Dr. Bob Sears is the author of The Vaccine Book, an excellent reference text focused on vaccination that provides a balanced view of the subject. While Dr. Sears is pro-vaccination and offers his reasons for that stance, he does recommend and provide an alternate vaccination schedule that differs from the CDC's formal recommendation.
Apparently, though, some alternate options originally offered by Dr. Sears are no longer available, specifically splitting the MMR into three separate shots, spread out over a few years. Dr. Sears details this change and the options for parents in a new blog post.
Separate Measles, Mumps, and Rubella Vaccines No Longer Available? What Can Parents Do?