Both men are the only two uncapped players in Rudi Voller's 23-man strong squad for their next three internationals.
Borussia Dortmund midfielder Lars Ricken also returns to the squad for the first time since July 1999.
Asamoah, (pictured) a midfielder, and Boehme, a defender, have been outstanding for Schalke this season in which they narrowly finished as runners-up to Bayern Munich.
Group Nine leaders Germany are due to play a friendly against Slovakia on May 29 in Bremen and World Cup qualifiers away to Finland and Albania on June 2 and 6 respectively.
Voller has, though, surprisingly included injured Bayern Munich midfielder Jens Jeremies, who has been ruled out of Wednesday's Champions League final against Valencia.
Full Squad:
Oliver Kahn (Bayern Munich), Jens Lehmann (Borussia Dortmund) Frank Baumann, Torsten Frings (both Werder Bremen), Joerg Boehme (Schalke), Thomas Linke (Bayern Munich), Jens Nowotny (Bayer Leverkusen), Marko Rehmer (Hertha Berlin), Christian Ziege (Liverpool) Gerald Asamoah (Schalke), Michael Ballack, Carsten Ramelow (both Bayer Leverkusen), Marco Bode (Werder Bremen), Sebastian Deisler (Hertha Berlin), Dietmar Hamann (Liverpool), Jens Jeremies, Mehmet Scholl (both Bayern Munich), Lars Ricken (Borussia Dortmund) Oliver Bierhoff (Milan), Carsten Jancker, Alexander Zickler (both Bayern Munich), Miroslav Klose (Kaiserslautern), Oliver Neuville (Bayer Leverkusen)
