How do I find an item I lost in a taxi if I have the medallion number?

You can use the medallion number to find your taxi's garage. You should call the garage to see if they have your item and arrange to pick it up. You should also call the Lost Property Police Precincts in each borough to see if your item was turned in there. The Police Lost and Found Centers are:

MANHATTAN
167 East 51st Street (between Lexington and 3rd Avenues)
(212) 826-3211, 3212 or 3213

86th Street Transverse, Central Park
(212) 570-4821

BRONX
900 Fteley Avenue (between Story Avenue and Banyer Place)
(718) 542-0888

BROOKLYN
191 Union Street (between Hicks and Henry Streets)
(718) 834-3211

100 Meserole Avenue (between Lorimer Street and Manhattan Avenue)
(718) 383-3879

86th Street Transverse, Central Park
(212) 570-4821

QUEENS
71-01 Parsons Boulevard (between 71st and 72nd Avenues)
(718) 969-5100

92-15 Northern Boulevard (between 92nd and 93rd Streets)
(718) 533-2002

STATEN ISLAND
78 Richmond Terrace (between Wall Street and Hamilton Avenue)
(718) 876-8500