look to your state medical board for guidelines on what is legally considered 'board certification'. everything else is irrelevant
http://www.mbc.ca.gov/consumer/complaint_info_questions_specialties.html
How do I know if my physician is board certified or if he or she is certified by an approved specialty board?
You may contact the American Board of Medical Specialties (ABMS) at 866-275-2267. In addition, the Medical Board has approved the following specialty boards: American Board of Facial and Plastic Reconstructive Surgery; American Board of Pain Medicine; American Board of Sleep Medicine; and the American Board of Spine Surgery. Links to the above-named boards are available through our Web site at:
http://www.mbc.ca.gov/Specialty.html.
The Medical Board of California established the Expert Reviewer Program in July 1994 as an impartial and professional means by which to support the investigation and enforcement functions of the Board. Specifically, medical experts assist the Board by providing expert reviews and opinions on Board cases and conducting professional competency exams, physical exams and psychiatric exams.
Requirements for participating in the Board's program are:
Possess a current California medical license in good standing; no prior discipline; no Accusation pending; no complaint history within the last three years;
Board certification in one of the 24 ABMS specialties (the American Board of Facial Plastic & Reconstructive Surgery, the American Board of Pain Medicine, the American Board of Sleep Medicine and the American Board of Spine Surgery are also recognized) with a minimum of three years of practice in the specialty area after obtaining Board certification;
Have an active practice (defined as at least 80 hours a month in direct patient care, clinical activity, or teaching, at least 40 hours of which is in direct patient care).