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Diana Yastrovskaya

Of Counsel
Diana Yastrovskaya is a distinguished legal professional specializing in healthcare-related proceedings, for which she has been recognized as a "Rising Star." Fluent in Russian, she defends companies and individuals nationwide against government entities, with expertise in regulatory matters. Diana earned her Juris Doctor, magna cum laude, from the Benjamin N. Cardozo School of Law.

Diana Yastrovskaya

About

Diana Yastrovskaya represents a wide array of clients in regulatory matters and litigation, with a specialization in defending companies and individuals in healthcare-related criminal, civil and administrative proceedings. These complex matters include cases brought in jurisdictions across the country by the Department of Justice, State Attorneys General, the Department of Health and Human Services-OIG, Drug Enforcement Administration, Medicaid Fraud Control Units, and Licensing Boards. Diana is fluent in Russian and has been acclaimed as a “Rising Star” by industry publications.

Prior to joining the Health Law Alliance, Diana worked for a New York healthcare law firm, where she advised entities throughout the healthcare delivery supply chain, including health systems, IDNs, laboratories, MSOs, pharmacies, physicians, sales and marketing representatives, and other individuals and private equity investors associated with these clients. Diana formerly worked in products liability, with particular focus on the regulatory aspects of the healthcare industry, including pharmaceuticals and medical devices.

Diana earned her Juris Doctor from the Benjamin N. Cardozo School of Law, magna cum laude, where she was an editor for the Cardozo Law Review. Diana graduated from Pace University, cum laude, with a B.S. in Biology and Chemistry minor. Her personal interests include tennis, kickboxing, and spending time with her rescue dog, Sawyer Ford.

Admissions: New York

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PBM

Health Law Alliance Successfully Defends a New York Pharmacy in an Optum Audit

February 24, 2026

Facing an Optum PBM audit that threatened network participation, a New York pharmacy turned to Health Law Alliance for strategic legal guidance, resulting in a successful audit resolution and uninterrupted network status.

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PBM

Health Law Alliance Successfully Reverses OptumRx’s Network Termination for a Michigan Pharmacy

February 24, 2026

We are proud to announce that the Health Law Alliance has successfully reversed a network termination from OptumRx for a Michigan-based independent pharmacy.

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PBM

Victory for an Independent Pharmacy: Health Law Alliance Successfully Reverses Over $30,000 in PBM Inventory Discrepancy Findings

February 24, 2026

Health Law Alliance successfully overturned more than $30,000 in alleged inventory discrepancy findings asserted by Express Scripts’ Special Investigations Unit (SIU) against a Texas pharmacy.

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PBM

Heath Law Alliance Secures Reversal of a Medicaid Payment Suspension

February 24, 2026

Health Law Alliance successfully secured a full reversal of a Medi-Cal payment suspension for a California pharmacy, overturning speculative allegations made by the Department of Health Care Services. This case highlights the firm’s ability to protect healthcare providers against unjust enforcement actions and the critical value of experienced legal counsel in Medicaid and insurance disputes.

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Healthcare Fraud

HLA Attorney Anthony Mahajan Secures Major Victory Over Cardinal as Federal Court Dismisses Lawsuit Against Independent Pharmacies

February 24, 2026

Health Law Alliance secured a major win for independent pharmacies with the dismissal of Cardinal Health’s lawsuit, exposing it as a baseless attempt to intimidate smaller providers. This outcome reinforces the firm’s commitment to protecting healthcare businesses from corporate overreach.

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