Marshall W. Waller is certified as a Family Law Specialist through the Board of Legal Specialization of the State Bar of California. A Certified Family Law Specialist must pass an extensive written examination in the subject area, be approved by a peer review process and show proficiency in this area by demonstrating experience handling a sufficient number of family law cases with varying degrees of complexity. Continuing education is required to maintain this specialty. Marshall Waller has also been awarded a top AV rating* from Martindale Hubble, the premier attorney rating system in the nation. Super Lawyers magazine has selected him as a Super Lawyer for numerous years.

Marshall Waller is admitted to practice before all the courts in the State of California, the United States Federal Court, the Court of Appeals, the United States Tax Court and Court of Claims. He is a director and shareholder of Feinberg & Waller, A Professional Corporation.

Marshall Waller has gained a reputation as a dynamic and entertaining speaker and has spoken nationally and locally to trade, civic, and private organizations. He has been a guest speaker for Continuing Education of the Bar (CEB) – Regents of the University of California on a variety of family law topics. He has been featured as a lawyer/spokesperson in a national television and print advertising campaign for Gateway Computers. He has been a legal commentator for local television news stations. He has been featured on the Dr. Phil Show where Dr. Phil McGraw noted that Marshall Waller was the "best of the best."

Marshall Waller taught family law as a professor of law and has written a University-level textbook in the area of California Family Law, published by Wolters Kluwer, currently in its seventh edition. He has also written a book designed for use by professionals and lay persons alike titled Essentials of California Family Law. He has published a study guide for attorney applicants studying to become certified family law specialists. His practice is in all areas of family law, including a focus on complex custody and marital property issues and high conflict matters. He is experienced in Hague Convention cases, interstate and intrastate jurisdictional disputes, and also child abduction and relocation cases.

Marshall Waller graduated with Highest Honors from California Polytechnic State University at San Luis Obispo (Cal Poly) with a B.A. in Political Science. While at Cal Poly, he was selected for membership in the prestigious Phi Kappa Phi, the oldest and largest collegiate honor society dedicated to the recognition and promotion of academic excellence in all fields of higher education. Marshall Waller earned his Juris Doctorate from Loyola Law School of Los Angeles, California. While at Loyola Law School, he received academic recognition for his placement in the class standing and was also the recipient of the American Jurisprudence award for excellence in Corporations. After graduating from Loyola Law School, he continued his education at the University of San Diego where he received a diploma in the field of Taxation.

Marshall Waller is an appointed member of the Los Angeles County Bar Association Family Law Section Executive Committee. He has worked with the Legislative Committee of the San Fernando Valley Bar Association and is an active member of that Association as well as the Los Angeles County and Beverly Hills Bar Associations. In addition to his busy law practice and teaching schedule, Mr. Waller is actively involved in his community. He participates in numerous volunteer organizations including serving as the Mock Trial coach for Oaks Christian high school and as a legal merit badge counselor for the Boy Scouts of America. He has served on the Board of Directors of the Pacific Lodge Youth Services, a residential rehabilitation facility for juvenile offenders.