People

Deska Widianto Senior Associate

Singapore

Leveraging more than 10 years of experience advising sponsors, investors, project companies, developers and financiers (including ECAs and commercial banks), Deska excels in getting complex projects across the renewable energy, conventional energy and infrastructure sectors over the line. She is experienced in advising on international cross border financings in Asia and the Middle East.

As a native Indonesian who spent over a decade of practicing law in Indonesia, Deska is adept at navigating Indonesia's intricate regulatory framework and possesses expertise in closing complicated projects for various stakeholders.

Prior to joining Orrick, Deska practiced law at a magic circle law firm in Jakarta and in Tokyo. Deska has also interned at the Massachusetts Department of Energy Resources and worked as an associate at a boutique oil and gas law firm in Indonesia.

Kelly Choo Managing Associate

Singapore

Kelly’s practice focuses on project development, mergers and acquisitions and general corporate matters with a particular focus on renewable energy infrastructure projects.

Prior to joining Orrick, Kelly practised for 5 years in local law firms in Singapore where she advised multi-national corporations and private companies on private M&A transactions as well as corporate and commercial agreements. Thereafter, Kelly served as Legal Counsel of a renewable energy infrastructure asset development platform. During that time, she was seconded to the company’s Australian offices where she was actively involved in advising on the projects in that region.

Naoyuki Fukuda Senior Associate

Tokyo

He mainly works on the development and financing of renewable energy projects as well as general corporate matters. 

Prior to joining Orrick, he worked for an international law firm and a Japanese company where he engaged in M&A, structured finance and renewable energy transactions.

Neil Golden Senior Counsel

Washington, D.C.

In recent years, Neil has worked extensively on transactions involving the acquisition and divestiture of both companies and assets, as well as the development and financing of renewable energy projects involving wind, solar, biomass and fuel cells, and on alternative fuels projects in the ethanol industry. He served as lead counsel for the sale of a large distributed solar, fuel cell and residential solar portfolio, named “2019 M&A Deal of the Year” by Power Finance & Risk Magazine. He has also worked extensively on the development and financing of conventional power generation facilities.

His corporate and financing experience has included representation of clients in syndicated bank financings, financings by multilateral and bilateral agencies, Rule 144A debt offerings, sale-leaseback financings, construction loans, formation of joint ventures and partnerships, equity investments, and the purchase and sale of equity interests in projects.

Internationally, Neil has represented sponsors of power projects and electric distribution companies in a number of countries including Brazil, Argentina, Jamaica, Honduras, Bangladesh, Nepal, Colombia, Turkey, the Dominican Republic and the People’s Republic of China.

Amy M. Joseph Partner

Boston

Amy works with digital health companies, health systems and other public and private companies—from new entrants to seasoned organizations—to address regulatory compliance and transactional needs. She also advises investors and collaborates with clients to understand their business goals and tailor practical solutions to help them achieve those objectives. Amy is well-versed in the corporate governance, data privacy, and security and scope-of-practice considerations facing the healthcare industry as it incorporates artificial intelligence (AI) and machine-learning (ML) solutions into clinical workflows. Her practice includes structuring and scaling national telehealth practices across a range of clinical disciplines, including complex collaborative arrangements involving labs, medical device manufacturers, remote patient monitoring solutions and pharmacies.

Amy spends much of her time working with clients on vetting and developing strategic affiliations, joint venture transactions and other novel business arrangements, including developing value-based enterprises and otherwise identifying means to achieve further alignment among stakeholders. She advises on reimbursement issues with respect to federal healthcare programs, private payors and self-pay business models. She also helps develop compliance programs and advises on related protocols and best practices.

In particular, Amy advises on physician self-referral, anti-kickback and other fraud and abuse law matters as well as on patient privacy matters, including HIPAA, 42 CFR Part 2 and corresponding state-level compliance. Amy also assists with internal investigations and assessing and responding to the results, including developing corrective action recommendations and self-disclosures.

A sought-after speaker and prolific writer on some of the most complex and critical issues in healthcare law, Amy shares her insights in publications and presentations across the country. She co-authored chapters in numerous publications, including the telemedicine chapter of the American Bar Association’s Physician Law: Evolving Trends & Hot Topics and a chapter addressing telehealth in the MCLE Massachusetts Health and Hospital Law Manual.

Chambers USA notes that Amy has “deep expertise in matters that impact healthcare providers and healthcare transactions,” “is a terrific resource on a range of regulatory issues” and “an expert in the Stark Law.”

Amy graduated first in her class at UCLA Law and was elected to the Order of the Coif. Prior to law school, Amy served in the U.S. Air Force.

Jeremy D. Sherer Partner

Boston

Jeremy advises clients on the full range of regulatory health care issues facing digital health stakeholders. His depth and breadth of experience enables him to help established and early-stage companies navigate a complex and ever-changing business and regulatory landscape. As one client’s CEO explained, “Jeremy is one of the best thought partners, and hands down the best legal navigator, I’ve found in the digital health space.”

His telehealth experience includes advising on compliance with state licensure requirements for physicians and non-physician practitioners, corporate practice of medicine issues, remote prescribing (including controlled substances), patient consent and Medicare, Medicaid and commercial reimbursement. He advises clients on compliance with laws against fraud and abuse, including federal and state anti-kickback and self-referral laws, as well as privacy issues arising under HIPAA and its state-level counterparts.

Jeremy has substantial experience pertaining to structuring, operationalizing and scaling “PC-MSO” arrangements across all 50 states. He also advises venture capital and private equity firms conducting regulatory diligence associated with investments in digital health and health care technology ventures, from seed stage funding to nine-figure raises.

Carl Lyon Partner

New York

He has long-standing relationships with a great number of utility clients that span many years and complex transactions, advising them on numerous taxable, tax-exempt, and tax-advantaged financings of all types for electric, gas, water and waste water projects and in restructuring and work-outs. These projects include five different nuclear plants, with financing through both the public capital market and through the U.S. Department of Energy.

Carl was one of the leaders in the development of joint action agencies among municipal utilities. He worked on legislation in 20 states to authorize their formation and testified before legislatures and legislative committees in many of these states. He drafted the first modern indenture for cooperative utilities which served as the model that is currently used by almost every generation and transmission cooperative. He worked with TVA in their exit from the Federal Financing Bank program in the 1980’s and in their financings since then. Carl worked with the major generation and transmission cooperatives that have exited the RUS program in structuring and financing their exit.

Carl has also worked with virtually every major investment banking firm and most major domestic and international banks.

Jon Thursby Partner

Londra

In addition to drafting and negotiating FIDIC, BIMCO, LOGIC and other standard form agreements, Jon also advises on highly bespoke construction management and fully "wrapped" EPC agreements.

Jon advises sponsors, lenders and contractors on the construction and operation of wind, solar, biomass and other renewable energy projects in Asia, Europe, the UK and the U.S.

Jon's recent experience includes performing the role of Commercial Director for the Formosa II offshore wind project in Taiwan.

Before returning to the UK in 2024, Jon was based in Singapore for a number of years where he advised on some of the most complex and innovative offshore wind projects in South Korea, Taiwan and elsewhere in Asia, including the Changfang and Xidao project developed by CIP and its partners, which remains one of the largest offshore wind project financings in Asia. Although based in London, Jon continues to advise on projects in various stages of development, construction and operation in Asia and the U.S.

Jon began his career as a disputes lawyer and continues to advise on contentious matters.

Leah Recht Partner

San Francisco

Her experience includes structuring and negotiating various strategic and leveraged acquisitions of public and private targets, divestitures, carveouts, mergers and acquisitions, equity and debt financings, minority and growth investments, restructurings, employment and executive compensation, corporate governance and other general corporate counseling matters.

She advises clients across a wide range of industries, including tech, AI, software, fintech, mobility tech, women’s health, life sciences and healthtech, insurance, consumer and retail, consulting services, education, manufacturing and transportation.

Leah also serves on the Board of Directors for National Brain Tumor Society (NBTS), a leader in brain tumor patient advocacy, research, information, and support.

Cécile Mariotti Partner

Parigi

She has significant experience in both French and international tax matters and regularly advises on complex mergers and acquisitions, reorganizations, capital markets, and financing transactions.

Cécile works with French and international corporate groups across various sectors, both public and private, as well as financial institutions and investment funds. She also represents clients in their dealings with tax authorities, including ruling requests and tax litigation. Additionally, she assists in the structuring and implementation of employee stock offerings and management packages.

Cécile teaches a seminar on the tax aspects of LBOs as part of the Master in International Taxation program jointly offered by Paris II Panthéon-Assas University and HEC. She is a member of the International Fiscal Association (IFA) and the Institut des Avocats Conseils Fiscaux (IACF), where she served on the Corporate Tax Committee until October 2020. She is also a member of the Tax Committee of France Invest and has been appointed as a rapporteur for France at the IFA Congress in Lisbon in 2025.

In addition, Cécile serves on the board of the Alliance for the Financing of Femtech in France. She maintains an active pro bono practice in the tech sector and is strongly committed to initiatives and networks that support the long-term success of women leaders in business. Notably, she served as co-leader of the Women Enriching Business Committee in Paris at Latham & Watkins.

Before joining Orrick, Cécile spent four years in the tax team at Latham & Watkins, following seven years in the tax team at Cleary Gottlieb, working in both the Paris and New York offices.

Geoffroy Berthon Partner

Parigi

Geoffroy advises on public contracts, particularly in the context of concessions and PPPs. He has been involved in projects relating to the financing, construction and operation of the Stade Vélodrome in Marseille; the Sud Europe Atlantique high-speed line; the Athletes' Village for the Paris 2024 Olympic Games; the Grand Paris Express and the offshore extension of the Principality of Monaco. He has also worked on several French highway (A412, A69, RCEA, A88, A41, A150), port (Calais, Cannes) and airport projects (Nice, Lyon, Beauvais).

In the renewables field, he acts alongside the French government (Ministry of Energy Transition) in calls for tenders for the construction of offshore wind farms, including floating wind turbines, and advises operators in the realization of biomass and geothermal projects, as well as investors in the context of "M&A" operations concerning wind and solar assets and methanization. He also has experience in hydroelectricity matters. He advises both sponsors and lenders and works regularly with public entities and governments. He also advises on the drafting and negotiation of corporate PPAs, acting for both energy producers and buyers.

Geoffroy Berthon is recognized by clients as "talented, dynamic and brilliant lawyer. He is a hard worker. His calm manner and attentiveness reassure as a client" (Legal 500) and as a Leading Partner by Legal 500 (EMEA 2025) in public law and energy.

Geoffroy holds a doctorate in public law, was a lecturer in public contract law at Sciences Po, and frequently published in both English and French.

Maiten Le Brishoual Senior Associate

Parigi

Maïten advises clients on French and international development, mergers and acquisitions, restructurings and real estate investments. She also advises companies and high net worth individuals on the management and transfer of their assets, management incentives, tax audits and litigations.

She also has a strong experience on M&A Insurance/Contingent Tax Risk.

Prior to joining Orrick, Maïten worked in a leading French law firm.