It's becoming an unfortunate by-product of President Barack Obama's health care reform: limited choice of doctor networks and hospital access. Why? Because the Affordable Care Act's subsidized health marketplaces are forcing insurers to drive down costs elsewhere.

Dr. Bill Grace, founder of Grace Oncology and an attending physician at Lenox Hill Hospital in New York, told CNBC Wednesday that Obamacare's access problems will ultimately force patients to receive lower-quality care.