The 1,520-square-foot property was built in 1930.
Dr. Ratsenberg is an internist practicing at Victory Memorial Hospital.
He graduated from Permskij Medicine Institute in Perm, Russia.
Townhome/condo sales in Sheepshead Bay/Gerritsen Beach/Manhattan Beach dropped 44 percent thus far in 2008. Median sale price also dropped, from $395,000 in 2007 to $202,000 thus far in 2008.
Address: 172 Mackenzie Street
Buyer(s): Dimitriy Ratsenberg and Galina Ratsenberg
Seller(s): Steven E Stern and (Formerly Known As) Marcia B Stern Mishkin
Sale date: Jan. 26, 2006