Learn about our physicians and nurse practitioners
Dr. Alex David
Dr. Mary Jo Shaver
Dr. Mary Jo Shaver is a graduate of Arkansas State University in Jonesboro, Arkansas, where she earned a B.S. degree in Chemistry in 1988. She then attended the University of Arkansas for Medical Sciences in Little Rock, Arkansas, where she completed her residency in the Department of Internal Medicine in 1996. She completed her Fellowship in the Division of Nephrology in 1998.
She was an instructor for the Division of Nephrology at UAMS until 1999, after which she became an Assistant Professor of Medicine for the Division of Nephrology at UAMS. She has served as the Director of Hemodialysis at UAMS, as well as the Program Director for the Nephrology Fellowship Program for the University of Arkansas for Medical Sciences and Central Arkansas Veterans Healthcare Department.
Dr. Shaver obtained her Board Certification in Internal Medicine in 1996 and her Board Certification in Nephrology in 2001. She is a member of the American Society of Internal Medicine, Arkansas Medical Society, American College of Physicians Counsel member Alpha Omega Alpha Honor Society, American Diabetes Association, American Society of Nephrology, National Kidney Foundation, and the American College of Physicians.
Dr. Shaver is married and has four children.
Dr. Robert Camferdam
Dr. Robert Camferdam is a graduate from the University of Arkansas at Little Rock where he earned a degree in Biology. He attended medical school at Ross University where he graduated summa cum laude. Dr. Camferdam completed his residency in Internal Medicine at the University of Arkansas for Medical Sciences in 2010 and then completed his fellowship training in Nephrology from UAMS in 2012, where he was co-chief fellow.
During his training he served as a research assistant at UAMS in the department of microbiology. At Ross University he worked as a supplemental instructor preparing college students for medicine careers. He was also the head teaching assistant during his time at Ross University.
Since leaving UAMS he continues to teach, working with the residency program in Internal Medicine at Unity Health.
He joined Nephrology Associates, PA in 2013 and is Board Certified in Internal Medicine and Nephrology. He enjoys spending time with his wife and two children. He enjoys golf, sailing, and traveling.
Dr. Stefan Hemmings
Dr. Stefan Hemmings is a 2003 graduate of the Faculty of Medical Sciences, the University of the West Indies, Mona Campus in Kingston, Jamaica. His medical education was conducted on a full academic scholarship. During his tenure, he received awards for Research, academic achievement and for Service.
He came to the United States for advanced medical training in 2013, starting in Internal Medicine at the Howard University Hospital in Washington, DC. During that time he was inducted as a resident member to Alpha Omega Alpha Medical Honors Society, appointed one of the Assistant Chief Residents in his final year, as well as being recognized as the most outstanding final year resident in 2016. He was then accepted to the Johns Hopkins Hospital in Baltimore for training in Nephrology, a Fellowship he completed in June 2018. He has presented research posters at the National Kidney Foundation and the American Society of Nephrology Annual Meetings during his training and he also co-authored a book chapter on Sports Medicine.
He joined Nephrology Associates, PA in July 2018 as his start to independent clinical practice. He sees patients at our locations in North Little Rock and Conway. He has interests in Chronic Kidney Disease, Hypertension and Acute Kidney Injury.
Dr. Gregory Mock
Dr. Mock graduated from South Dakota State University in Brookings, South Dakota with a B.S. degree in Biology. He attended the University of Minnesota School of Medicine in Minneapolis, Minnesota. He completed his residency in Internal Medicine in 1994 from William Beaumont Army Medical Center in El Paso, Texas and later completed his fellowship training in Nephrology in 1997 from Walter Reed Army Medical Center in Washington, D.C. Prior to joining Nephrology Associates, PA, he served as a nephrologist in Columbus, Mississippi. He has served as Chief Medical Resident/Staff at Internal Medicine Clinic in El Paso, Texas, Clinical Instructor of Department of Medicine for the F. Edward Hebert School of Medicine in Bethesda, Maryland, and Assistant Chief of Nephrology Services at William Beaumont Army Medical Center in El Paso, Texas.
Dr. Mock is certified by the American Board of Internal Medicine as well as American Board of Internal Medicine Nephrology Subspecialty Board. He is a member of the American Society of Nephrology and International Society of Nephrology.
Dr. Mock serves on the Board of Directors for Intra-American Restoration Corporation, and has previously served on the Board of Directors for Maple House Community Non-profit Organization.
Emily Allen, APRN
Emily Allen is a certified family nurse practitioner who specializes in nephrology. Her care at Nephrology Associates, PA is centered on those who have chronic kidney disease stages III-V.
Emily completed her Bachelor of Science in Nursing at Arkansas State University - Jonesboro and then earned her Master of Nursing Science degree at the University of Arkansas for Medical Sciences. She holds a national certification with The American Academy of Nurse Practitioners (AANP).
Mary Ann Ross, RNP
Bio and photo coming soon!
Dr. David graduated from Arkansas State University in 1985 with B.S. degrees in Biology and Med Tech. He then attended the University of Arkansas for Medical Sciences in Little Rock, Arkansas where he completed his medical residency in 1993. He became Board Certified in Internal Medicine in 1993. He completed his Nephrology Fellowship from 1993 to 1995.
Dr. David is our senior partner and has been with us since 1995. He is a member of the Arkansas Medical Society, Pulaski County Medical Society, and the Renal Physicians Association. He has served as the Ethics Committee Chairman at Baptist Memorial Medical Center, Medicine Chair at Baptist Memorial Medical Center, and has also served as a member on the Pharmacy and Therapeutics Committee. He is Chairman of the Board of the Little Rock Adventist Academy in Little Rock, Arkansas. He has been appointed by the Governor of Arkansas to the Arkansas Kidney Disease Commission, on which he has served since 2019.
Dr. David is married and has three children. His interests include music, tennis, photography, and golf.
Dr. Beenu Kaw
We are pleased to welcome Dr. Beenu Kaw to our practice. She comes to us from Michigan.
Bio coming soon!
Dr. Vikas Vujjini
Dr. Vikas Vujjini is a 2008 graduate in medicine from MNR Medical College and Hospital/NTR University of Health Sciences, India. He came to the United States in 2011 for advanced medical training. He gained clinical and research experience working at several reputable institutions, most notably MD Anderson Cancer Center followed by The Johns Hopkins School of Medicine.
His most significant research accomplishment was in Transplant Nephrology at The Johns Hopkins School of Medicine where as a research fellow he published several articles on post-transplant glomerulonephritis. He went on to complete a residency in Internal Medicine at Sinai Hospital of Baltimore which is an affiliate of Johns Hopkins. Post his residency he was appointed as the Chief Resident for Internal Medicine for one year. During this time, he was also appointed as the Co-Chair of the Chief Residents Association of Baltimore by the Maryland Chapter of the American College of Physicians. He further pursued fellowship training in Nephrology at the prestigious University of Pennsylvania which he completed in June 2022. He is a member of the American Society of Nephrology, National Kidney Foundation, American College of Physicians and Renal Physicians Association. He has presented posters on complex kidney conditions and conducted Quality Improvement projects during his training. He is board certified in Internal Medicine.
He joined Nephrology Associates, P.A. in July 2022 as his start to independent clinical practice. He sees patients at out locations in Conway. His interests include, Home Dialysis, Acute Kidney Injury, Chronic Kidney Disease and Transplant.