You know, I actually have no idea. I remember the ad, but not what he was in before that. I always thought he was on a soap or something. IMDB is not very helpful because there are so many Peter Bergmans listed, but I'm guessing it's this one from the image:
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So what role was he playing a Dr. as? I am a young'uns.
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http://www.imdb.com/name/nm6117010/?ref_=fn_al_nm_2
Possibly Cliff Warner on All My Children? I didn't watch AMC much back then. I was totally a General Hospital girl.
Maybe someone here can shed some light on this mystery man.