Chad D. Willis

Deborah E. Mann is the head of the health law practice group at Sutin, Thayer & Browne APC and also serves as practice group lead for the firm’s commercial group. Based in Albuquerque, New Mexico, her practice focuses on Health Care Law and Medical Malpractice Law – Defendants. She counsels health care organizations and professionals on regulatory compliance, institutional and professional malpractice matters, and risk management issues. Ms. Mann advises clients on HIPAA compl...

Maria has practiced in the areas of Natural Resources, Environmental and Utility law for over twenty years. Her primary focus is on water resources, water quality, and related regulatory matters including National Environmental Policy Act (“NEPA”) and Endangered Species Act (“ESA”) compliance. She represents clients from both the public and private sectors before the Office of the New Mexico State Engineer, the New Mexico Public Regulation Commission federal agencies, ...

Elizabeth Ashton is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law. Elizabeth, who practices law in Albuquerque, New Mexico, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Elizabeth is held by other top lawyers in the same geographic and legal practice area.

Ron Holmes is a top attorney recognized by Best Lawyers in the practice area(s) of Bankruptcy and Creditor Debtor Rights / Insolvency and Reorganization Law. Ron, who practices law in Albuquerque, New Mexico, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Ron is held by other top lawyers in the same geographic and legal practice area.

Earl DeBrine concentrates his practice in oil and gas, railroad, product liability and commercial litigation. For over 30 years, he has represented major energy companies, railroads and manufacturers in lawsuits and negotiations ranging from preferential purchase rights and other disputes under joint operating agreements, environmental and title disputes to oilfield wrongful death claims. He also regularly advises oil and gas producers concerning development transactions and appears before th...

Betsy focuses her practice on appeals and complex briefing. She has handled appeals and dispositive briefing in state and federal courts in a wide range of areas, including torts, contracts, employment, medical malpractice, and workers’ compensation. She enjoys analyzing complex issues on nearly any topic and translating them into simple, persuasive language. Betsy also serves as local counsel on appellate matters and frequently advises clients on appellate trends in New Mexico. She has...

Maria Montoya Chavez is an attorney with Sutin, Thayer & Browne APC in Albuquerque, New Mexico. She has been recognized by Best Lawyers since 2018 for her work in Collaborative Law: Family Law, Family Law, Family Law Arbitration, and Family Law Mediation. This recognition is based on peer review by attorneys practicing in the same geographic and practice areas. Maria Montoya Chavez has practiced law since 2000 and focuses exclusively on family law matters, including divorce, child custody...

Sonya Burke is a shareholder in the firm’s Litigation group, where she practices primarily in insurance coverage defense. She represents insurance companies and their insureds in a variety of contexts. Sonya represents professionals in professional liability matters, and has represented realtors, attorneys, and contractors. She also assists with construction and design cases, employment matters including EEOC investigations, and breach of contract litigation. Sonya has been recognized a...

Susan Miller’s primary areas of interest are in water resources and environmental law, as well as insurance, tort and personal injury litigation. Susan currently serves as Chair of the Natural Resources, Energy and Environment Department and is the past Chair of Modrall Sperling’s Water Law Practice Group. She brings over 20 years of experience providing representation, advice and counsel to businesses, industries, ranchers, farmers and individuals throughout New Mexico with respe...

Doug Vadnais has more than 30 years of transaction and litigation experience in diverse business matters, real estate, and the protection and exercise of creditors’ rights. He has represented the entire spectrum of clients from individuals to Fortune 500 companies, and brings to each a pragmatic, practical approach to problem solving, with the aim of effecting an efficient and advantageous resolution for the client. Clients include both buyers and sellers of commercial and residential r...