The LinkedIn Medical Devices group has grown so big that it now is creating subgroups so that area professionals can meet in person.

(Note: You have to be a LinkedIn member to access the group’s information.)

How big? Well, it’s close to 100,000 members and the group officially became the largest medical group on LinkedIn last week, announced Joe Hage, the group’s creator, to members Wednesday.

Hage, who is traveling to San Diego, realized the limits of online professional networking when he wanted to connect with the group’s denizens in that city — San Diego members of the Medical Device LinkedIn group number more than 1,900.

Hence the rationale for subgroups based on location. Subgroups will be currently available forBoston, New York, Salt Lake City, San Diego, San Francisco and Seattle.