We care for many patients in Columbia, Ellicott City, and the surrounding Howard County area, as well as throughout the central Maryland area. The practice was started by Jerome Hantman in 1975. In 2010, CSCM joined Johns Hopkins and subsequently became the first practice in Johns Hopkins Regional Physicians in 2017.Our Providers‧Our Location‧Administrative Staff‧Frequently Asked Questions‧Cardiovascular Specialists‧Cardiovascular Specialists of Central.