
Terese A. Mosher Beluris has extensive experience litigating actions on behalf of health care service plans, management services organizations (MSOs), and providers involved in commercial and managed care disputes. She has also represented financial institutions, fiduciaries, companies and individuals in complex and high stakes litigation, including civil extortion, contested water rights, tortious interference, breach of fiduciary duty, fraudulent transfers, wrongful dishonor claims, contested conservatorship proceedings, will contests, actions for return of abducted children, and actions for breaches of trust and testamentary promise in civil, family law, and probate courts.
In the managed care arena, Ms. Mosher Beluris has litigated putative class actions and other actions on behalf of health plans, health care providers and intermediaries. She has been lead trial counsel in significant matters concerning the imposition of liability upon health care service plans following the default of MSOs and other intermediaries, the defense of pharmaceutical utilization review under the precepts of California Business and Professions Code Section 2056, and alleged violations of due process or fair procedure. She also has substantive experience in risk pool disputes and other conflicts involving remuneration issues between health care providers and health plans.
Ms. Mosher Beluris has successfully defended various entities against governmental and/or private claims that they were engaged in the corporate practice of medicine or dentistry and has petitioned for judicial review of state decisions not to award health services-related contracts to petitioners.
In connection with water rights disputes, Ms. Mosher Beluris has been lead trial counsel in a private company’s successful defense against a Water District’s assertion of a prior and superior right to appropriate from and store water in a watershed and the Water District’s request for a bar against the appropriation and exportation of water, as well as the ensuing agreement for the physical exportation of water from the private property and amelioration of any potential effects of any loss of recharge.
Ms. Mosher Beluris has been named one of The Best Lawyers in America in Administrative/Regulatory Law from 2008 to 2019 and Commercial Litigation from 2014 to 2019. She was named a Southern California Super Lawyer, Health Care, 2007 to 2019. She served as Judge Pro Tem in the Superior Court of California from 1989 to 2000.
Recognition
- The Best Lawyers in America Administrative/Regulatory Law (2008 to 2025) and Commercial Litigation (2014-2023) and Health Care Law (2023-2025)
- Southern California Super Lawyer Health Care (2007 to 2022)
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15
Aug
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Buchalter Attorneys Named 2025 Best Lawyers in America
Awards
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Buchalter, is pleased to announce that 99 lawyers have been included in the 2025 edition of The Best Lawyers in America®. Best Lawyers was founded […]
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17
Aug
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Buchalter Attorneys Named 2024 Best Lawyers in America
Awards
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Buchalter is pleased to announce over 80 of the Firm’s lawyers have been included in the 2024 edition of The Best Lawyers in America. Best […]
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18
Aug
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Buchalter Attorneys Named 2023 “Best Lawyers in America”
Awards
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The firm is pleased to announce over 60 Buchalter lawyers have been included in the 2023 edition of The Best Lawyers in America. Best Lawyers […]
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21
Jan
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Buchalter Attorneys Named 2022 Southern California Super Lawyers
Awards
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Buchalter is pleased to announce that fifteen attorneys in the Firm’s Los Angeles & Orange County offices were named 2022 Southern California Super Lawyers. These […]
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19
Aug
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Buchalter Attorneys Named 2022 “Best Lawyers in America”
Awards
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The firm is pleased to announce that several lawyers have been included in the 2022 edition of The Best Lawyers in America. Best Lawyers was […]
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29
Jan
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Buchalter Attorneys Named 2021 Southern California Super Lawyers
Awards
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Buchalter is pleased to announce that sixteen attorneys in the Firm’s Los Angeles & Orange County offices were named 2021 Southern California Super Lawyers. These […]
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20
Aug
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Buchalter Attorneys Named 2021 “Best Lawyers in America”
Awards
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The firm is pleased to announce that several lawyers have been included in the 2021 edition of The Best Lawyers in America. Best Lawyers was […]
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16
Jul
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Buchalter Attorneys Named 2020 Best Lawyers “Women in the Law”
Awards
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For the 2020 “Women in the Law” Business Edition, Best Lawyers features all female recognized attorneys in the U.S. across all practice areas. Buchalter congratulates […]
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15
Jan
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Buchalter Attorneys Named 2020 Southern California Super Lawyers
Awards
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Buchalter is pleased to announce that twenty attorneys in the Firm’s Los Angeles & Orange County offices were named 2020 Southern California Super Lawyers. These […]
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15
Aug
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Buchalter Attorneys Named 2020 “Best Lawyers in America”
Awards
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The firm is pleased to announce that 24 lawyers have been included in the 2020 Edition of The Best Lawyers in America. Best Lawyers was […]
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04
Feb
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Buchalter Attorneys Named 2019 Southern California Super Lawyers
Awards
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Several attorneys in the firm’s Los Angeles & Orange County offices were named 2019 Southern California Super Lawyers. These attorneys have attained a high degree […]
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15
Aug
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Buchalter Attorneys Named 2019 “Best Lawyers in America”
Awards
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Administrative/ Regulatory Law Terese A. Mosher Beluris Banking and Finance Law Anthony R. Callobre Robert J. Davidson Robert A. Zadek Bankruptcy and Creditor Debtor Rights […]
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05
Sep
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Buchalter Secures Defense Verdict for Cooperative of American Physicians, Inc. in Case of First Impression
Representative Matters
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In June 2016, plaintiffs, who are current and former members of Cooperative of American Physicians, Inc. (CAP) and current and former trustees of Mutual Protection […]
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15
Aug
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Buchalter Attorneys Named 2018 “Best Lawyers in America”
Awards
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August 15, 2017 Terese A. Mosher Beluris— Administrative / Regulatory Law, Commercial Litigation Bernard D. Bollinger, Jr.— Bankruptcy and Creditor Debtor Rights / Insolvency and […]
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18
Aug
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Buchalter Nemer Attorneys Named 2017 Best Lawyers in America
Awards
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Buchalter Nemer is proud to announce the following attorneys have been named 2017 Best Lawyers in America: Peter G. Bertrand– Bankruptcy and Creditor Debtor Rights/ […]
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18
Jul
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Buchalter Nemer Adds Three Counsel to Growing Los Angeles Office
Firm News
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Buchalter Nemer is pleased to announce it has added three counsel to its Los Angeles office. Terese A. Mosher Beluris joined as Of Counsel in […]
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Presentation
Terese A. Mosher Beluris and Carol K. Lucas, Presenters at the 21st Annual Healthcare Law Compliance Symposium
October 30th, 2024
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- Obtained judgment following an evidentiary hearing on behalf of intervenor association of physician groups opposing an association of health plans’ petition for writ of mandamus to declare unconstitutional Health and Safety Code section 1342.2’s mandate requiring health care plans to pay the costs for services provided by health care providers for COVID-19 diagnostic and screening testing before January 1, 2022.
- Obtained a favorable judgment following trial for the return of an abducted minor child to Germany.
- Obtained a favorable decision establishing a junior appropriative right for the appropriation and exportation of groundwater following a Phase 1 trial, and in preparing for a Phase 2 trial on a physical solution, obtained an agreement regarding exportation that obviated a Phase 2 trial.
- Obtained judgment following evidentiary hearing in opposition to petition for writ of mandamus on behalf of corporation comprised of licensed physicians arising out of the purported terminations of petitioners’ memberships in the company, and obtained decision affirming the judgment on petitioners’ appeal.
- Defended an individual in family law and civil courts regarding civil extortion and breach of fiduciary claims through evidentiary hearings and civil pretrial motions, resulting in an agreed-upon resolution.
- Obtained a favorable judgment following trial for the return of an abducted minor child to Scotland.
- Defended a California health plan in a putative class action against antitrust claims arising from an alleged conspiracy to redline certain geographic markets.
- Achieved a favorable jury verdict for a corporate assignee awarding recovery of the value of fraudulently transferred property.
- Resolved claims against a Texas physician practice management (PPM) company in a putative class action for rescission of a service agreement that allegedly implicated Florida’s anti-fee splitting strictures, and a renal dialysis provider against claims that it was required to refund payments in excess of the Medicare reimbursement rate to a Colorado health plan.
- Resolved individual and putative class action claims in California for data privacy breaches.
- Obtained judgment for an Arizona physician-hospital organization (PHO) against claims that it had wrongfully “deselected” a provider in an action in Arizona that sought to impose Potvin-type processes and obligations on the Arizona payor-physician relationship.
- Obtained judgment of dismissal for California entities in a putative class action charging the entities with operating illegally without a requisite Knox-Keene license and violating the prohibition against the corporate practice of medicine, and affirmation of the judgment on appeal.
- Defended will contest and putative shareholder attacks on majority shareholders’ corporate interests.
- Obtained judgment for executors and trustees against statutory claims of wrongful transfers and seeking to establish community property interests.
- Obtained judgment of dismissal for distributor against competitor’s claims for trademark infringement and unfair business practices.
Ms. Mosher Beluris earned her JD from Loyola Law School in 1982 and her BA, magna cum laude, from Tufts University in 1979.
- U.S. Court of Appeals for the Sixth Circuit
- U.S. Court of Appeals for the Ninth Circuit
- U.S. District Court for the Central District of California
- U.S. District Court for the Eastern District of California
- U.S. District Court for the Northern District of California
- U.S. District Court for the Southern District of California
- U.S. District Court for the District of Colorado
- Judge Pro Tem, Superior Court of California (1989 to 2000)
Additional Specialties
- Commercial Litigation
- Trusts & Estates Litigation