Matthew Oster

Harsh works with managed care organizations, hospital systems, and other providers on a wide range of regulatory, reimbursement, and transactional matters. His practice encompasses federal and California fraud and abuse compliance, licenses and permits, Medicare and Medicaid (Medi-Cal) participation and reimbursement, False Claims Act internal and government investigations, and enforcement actions. Harsh also advises clients on health information technology, bioethics, privacy, security compl...

Mike brings a unique background to Karns & Karns. He spent more than a decade advising successful rapid-growth companies in both Silicon Valley and Los Angeles in matters including human resources law, licensing law, copyright and trademark law, workers compensation, real estate law, and international business and tax law.

James M. Rishwain, Jr. is a top attorney recognized by Best Lawyers in the practice area(s) of Land Use and Zoning Law and Real Estate Law. James M., who practices law in Los Angeles, California, has been recognized since 2005. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which James M. is held by other top lawyers in the same geographic and legal practice area.

Kira S. Masteller represents clients in all matters of trust and estate planning, including federal estate and gift tax exemptions, control of assets while reducing estate taxes for the clients and their heirs, business and succession planning, the creation of special trusts, and post death trust administration.

Lyne Richardson is the managing partner of the Los Angeles office. She focuses her practice on employment law, litigation and client counseling. Lyne also oversees the employment litigation of the Los Angeles office and has litigated all forms of employment law cases in both state and federal courts in California and the California Department of Fair Employment and Housing, the DLSE and the EEOC. She is a frequent lecturer on labor and employment issues and has published a variety of articles...

For more information, please visit www.gibsondunn.com/lawyer/boutrous-jr-theodore-j/ .

Albert Alikin is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law. Albert, who practices law in Los Angeles, California, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Albert is held by other top lawyers in the same geographic and legal practice area.

A unique focus on corporate and healthcare law sets Christopher M. Olson apart and drives his efficient and client-oriented approach to executing transactions. With those transactional skills and his knowledge of corporate governance and regulations, Chris helps clients across the healthcare industry navigate regulatory compliance and transactional matters. From nonprofit and for-profit health systems and hospitals, to laboratories, pharmacies, physician practice management platforms and phys...

Corey is a litigator in bankruptcy, business and commercial litigation and represents bankruptcy trustees, receivers, creditors, assignees for the benefit of creditors, and municipalities in bankruptcy proceedings, and in federal and state court litigation. He frequently litigates fraudulent transfer (voidable transfer) actions, including in Ponzi scheme cases, and litigates breach of fiduciary duty and malpractice claims. Corey received his law degree from the University of Southern Californ...

Brian Glennon is a trial lawyer with an esteemed career spanning over two decades. His successful representations of public companies, accounting firms, and professional services firms and their officers and directors cement Brian as a leading lawyer for securities litigation and accounting defense. Read full biography here .