Marcus, Rosenberg & Diamond LLP Employee Directory

Q: What is Marcus, Rosenberg & Diamond LLP known for?

Marcus, Rosenberg & Diamond LLP was founded in 1989. Marcus, Rosenberg & Diamond LLP operates in the Law Practice industry.

Law PracticeNew York, United States2-10 Employees

Marcus Rosenberg & Diamond LLP’s practice encompasses a broad range of transactional real estate, cooperative and condominium law, construction and development, joint ventures, as well as litigation related to all of these areas.

Our firm was formed in 1989 as a spin-off from a much larger firm. Our partners, David Rosenberg and Jeffrey Diamond, have practiced law together for more than 25 years. We have chosen to remain small and independent, enabling us to offer our clients personalized service and direct partner contact at all stages of the representation.

We seek to provide our clients with creative, practical and cost-efficient legal counsel. Our attorneys place a high priority on returning calls promptly and being responsive to clients’ needs. We have carved out a niche as a small firm alternative to the national and global law firms in the fields of our expertise.

Find Marcus, Rosenberg & Diamond LLP employees' phone numbers or email addresses

Marcus, Rosenberg & Diamond LLP Global Highlights

North America
7

United States Of America
7

Marcus, Rosenberg & Diamond LLP's Leadership

D. R.
Partner
Mobile Phone
Email
J. D.
Partner
Mobile Phone
Email
R. R.
Counsel
Mobile Phone
Email

Marcus, Rosenberg & Diamond LLP Employee Metrics

100%

50%

2026

2025

Community & Social Services
Legal
Accounting
Administrative
Analytics
Other

Contact profiles from Marcus, Rosenberg & Diamond LLP

Name

Title

Contact Info

Location

Last Update

D. R.
Partner
Mobile Phone
Email
United StatesNew York
Oct 23, 2025
J. D.
Partner
Mobile Phone
Email
United StatesNew York
Dec 04, 2025
R. R.
Counsel
Mobile Phone
Email
Oct 17, 2024

Frequently Asked Questions

What is Marcus, Rosenberg & Diamond LLP known for?

Marcus, Rosenberg & Diamond LLP was founded in 1989 operates in the Law Practice industry. The company's main headquarters is located in 488 Madison Avenue Suite 1701 New York, New York 10022 United States; you can contact the main corporate office by phone at

+1-212-755-****

. Explore Marcus, Rosenberg & Diamond LLP's company overview page for more information.

What is Marcus, Rosenberg & Diamond LLP's most common email format?

Marcus, Rosenberg & Diamond LLP employees' email format typically follows the pattern of . Trying to find reliable and up-to-date employee contact data? Find more Marcus, Rosenberg & Diamond LLP email formats with LeadIQ.

How many employees does Marcus, Rosenberg & Diamond LLP have currently?

Marcus, Rosenberg & Diamond LLP has approximately 9 employees as of February 2026. These team members are located across 1 continents, including North America.

Who are Marcus, Rosenberg & Diamond LLP's key employees and leadership?

As of February 2026, Marcus, Rosenberg & Diamond LLP's key employees include:

Partner: D. R.
Partner: J. D.
Counsel: R. R.

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