Valerie Cohen


Thank you for your interest. Before you communicate with one of our attorneys, please note: Any comments our attorneys share with you are general information and not legal advice. No attorney-client relationship will exist between you or your business and O’Melveny or any of its attorneys unless conflicts have been cleared, our management has given its approval, and an engagement letter has been signed. Meanwhile, you agree: we have no duty to advise you or provide you with legal assistance; you will not divulge any confidences or send any confidential or sensitive information to our attorneys (we are not in a position to keep it confidential and might be required to convey it to our clients); and, you may not use this contact to attempt to disqualify O’Melveny from representing other clients adverse to you or your business. By clicking "accept" you acknowledge receipt and agree to all of the terms of this paragraph and our Disclaimer.


Valerie Cohen is an established and experienced lawyer specializing in regulatory and internal investigations, white collar defense, False Claims Act litigation, securities litigation, and labor and employment matters.

Valerie’s work is extensive and distinct, focusing on major health care insurers and financial institutions in complex, high-stakes regulatory, enforcement, civil litigation, and business matters. Valerie has particular expertise in risk adjustment for Medicare Advantage and Commercial plans.



  • Russian


Bar Admissions

  • New York
  • Connecticut

Court Admissions

  • U.S. Court of Appeals for the Second Circuit
  • U.S. District Court, Eastern and Southern Districts of New York


  • Fordham University, J.D.: cum laude; Dean's List; Notes and Articles Editor, Fordham Law Review (2007-08)
  • Cornell University, B.S., Industrial and Labor Relations: Dean's List; National Dean's List

Professional Activities


  • Honorable Peter K. Leisure, U.S. District Court, Southern District of New York


  • Honorable John G. Koeltl, US District Court, Southern District of New York


  • New York State Bar Association, Federal Bar Council, American Bar Association


  • Continuing Legal Education Program (NY), Nuts and Bolts of Filing a Summary Judgment Motion (November 2014)
  • Continuing Legal Education Program (NY), Shareholder Demands and Derivative Suits Under Delaware Law (August 2012)


  • “Delaware Supreme Court Upholds Rare Ruling that Material Adverse Event Allowed Purchaser to Negate Merger,” O’Melveny & Myers LLP Client Alert (December 2018)
  • “Shareholder Derivative Actions: From Cradle to Grave,” O’Melveny & Myers LLP Publication (November 2017) (co-authored with Seth Aronson)
  • “Changing Tides: Legalizing Surrogacy in New York,” Pamela Miller and Valerie Cohen, New York Law Journal (March 18, 2016)
  • “Second Circuit Permits Arbitration Claims to Proceed Despite $100 Million Class-Action Settlement,” O’Melveny & Myers LLP Client Alert (November 2011) (co-authored with Robert Stern and Allen Burton)


  • “Keeping Students Alive: Mandating On-Campus Counseling Saves Suicidal College Students’ Lives and Limits Liability,” 75 Fordham Law Review 3081 (2007)
  • Defending a national Medicare Advantage organization in a regulatory investigation False Claims Act.
  • Defended a national Medicare Advantage organization in a federal False Claims Act litigation.
  • Conducted an internal investigation into whistleblower allegations related to a national Medicare Advantage organization’s compliance with Medicare Advantage regulations.
  • Represented a financial institution in connection with various investigations and litigation related to high frequency trading.
  • Represented Chinese fertilizer company in shareholder derivative litigation.
  • Represented financial institutions as underwriters in shareholder securities class actions and derivative actions in federal and state courts.
  • Represented audit committee of multinational consumer goods company in shareholder demand investigation. 
  • Represented large shoe company in shareholder demand matter.
  • Represented large technology company in shareholder demand matter.
  • Represented large food and beverage company in federal ERISA litigation.