Defamation? Former employer falsified medical information in letter to board of directors.

I am wondering if I am a candidate for a defamation law suit.

A former employer had me terminated me based on false information from a doctor who I had never seen. This has derailed my career and caused irreparable damage to my professional reputation which I have built over the past 15 years.

Background:
I was accepted to a very exclusive paid training plan (http://www.trainingplan.org) Co-sponsored by the Alliance of Motion Picture & Television Producers and Directors Guild of America. 400 days at this �trainee� position would qualify me to join the guild and continue working in my chosen field of film production (in which I have worked since 1994). After completing over 320 hundred days of this 400 day paid program I had a disagreement with the administrator. In the interest of brevity I�ll elaborate on that if this is deemed a valid case.

I was suspended from the position and was reviewed by the board of directors. In that review the administrator, my boss, submitted a letter to the board suggesting that I was not suited for the position (which was false) due to �a basic inability to multitask� (also false). She went on to write that she had consulted a psychologist retained by the program and the Dr. said I had a �hard wiring� problem and could not learn to multitask. This Dr. had never seen or met me and could not possibly have made this type of diagnosis. The board took this false information as fact and terminated me effectively ending my ability top have a career in my chosen field.

I am now unable to join the DGA (guild) since they require completion of this program. Furthermore all subsequent employment opportunities have been jeopardized due to the aforementioned fabrications. The �ability to multitask� can be found on nearly every job description, and my termination based on this defamation has caused immense financial damage and countless sleepless nights for me.

Do I have a defamation claim? There are for more elements that strengthen my case which I can share at another time with an attorney interested in this case. Thank You.