Mt. Sinai Health System, operator of one of New York’s biggest hospitals, wants patients to know about the ways in which its doctors excel—and fall short.

Mt. Sinai, which employs about 7,100 primary and specialty care physicians and operates 12 joint-venture ambulatory surgery centers and more than 140 ambulatory practices throughout the five boroughs of New York City as well as in Westchester, Long Island and Florida, is launching online reviews and ratings of its doctors.

Specifically, Mt. Sinai has developed a five-star rating, based on a patient’s responses to questions from a nationally validated, standardized survey developed by the Centers for Medicare and Medicaid Services

The ratings are posted to physicians’ profiles on the Mount Sinai “Find a Doctor” website.

Star ratings are calculated from patient surveys received following a medical office visit.  Patients rate physicians on a one-to-five scale based upon how well the physician explained things, how well the physician listened, and the likelihood of recommending the physician’s office.

The website only shows ratings for physicians with at least 30 completed surveys in the most recent 18 months, Mt. Sinai says. “Online reviews provide a vital source of information for patients that will help them make informed choices,” says Mt. Sinai executive vice president and chief medical officer Jeremy Boal.  “Transparency helps build trust and it is an important way to engage and strengthen relationships with our patients.”

Doctor reviews posted online are becoming more widespread, and patients routinely research ratings when making healthcare choices.  Websites such as ZocDoc.com, Yelp.com, Vitals.com and Healthgrades.com already allow anyone to post ratings and reviews of physicians, without verification.

But hospitals and Health Systems such as Mt. Sinai maintain their own reviews include more details and more accurate anecdotes because hospitals have easy access to evaluations.

“Our patients and prospective patients are smart consumers of healthcare services,” says Mt. Sinai senior vice president and chief patient experience officer Sandra Myerson.  “Consumers want to be informed when deciding how to spend their healthcare dollars and we want to provide them with the information they seek. This is an opportunity to build loyalty with our patients and those considering our services.”

Mt. Sinai joins the list of big health systems rolling out online doctor reviews. Other systems include The Cleveland Clinic, Stanford Health, Duke University Medical Center, and the University of Utah Medical Center.