Walter Mleczko
September 22, 2023
NAME: Walter M. Mleczko ll
Title: President, Chief Executive Officer
NAME: Walter M. Mleczko ll
Title: President, Chief Executive Officer
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350 RXR Plaza
Uniondale, NY 11556
Alternate Address:
51 John F Kennedy Pkwy Fl West
Short Hills, NJ 07078-2704
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1 (908) 673-0100
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Marquis Who’s Who was established in 1898 and promptly began publishing biographical data in 1899. More than 125 years ago, our founder, Albert Nelson Marquis, established a standard of excellence with the first publication of Who’s Who in America.