We handle commercial accounts receivable and judgments ranging from $10,000 to $2,000,000 in California & New York!

Martin B. Greenbaum, Esq.

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 Board 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.

We are a quality law firm, not a collection agency or a mill operation. We Sue! We don’t send whiny letters and don’t usually contact the debtors before we start the lawsuit unless required by law. We don’t make repetitive phone calls and have no phone collectors. We have a full staff of qualified and experienced Lawyers and Legal Assistants. We use all the legal remedies the law allows to collect your money. We move quickly and aggressively.

Practice Areas


Bad Debts and Loans

Unpaid Sales of Goods or Services 

Construction Debts



Sister State Judgments

Foreign Judgments

Arbitration Awards 


About The Collection Process

Most cases involving sales of goods or services have some form of written documentation. This can include emails, contracts, correspondence, invoices, billings, a statement of the account or admissions of the debt. These are the documents which we present for settlement or at court, together with the testimony of the witnesses, that win your case.

We offer a choice between contingent fees (a percentage) or hourly fees (charge by the hour). See our FAQs page on which is right for you and how to make the choice.  

We recover more money, more often than other attorneys or collectors. If you are a contingent fee client and we don’t recover, there is no fee. The out-of-pocket filing fees for the court enforcement documents, motions, hearings and liens and the fee for the process servers are generally small.  See our FAQs pages concerning Costs.

  California Locations
Newport Beach San Diego San Francisco
840 Newport Center Drive 11622 El Camino Real 649 Mission Street   
Suite 720 Suite 100 5th Floor
Newport Beach, CA 92660 San Diego, CA 92130 San Francisco, CA 94105
Phone: (949) 760-1400 Phone: (619) 231-1338 Phone: (510) 727-1275
Fax: (888) 760-7210 Fax: (888) 760-7210 Fax: (888) 760-7210
Email: Send Us An Email Email: Send Us An Email Email: Send Us An Email
Website: www.CollectionLaw.com  Website: www.CollectionLaw.com Website: www.CollectionLaw.com

   New York Location
New York City  

1271 Avenue of the Americas
43rd Floor
New York, NY 10020
Phone: (212) 732-6837
Fax: (888) 760-7210
Email: Send Us An Email
Website: www.CollectionLaw.com


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