree from the University of Alabama -Birmingham School of Medicine, then completed his Internal Medicine residency and Nephrology fellowship at Mayo Clinic in Rochester, MN.
Dr Smelser is a member of the Alabama Kidney Foundation, American Medical Association, Madison County Medical Society, National Kidney Foundation, American Society of Nephrology and a Fellow of the American College of Physicians.

He specializes in chronic kidney disease, hypertension, polycystic kidney disease, metabolic diseases and all forms of dialysis. He is the medical director of the Ultrafiltration program at Huntsville Hospital.

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Larry Walker, M.D.

Dr Walker is Board certified in Nephrology and Internal Medicine.

Larry Walker, M.D.

Dr Smelser is Board certified in Nephrology and Internal Medicine. Dr Walker joined Huntsville Renal Clinic in 2001.

Dr Walker graduated from the University of Alabama with a degree in chemical engineering. He received his medical degree from the University of Wisconsin School of Medicine. He returned to Alabama to complete his residency in Internal Medicine, followed by a Nephrology fellowship at the University of Alabama-Birmingham.

Dr Walker is a member of Madison County Medical Society and the Renal Physicians Association.
He specializes in chronic kidney disease, polycystic kidney disease, hypertension and all forms of dialysis.

Saad Rahman, M.D.

Dr Rahman is Board Certified in Nephrology and Internal Medicine.

Saad Rahman, M.D.

Dr Rahman is Board Certified in Nephrology and Internal Medicine. Dr Rahman joined Huntsville Renal Clinic in 2005.

Dr Rahman completed his Internal Medicine residency at SUNY in Buffalo, NY, and his Nephrology fellowship at St Louis University, in St Louis MO and the University of Pittsburg, PA.

He specializes in chronic kidney disease, hypertension, polycystic kidney disease, metabolic diseases, and all forms of dialysis.

Syed Hammad Alam, MD, CHS

Dr Alam is Board Certified in Internal Medicine and Nephrology.

Syed Hammad Alam, MD, CHS

Dr Alam specializes in the management and treatment of AKI, CKD, ESRD, glomerulonephritis, electrolytes and acid/base disorders and renal transplant. Dr Alam has authored several published articles on kidney disease and is a Certified Hypertension Specialist (CHS)

Dr Alam received his medical degree from the DOW University of Health Sciences (DUHS) in Pakistan. He later served as a General Medicine Practitioner in the Maldives before moving to Qatar where he completed Internal Medicine training at the HAMAD Medical Corporation in the affiliation with the Weill Cornell Medical School. Dr Alam completed a second Internal Medicine residency as well as his nephrology fellowship from the SUNY Upstate Medical Center in Syracuse, New York.

Dr Alam lives in Huntsville with his wife, son and daughter. He loves hiking, writing, photography and spending time with his family.

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Heather Haley, D.O.

Dr Haley is Board Certified in Nephrology and Internal Medicine.

Heather Haley, D.O.

Dr Haley is Board Certified in Nephrology and Internal Medicine. She joined Huntsville Renal Clinic in 2010.
Dr Haley graduated from the University of South Alabama with a degree in Biomedical Science. She then earned her medical degree from the West Virginia School of Osteopathic Medicine. She returned to Alabama to complete her Internal Medicine residency with the Baptist Health system in Birmingham, where she served as Chief Resident. Upon completion, she went on to do her Nephrology fellowship at the Medical University of South Carolina in Charleston.

Dr Haley is a member of Madison County Medical Society. She specializes in chronic kidney disease, hypertension, polycystic kidney disease, metabolic diseases and all dialysis modalities.

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Hafiz Zafar Ahmed Mahmood, MD

Dr Mahmood is Board Certified in Internal Medicine and Nephrology.

Hafiz Zafar Ahmed Mahmood, Md

Dr. Mahmood joined Huntsville Renal Clinic in August 2024. Prior to relocating to Huntsville, he worked in a private practice setting in Pennsylvania.

He completed both his Internal Medicine residency and Nephrology fellowship at Penn State Hershey Medical Center. Originally from Lahore, Pakistan, Dr. Mahmood completed his initial medical training there before moving to the United States for postgraduate education.

He is board certified in Internal Medicine and Nephrology. He is also a certified Hypertension Specialist.

Dr. Mahmood now resides in Huntsville with his wife and two children.