Long Island's Rivkin Radler has agreed to acquire Iseman, Cunningham, Riester & Hyde, a 16-lawyer shop with two New York offices in Albany and Poughkeepsie.

The tie-up, to be announced Wednesday afternoon, comes amid signs of increased consolidation for small and mid-sized firms in the New York market. Rivkin Radler, which will keep its current name after absorbing Iseman Cunningham, will grow to about 180 lawyers as a result of the combination.

Once its merger with Iseman Cunningham is completed on July 1, Rivkin Radler will have two offices in upstate New York to pair with its current locations in Hackensack, New Jersey; Manhattan; and Uniondale, New York. The two firms expect to have one of the largest health care practices in the northeast region, with upwards of 20 lawyers working exclusively in that practice area.