Insight

CMS Puts California on Notice

Published February 19, 2026

SF

Written by Stanley L. Friedman

Published: June 8, 2026

What Dr. Oz’s Letter to Governor Newsom Means for Healthcare Providers

In a widely circulated letter to Governor Gavin Newsom, Centers for Medicare & Medicaid Services (CMS) Administrator Dr. Mehmet Oz signaled increased federal attention on California’s Medi-Cal program. Although addressed to state leadership, the message appears intended for a broader audience. The letter points to significant growth in certain Medicaid-funded services, particularly hospice care, and raises questions about billing increases, program oversight, and potential fraud risks.

For California healthcare providers, the letter should be viewed as an enforcement signal.

When federal officials publicly question whether a state Medicaid program is adequately protecting federal funds, the result often includes additional audits, expanded data analysis, coordination between agencies, and in some situations, criminal investigations.

Stanley L. Friedman, a former Assistant United States Attorney in the Major Frauds Section of the U.S. Attorney’s Office in Los Angeles, previously handled healthcare fraud prosecutions involving Medicare and Medicaid. That background provides insight into how government communications like this can precede investigative activity. Healthcare providers seeking guidance about potential exposure or government inquiries may wish to speak with counsel familiar with healthcare fraud and white‑collar criminal matters.

The Core Allegations in the Letter

Dr. Oz’s letter points to large increases in hospice enrollment and related billing in California. It also references growth rates that reportedly exceed national averages and raises concerns about medical necessity determinations, possible enrollment irregularities, and compliance weaknesses within Medi-Cal.

The letter also underscores that federal Medicaid funding is tied to compliance with federal standards. CMS has the authority to require corrective actions and refer matters for further enforcement review. By referencing billing anomalies and comparing the situation to enforcement activity in other states, the letter frames the issue within a broader compliance and oversight context.

Why Public Signaling Matters

Healthcare fraud investigations are typically not public until charges are filed. It is relatively uncommon for federal leadership to raise systemic concerns in a public communication before enforcement actions occur. When that happens, it can indicate that agencies have already conducted significant data analysis and may be reviewing providers whose billing patterns fall outside expected ranges.

Administrative audits can develop into more serious investigations. In some situations, those matters are later referred to federal prosecutors. When public messaging signals concern about a particular sector, providers operating in that space may see increased scrutiny.

The Role of Data Analytics in Modern Healthcare Investigations

Many healthcare fraud investigations now begin with statistical analysis rather than whistleblower complaints. CMS, the Department of Health and Human Services Office of Inspector General (HHS-OIG), and the Department of Justice use analytical tools to identify unusual billing activity, including:

  • Outlier billing patterns
  • Unusually high reimbursement concentrations
  • Rapid increases in patient enrollment
  • Geographic clusters of similar claims
  • Referral relationships that appear statistically irregular

A provider does not need to intentionally submit false claims to be flagged. A statistical outlier may prompt an audit, and documentation issues discovered during that process can expand the scope of a review.

How an Audit Can Develop Into a Criminal Investigation

While every matter is different, enforcement activity often follows a progression such as:

  1. Identification of unusual billing data
  2. Administrative audit or review
  3. Issuance of subpoenas
  4. Witness interviews
  5. Referral to federal prosecutors
  6. Grand jury investigation
  7. Possible indictment

Once a case reaches the indictment stage, prosecutors generally believe the available evidence meets the legal standard required for criminal charges. Legal guidance earlier in the process can help providers understand their position and respond appropriately to government inquiries.

Why Prior Government Experience Can Be Relevant in Defense Matters

Attorneys who have previously worked inside federal prosecutors’ offices may have familiarity with how healthcare fraud cases are evaluated and investigated. That perspective can be helpful when assessing documentation issues, responding to subpoenas, and communicating with investigators.

Understanding how cases are developed—including what billing patterns attract attention and how evidence is analyzed—can play a role in shaping a defense strategy when allegations arise.

Steps Healthcare Providers May Consider

In light of the concerns raised in the CMS letter, healthcare providers in California may consider reviewing their compliance practices, including:

  • Conducting internal compliance assessments
  • Reviewing hospice and other high-risk billing categories
  • Evaluating documentation supporting medical necessity
  • Examining referral arrangements and financial relationships
  • Seeking legal advice before responding to government inquiries

Addressing potential issues early can help providers understand their regulatory obligations and prepare for possible audits or requests for information.

Speaking With Counsel About Healthcare Fraud Investigations

The CMS communication to California officials signals increased attention to Medi-Cal oversight and billing practices. Providers operating hospices, clinics, home health agencies, durable medical equipment companies, and billing services may wish to remain attentive to compliance requirements as enforcement agencies review industry data.

Healthcare providers who have received subpoenas, audit notices, or other inquiries related to billing practices may consider consulting counsel experienced in healthcare fraud and white‑collar criminal defense matters.

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