Medicare Advantage and Mental Health: The Ghost Network Problem Therapists Need to Understand

In October 2025, the Department of Health and Human Services Office of the Inspector General published a data brief (OEI-02-23-00540) that documented something therapists who have tried to work with Medicare Advantage plans know instinctively: the networks MA plans advertise don't reflect reality.

The OIG analyzed behavioral health provider network directories for Medicare Advantage and Medicaid managed care plans across multiple states, cross-referencing listed providers against encounter data — actual claims records showing who was treating plan enrollees. The finding was stark: in Medicare Advantage plans, 55% of listed behavioral health providers were inactive, meaning they had provided no services whatsoever to plan enrollees during the study period (HHS OIG, October 2025).

In Medicaid managed care plans, the figure was 28% — still significant, but the Medicare Advantage number matters most for private practice therapists. More than half of the behavioral health capacity MA plans claim to offer is fictitious. A senior patient with MA coverage who calls a therapist from the plan's directory has roughly even odds of reaching someone who actually serves that plan.

These fictional listings have a name in healthcare policy: ghost providers. And the OIG report is the most systematic federal documentation yet of how widespread ghost networks have become in behavioral health specifically.

A ghost network is an insurance plan's provider directory that contains clinicians who are not actually available to treat the plan's enrollees. The term sounds conspiratorial, but the mechanics are mundane — and that's part of what makes the problem persistent.

Ghost providers typically fall into three categories:

• Providers who left the network without formal notification to the plan, or whose termination wasn't processed before directory updates went out. A therapist who closed her practice or moved out of state may remain listed for months.
• Providers who joined for credentialing access but never intended to prioritize that plan's patients. Some therapists join MA networks as part of blanket credentialing arrangements but set their availability in a way that effectively excludes the plan's reimbursement rates in practice.
• Providers listed at incorrect locations. A group practice may have multiple addresses listed; individual clinicians may not work at every location, creating directory entries that route patients to offices where they won't be seen.

The incentive structure explains why plans allow ghost networks to persist. Federal regulators require MA plans to demonstrate "network adequacy" — minimum ratios of providers per beneficiary and maximum time-and-distance standards. A plan that can show its directory contains 200 behavioral health providers meets adequacy standards on paper, regardless of how many of those 200 will actually schedule a new patient.

The OIG found that roughly three-quarters of inactive behavioral health providers listed in the reviewed plans should not have been included in the network at all — either because no one was working at the listed location, or because the provider indicated they would not treat patients enrolled in that plan (HHS OIG, October 2025). The directory appeared adequate. The patients who called those numbers found otherwise.

The OIG's findings go beyond individual ghost listings. In a significant portion of the plans reviewed, the behavioral health network problem wasn't a matter of a few outdated entries — it was structural absence:

Finding	Medicare Advantage	Medicaid Managed Care
Share of listed behavioral health providers who were inactive (ghost providers)	55%	28%
Plans with networks covering less than 10% of the behavioral health workforce in their counties	15 plans	—
Plans with zero in-network behavioral health providers in the counties	7 plans	—

Source: HHS OIG Data Brief OEI-02-23-00540, October 2025.

Seven Medicare Advantage plans had zero in-network behavioral health providers in their service counties. These aren't edge cases — they're plans that MA beneficiaries enrolled in, paid premiums for, and expected to use for mental health care.

A companion OIG study published in 2024 added another layer. When researchers called behavioral health providers listed in Medicare and Medicaid directories as new patients seeking appointments, 45% of providers said they were not available to treat new patients enrolled in traditional Medicare, Medicare Advantage, or Medicaid managed care (HHS OIG, 2024). That study used a mystery-shopper methodology — callers identifying as beneficiaries — which means the inaccessibility isn't theoretical. It's what beneficiaries experience when they try to use the coverage they pay for.

Taken together, the two reports document both sides of the access failure: network directories that overstate available providers, and a significant share of even active listed providers who won't accept new patients anyway. The cumulative effect on any individual MA beneficiary trying to access mental health care is substantial.

The ghost network problem is downstream of a more fundamental issue: the economics of participating in Medicare Advantage behavioral health networks don't work for most private practice therapists.

Medicare Advantage plans base reimbursement on traditional Medicare fee schedules, with negotiated adjustments that typically cluster near Medicare rates rather than commercial insurance rates. For behavioral health specifically, Medicare has historically reimbursed mental health providers at rates meaningfully below what private insurers pay — and well below what therapists can earn through private-pay arrangements.

The gap is material. Analysis of private practice session data shows that the average private-pay therapy session nationally runs approximately $159 per appointment, while the average insurance reimbursement for the same service is closer to $111 — a discount of roughly 36%. For therapists who built practices around private-pay or commercial insurance rates, the math of accepting MA at or near Medicare levels often doesn't hold up.

The OIG surveys confirmed this directly. When researchers asked inactive providers — those listed in directories but not treating plan enrollees — why they weren't participating, the two most commonly cited reasons were administrative burden and low payment rates (HHS OIG, 2024). These answers aren't surprising, but the federal confirmation matters: the access failure in MA behavioral health isn't primarily a therapist recruitment problem. It's a structural compensation and administrative problem that MA plans have not resolved.

The administrative dimension compounds the rate issue. MA behavioral health billing involves prior authorization requirements, claims appeal cycles, and credentialing processes that consume practice bandwidth disproportionate to the revenue generated. A therapist who has spent years optimizing a private-pay practice for simplicity finds that joining an MA network adds complexity — and a meaningful rate reduction — without proportionate upside. The shift toward private-pay practice visible across the profession over the last several years reflects this calculus at scale.

When therapists do join MA networks and later stop accepting new MA patients — while remaining technically enrolled — they become exactly the ghost providers the OIG documented. The plan doesn't always know; the directory isn't updated in time; the beneficiary calls and learns the therapist stopped taking that insurance.

The OIG findings landed alongside a significant CMS regulatory push to tighten behavioral health network adequacy requirements — a push that is changing the formal rules MA plans must follow and accelerating through 2026 and 2027.

In April 2024, CMS published the Contract Year 2025 Medicare Advantage Final Rule (CMS-4205-F), which created a new formal specialty category — "Outpatient Behavioral Health" — for purposes of network adequacy evaluation. This category includes:

• Marriage and Family Therapists (MFTs)
• Mental Health Counselors (MHCs and LPCs)
• Opioid Treatment Program providers
• Community Mental Health Centers
• Addiction medicine specialists and facilities

The significance of this change is twofold. First, MA plans must now specifically demonstrate that they have adequate access to these provider types — not just to psychiatrists and psychologists — when CMS evaluates their network adequacy. Second, the Consolidated Appropriations Act of 2023 created an entirely new Medicare statutory benefit category for services provided by MFTs and MHCs, who became Medicare-eligible providers for the first time in 2024. These credentials had simply not been recognized as Medicare-reimbursable before CAA 2023 implementation took effect.

CMS also added a network adequacy credit — a 10-percentage-point bonus toward meeting beneficiary-within-time-and-distance standards — for MA plans that include at least one telehealth behavioral health provider in their network. This credit gives MA plans a practical path to demonstrating behavioral health adequacy in rural and underserved areas where in-person providers are scarce. See how telehealth policy shifts in 2026 intersect with these network adequacy changes for providers treating Medicare beneficiaries across state lines.

Whether the regulatory changes produce better actual access depends on enforcement — which is precisely where the OIG found CMS relying on self-reported plan data rather than active verification. The October 2025 report recommended that CMS develop better data tools to monitor network accuracy and continue exploring a centralized national provider directory to replace fragmented, plan-level directories.

The Medicare Advantage behavioral health situation creates distinct practical considerations for private practice therapists depending on where their practice is currently positioned.

If you currently accept Medicare Advantage: The new CMS network adequacy requirements mean MA plans are under more formal pressure to maintain accurate directories and meet adequacy standards with providers who are genuinely available. That creates some leverage if you're in network negotiations. You are solving a problem the plans are now federally required to demonstrate they've addressed — and the OIG data gives that leverage specific documentation. Before making credentialing decisions, review the 2027 Medicare fee schedule changes affecting behavioral health reimbursement rates, as the multi-year RVU phase-in for behavioral health codes is still completing.

If you're an MFT or MHC newly Medicare-eligible under CAA 2023: This is a significant change to your practice economics that many therapists in those credentials haven't fully evaluated. Before 2024, MFTs and MHCs simply could not enroll in Medicare. Now they can — which means MA panel participation is newly available, and the adequacy requirements give MA plans a regulatory reason to recruit you specifically. Whether the rates work for your practice requires the same analysis as for any therapist considering Medicare, but the option now exists where it didn't before.

If you're private-pay or out-of-network: The ghost network research documents something your clients may already be discovering. MA beneficiaries who need mental health care and cannot find an in-network provider often end up paying out-of-pocket or seeking out-of-network providers. With 55% of listed MA behavioral health providers unavailable, many MA enrollees are effectively searching for mental health care the same way private-pay clients do — online, through referrals, and by Google. Your website, your Google Business Profile, and your AI citation profile are as relevant to MA-enrolled seniors as to any other prospective client.

The mental health parity enforcement challenges of the last two years have compounded this dynamic: insurance coverage of mental health services has been both legally mandated and operationally incomplete for years. Therapists who treat insurance coverage as one channel among several — rather than the primary driver of their client pipeline — tend to be more resilient when any single payer channel underperforms.

The practical implication of the ghost network problem for private practice therapists doesn't appear in the OIG's policy recommendations, but it's immediately relevant: when beneficiaries call listed providers and can't get appointments, they don't give up — they search online.

A Medicare Advantage enrollee who calls three listed therapists and reaches disconnected lines or voicemails that are never returned will eventually open Google and type "therapist near me," "therapist accepting Medicare," or "[specialty] therapist [city]." At that point, the competition for that patient shifts entirely from the plan's directory to the organic search landscape — and whichever therapist has invested in their web presence is positioned to win.

This dynamic runs through mental health access research broadly: when formal channels fail, patients turn to search. The OIG's findings suggest that formal channels in MA behavioral health are failing at an unusually high rate. Therapists who appear prominently in local search, who maintain an accurate and detailed Google Business Profile, and who have a website with clear service information and a functioning intake form are capturing exactly the patients the ghost network system leaves stranded.

WebsiteTherapy builds that kind of owned, multi-channel visibility for private practice therapists — an AI-optimized website that surfaces in local search, a regularly updated blog that establishes specialty authority, and structured data that gets your practice cited in AI-driven search tools like ChatGPT, Perplexity, and Google's AI Overviews. When the plan directory fails, your website is what answers. See how it works, or explore the full feature set — including the visitor agent that handles after-hours inquiries from patients who found you because the system's official channels came up empty.