Marc D. Krock, M.D.

Marc D. Krock, M.D.

Dr. Krock is certified by the American Board of Internal Medicine in Cardiology and Interventional Cardiology and has been practicing cardiology in North Texas since 2005, starting in Plano. He was the Director of Peripheral Vascular Disease as well as the Chief of Cardiology at The Medical Center of Plano for several years, and was voted Cardiologist of the Year by the hospital staff in 2012.

Following his years of practice as a member of a large cardiology group in Plano, Dr. Krock began 2015 with a goal of establishing his own practice where the emphasis would be on building strong patient relationships based on mutual respect and trust. That goal became a reality in the Spring of 2015 with the opening of The Heart Smart Group office in The Medical Center of McKinney.

Dr. Krock, who is fluent in Spanish, is also interested in bikram yoga, scuba diving, and can be heard periodically on “Rock with Doc Krock,” on 92.5 Lone Star Radio. 

Crystal Bujold, DO, FACC

Effective April 26, 2024, Dr. Bujold will no longer be with The Heart Smart Group. All medical records will remain with the practice. Please contact us with any questions

Kalpesh Patel, MD

Our practice continues to grow with the addition of an extremely well-qualified and experienced cardiologist, Dr. Kalpesh Patel. ​​After receiving his medical degree from the University of Toledo College of Medicine in 2007 where he graduated in the top 15% of his class, Dr. Patel embarked on extensive medical training at Virginia Commonwealth University in Richmond, VA beginning July, 2008.

​For the next seven years at Virginia Commonwealth University, Dr. Patel completed his residency in Internal Medicine, followed by a three year Cardiology Fellowship, culminating in a one-year Interventional Cardiology Fellowship that was completed in 2015.

Dr. Patel has board certifications in Internal Medicine, Cardiology, Interventional Cardiology and Nuclear Cardiology. He has written or contributed to numerous medical publications and abstracts.