LAWYER PROFILE
Mark D Koestler

Mark D Koestler

USA 2026

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HSF Kramer
 HSF Kramer

Ranked in 1 practice area

Immigration

New York

21 years ranked

Immigration

USA - Nationwide

14 years ranked

About

Provided by HSF Kramer

USA

Practice Areas

- Immigration and mobility

Career

Mark is a partner based in our New York office. Mark is Head of Business Immigration, US, counsels and represents advertising agencies, banks and financial services institutions, hedge funds, fashion and luxury goods companies, theatrical production companies, and other entities in the hiring, transfer and retention of foreign national executives, developing optimal solutions for clients' executive, management, professional and workforce needs. Mark works with clients to develop their global workforce planning and mobility strategies, advising them on navigating complex immigration laws and policies, and provides immigration counsel in the context of mergers, acquisitions and spinoffs, to structure these transactions to ensure compliance with U.S. immigration law.

For additional information on Mark’s professional background, please visit: https://www.hsfkramer.com/our-people/m/mark-d-koestler

Chambers Review

Provided by Chambers

Chambers Guide to the USA

Immigration - New York

Band 1
Individual Editorial
Mark Koestler often undertakes immigration work on behalf of clients in the publishing, advertising and entertainment industries. He receives high praise for his focus on client care.
Learn more about this teamView ranking table

Immigration - USA - Nationwide

Band 2
Individual Editorial
Mark Koestler possesses significant experience assisting CEOs and high-profile individuals with visa applications, including O-1 and L-1 petitions.
Learn more about this teamView ranking table

Strengths

Provided by Chambers

  • Mark Koestler is smart and one of the most polite and professional individuals ever. He is insightful and tremendously invested in our organization’s business. Mark is an all-round expert.

    ImmigrationChambers Guide to the USA

  • Mark is amazing. He is professional, friendly, knowledgeable, flags issues promptly and is really proactive.

    ImmigrationChambers Guide to the USA

  • Mark’s level of service is unmatched. He is responsive, kind and consistently goes above and beyond for both our company and our employees. He brings a level of sophistication and judgment that only comes from deep experience, finding thoughtful and practical solutions no matter how complex the issue. His ability to align legal strategy with the realities of our industry makes him an invaluable partner.

    ImmigrationChambers Guide to the USA

  • Mark Koestler is very professional and always willing to help. He always picks up the phone and jumps in when needed to help support the team. He is an asset to our firm.

    ImmigrationChambers Guide to the USA

  • Mark Koestler is genuinely the best immigration lawyer in the business. He is incredibly sophisticated, ridiculously responsive and makes no mistakes. I will continue working with him until one of us retires.

    ImmigrationChambers Guide to the USA

  • Mark Koestler is an excellent attorney – kind, thoughtful and considerate. He works on creative solutions and gives straightforward advice.

    ImmigrationChambers Guide to the USA

Ranked Individuals at HSF Kramer (62)

District of Columbia

New York

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