Official NY OCA attorney registration data · Updated 2026 Methodology Discipline records
Law firm

Dontzin Kolbe & Fleissig LLP

6 attorneys in the New York State Bar registry list this organization as their firm or employer.

About Dontzin Kolbe & Fleissig LLP

Dontzin Kolbe & Fleissig LLP (DKF) is a trial litigation boutique based in New York, founded by Matthew S. Dontzin, who reports more than 30 years of practice. The firm's terms of use describe it as a New York limited liability partnership engaged in the practice of law. Its website says it represents banks, hedge funds, asset managers, high-net-worth individuals, artists, galleries, companies, and attorneys and law firms in their own disputes, on both plaintiff and defendant sides, in the United States and Europe.

The website lists practices including complex commercial litigation and trial practice, international litigation and cross-border disputes, banking and financial services, employment law, regulatory investigations and white collar matters, art law, executive compensation, and public interest litigation. The firm states that it maintains a public interest practice. The sources reviewed show a single New York office at 31 East 62nd Street, 7th Floor, New York, NY 10065, which matches its principal address in New York State filings.

TypeLaw firm
New York officesNew York
Phone212-717-2900
Websitedkfllp.com
Registered NY attorneys6

Practice areas

Areas of work that Dontzin Kolbe & Fleissig LLP describes on its own website. They describe the organization as a whole, not the practice of any individual attorney listed below.

Commercial Litigation Banking & Finance Employment & Labor White Collar & Investigations

Organization profile based on its official website and public sources (reviewed October 30, 2026). Attorney list from the New York State Unified Court System registration data. Not affiliated with Dontzin Kolbe & Fleissig LLP.

Registered attorneys

Matthew Dontzin Admitted 1984 · New York, NY Currently registered Ruben Perlmutter Admitted 1985 · New York, NY Currently registered David Fleissig Admitted 1992 · New York, NY Currently registered Jason Kolbe Admitted 2006 · New York, NY Currently registered Heidi Schumann Admitted 2017 · New York, NY Currently registered Tarek Roshdy Hassan Admitted 2022 · New York, NY Currently registered

Registration status can change at any time. Confirm any attorney's current status through the official New York Attorney Search.

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