MARTIN B. GREENBAUM  attended UCLA for both his undergraduate and law degrees. He acquired intensive trial experience while serving as Deputy District Attorney with the Los Angeles District Attorney's Office for almost five years. Since then, he has been engaged in collection, enforcement of judgments, debt recovery, and construction cases. Mr. Greenbaum is the senior attorney with the law firm of Greenbaum Law Group, LLP and limits his practice to collection and loss recovery. Mr. Greenbaum is rated "AV" by Martindale-Hubbell Law Directory, the highest rating given by the most prestigious attorney rating directory in the United States .  Mr. Greenbaum has served as an instructor and presenter for seventeen California Continuing Education of the Bar (CEB) programs on Enforcement of Judgments and Post-Trial Practice. He has served as an instructor for multiple Lorman and NBI seminars, Bar Association seminars, and specialty group presentations. He has served as a University of California Extension Instructor for legal assistance courses concerning Obtaining and Enforcing Money Judgments at Irvine , Los Angeles, Riverside , San Diego and Santa Barbara campuses. He has been a chairman of the Orange County Bar Association Creditors' Rights Section. Mr. Greenbaum is the current Chairman of the Advisory Board of the National Association of Collection Attorneys. He has lectured widely to trade and business groups on the topics of credit, collection, and construction collection. He provides expert witness services on collection and collectability issues. He is admitted to practice law in California, Colorado and New York .