People: Robert Allen joins as senior manager at CBIZ Valuation Group LLC in the Dallas office … Russ and Russell Barone, formerly of Barone, Siciliano & Co., have joined the Rochester, N.Y., firm Mengel Metzger Barr & Co. … Patricia Cummings and Michael DeVito will be co-managing partners in charge of all operations at Citrin Cooperman’s New York City headquarters and will report to Joel Cooperman, who is transitioning from managing partner to CEO of the firm … Grant Thornton LLP names CEO Stephen Chipman senior vice chair, and he will lead the firm’s international and public policy operations effective January 1.

Firms: ACERTIS S.à r.l. of Windhof, Luxembourg, joins BKR International member firms … Elliott Davis and Decosimo, two of the leading accounting firms headquartered in the Southeast, will merge effective January 1 and will rebrand as Elliott Davis Decosimo to become the region’s fifth largest accounting firm with $108 million total annual revenues and more than 800 professionals and specialists in 17 offices across seven states … Schenck SC of Wisconsin has been accepted as the exclusive Appleton, Wis., member of the National CPA Health Care Advisors Association … The Harrison, N.Y.-based firm O’Connor Davies LLP will merge with Perl & Asch CPAs PC of Purchase, N.Y., effective on January 1 … The Cleveland-based firm Libman, Goldstine, Kopperman & Wolf merges with Bober, Markey, Fedorovich effective November 1.