Is there a way to query WHOIS data to discover a list of all of the
domain names registered to a specific person or company?

Hi strawhat-ga!

Unfortunately, there is no way to accomplish your question at this
time. I base my answer on my own personal knowledge, but to ensure I
was correct and provide myself reliability, I telephoned Verisign
(http://www.verisign.com/), a leading domain registrar and posed your
question to their technical support staff, who confirmed my answer.

Hope this helps, and if you've got any other questions about domain
registrations, post a clarification and I'll be glad to address them
for you.

Verisign's customer service:

U.S. & Canada: 1-888-642-9675
Worldwide: +1 703-742-0914
http://www.verisign.com/

--mosquitohawk-ga

Thanks! Actually I think this is good news for privacy's sake. I
appreciate the backup from Verisign.

This question was answered in a few other seperate occasions as well
and you may find the additional information very useful:

Q: Know one domain, want to find others registered by the same people
https://answers.google.com/answers/main?cmd=threadview&id=100799

internet domain names, web site ownership 
https://answers.google.com/answers/main?cmd=threadview&id=13263

These two links show that it is possible to acertain a list of domains
owned by a particular entity under certain circumstances, though it
took a bit of research to unearth these treasures. They are not fully
inclusive and do not provide perfect information in all cases, but are
certainly much better than nothing.