Kevin Muelken, M.D.
Dr. Muelken received his medical degree and
completed his Nephrology fellowship at the
University of Minnesota. He joined the practice in
2003. Dr. Muelken and his family enjoy the outdoors
and spend time skiing and hiking.
Mark Teruel, M.D.
Dr. Teruel and his family moved to Fort Collins and
joined The Nephrology Clinic in August 2005. He
received his medical degree from the University of
Cincinnati College of Medicine and completed his
nephrology fellowship at the University of Vermont.
Teruel takes advantage of the wonderful outdoor
opportunities in Colorado and enjoys skiing, biking, and running.
Jason Merritt, M.D.
Dr. Merritt joined the practice in 2007 after practicing in Virginia for a few years. He graduated
from Yale University School of Medicine and completed his nephrology fellowship at the
University of Virginia in Charlottesville. Dr. Merritt enjoys skiing and traveling.
Nilesh Ahuja, M.D.
Dr. Ahuja attended medical school in Syracuse New York and completed his nephrology
fellowship at the University of Colorado in Denver. He enjoys snowboarding, kayaking, biking
and playing soccer. Dr. Ahuja joined the practice in 2012.
Will Lefler, M.D.
Dr. Lefler joined the practice in August 2014 after completing his Nephrology fellowship at Duke
University. He received his medical degree from the Medical College of Georgia. Dr. Lefler and
his wife enjoy backpacking, running and other outdoor activities.
Ashwin Ganta, M.D.
Dr. Ganta completed his nephrology fellowship at Vanderbilt University in Nashville, Tennessee.
He moved with his family to Fort Collins in August 2016 after 3 years of practice in Georgia. Dr.
Ganta and his family enjoy travel and the culinary arts.
Sara Burgardt, M.D.
Dr. Burgardt completed her nephrology fellowship in June 2016 at the University of North
Carolina Hospitals at Chapel Hill. She joined The Nephrology Clinic in August 2017. Dr.
Burgardt and her family enjoy playing in the beautiful Colorado outdoors. She especially loves
running, hiking and skiing.
Varsha Pathak, M.D.
Dr. Pathak joined the practice in 2017 after practicing in Pennsylvania for 3 years. She
completed her nephrology fellowship at Temple University in Philadelphia. Dr. Pathak enjoys
hiking, camping and travel.
Pam Holler, NP-C
Pam joined the practice in May 2005. She received her Bachelor of Science degree in Nursing
from Regis University and completed her master’s degree at the University of Northern
Colorado. Pam has years of experience working with patients with kidney disease. She and her
husband enjoy all kinds of outdoor activities.
Blake Hill, PA-C
Blake joined The Nephrology Clinic in 2013. He has practiced as a Certified Physician Assistant
since graduation in 2009. Blake enjoys fishing, the martial arts, and spending time with his
family pursuing a variety of adventures.
Stacy Williams, NP-C
Stacy joined the practice in June 2016 after completing her Nurse Practitioner training at the
University of Northern Colorado. She worked as a dialysis nurse prior to joining the medical
staff. Stacy and her family enjoy spending time together in the mountains and traveling.