35 open-access studies across three editorial desks. Every study cites its source, snapshot date, and limitations. Datasets downloadable. Free to cite with attribution.
Fonteum analysis is clearly distinguished from the source datasets we cite. CMS ratings appear as CMS ratings; Fonteum counts appear as Fonteum counts.
All numbers below describe the federal public-record datasets Fonteum ingests and the studies published from them — each sourced, dated, and free to cite. They are not a U.S. market estimate.
CMS NPPES · weekly refresh
OIG LEIE · monthly refresh
14,635 facilities · CMS Care Compare
CMS PBJ · CY2025Q2
Open access · free CSV/JSON
Featured · May 25, 2026
Score band analysis of 477,137 clinicians in the CMS Quality Payment Program — performance year 2023. National mean, median, high-performer share, and payment penalty exposure.
State, county, or ZIP × 13 medical specialties. Per-100k density, national percentile, and a citeable result block. CMS NPPES + U.S. Census, fully sourced. No signup.
The No Surprises Act generated over 580,000 IDR disputes in its first 18 months — far exceeding CMS projections. Providers win ~71% of completed arbitrations, receiving payment above the Qualifying Payment Amount. MRF compliance improved significantly after CMS enforcement notices, but gaps persist among smaller regional issuers.
1,373 Health Center Program awardees operating ~9,000 FQHC sites served 30.5 million patients in 2022. Medicaid and uninsured patients make up 68% of FQHC patient volume. Wyoming and the Dakotas have the lowest site density in the nation — less than 1 FQHC per 50,000 residents.
Analysis of 68,055 OIG LEIE records spanning 1977–2026: exclusion-type breakdown, statutory authority distribution, NPI match rate, and state concentration patterns.
Breakdown of 68,211 CMS Provider of Services records by facility type and state — the CCN-keyed backbone that underlies all Care Compare cross-referencing.
Ownership breakdown of 6,943 CMS-certified hospice providers: for-profit concentration at 77.8%, state distribution, and the CA/TX duopoly accounting for 52% of national hospice capacity.
Score-band breakdown of 477,137 CMS MIPS-scored clinicians: exceptional, above-average, meeting, and below-threshold performers — with payment implications for the 4.3% in penalty territory.
CMS quality star rating distribution for 12,392 Medicare-certified home health agencies — performance tiers, ownership mix, and the 35.8% of agencies below the minimum claim threshold. Star ratings are CMS-published; Fonteum does not rate, inspect, verify, endorse, or guarantee any agency.
39.3% of Medicare-participating hospitals are financially distressed. National average operating margin: −13.84%. Derived from CMS HCRIS cost reports — the same data Definitive Healthcare charges $30K/yr for, published free.
418,148 CMS health deficiency citations across 14,635 nursing homes — severity breakdown, top F-tags, and state-level harm rate (G+ citations per facility). Illinois leads at 4.57 harm-rate citations per facility; New Hampshire is lowest at 0.31 — a 14.7x disparity. CMS data with cryptographic provenance.
Only 28.92% of nursing homes meet the 4.1 HPRD research standard — and 7.4% are critically understaffed below 3.0 HPRD. The Biden-era 3.48 HPRD minimum was rescinded December 3, 2025. CMS Payroll-Based Journal data, 14,362 facilities.
Three years of CMS enforcement actions (April 2023 – March 2026) against U.S. nursing homes — $467,344,898 in fines across 6,919 facilities, plus 2,553 payment denials (Medicare/Medicaid reimbursement suspensions). CMS enforcement data is published by CMS; this report cites it, it does not produce it.
Per-hospital operating margin vs the national average, financial distress flags, and margin gap — derived from CMS HCRIS cost report data. Free, with cryptographic provenance.
Per-Medicare-Advantage-plan directory accuracy compliance scores under the REAL Act (ACA §1002 / 42 CFR §422.111). Completeness, currency, accuracy, and ghost-network risk scored from NPPES, CMS Care Compare, and PECOS cross-source data. Q2 2026 issuance.
Cross-source field-level agreement between CMS NPPES, CMS Care Compare, and PECOS for every NPI present in ≥2 sources — aggregated to national, state, and specialty scope. Quarterly index; Q2 2026 issuance.
82.40% of CMS's top-10-chain ownership percentages are missing. The Trump administration suspended the mechanism that was supposed to close the gap. PE-owned nursing homes face 11% higher resident mortality and 10× greater bankruptcy risk.
Active U.S. chiropractors per 100,000 residents, by state, from the public CMS NPI Registry. Public-records methodology with per-state coverage flags.
Active U.S. orthopedic surgeons per 100,000 residents, by state, from the public CMS NPI Registry — individually-enumerated providers (NPPES Type 1). Musculoskeletal disease is the leading source of disability in the United States; orthopedic supply per state tells a sharper story than national totals.
Active U.S. ophthalmologists per 100,000 residents, by state, from the public CMS NPI Registry — individually-enumerated providers (NPPES Type 1). Vision care is the most common medical specialty referral; ophthalmologist supply per state tells the access story national totals obscure.
Active U.S. gastroenterologists per 100,000 residents, by state, from the public CMS NPI Registry — individually-enumerated providers (NPPES Type 1). Colorectal cancer is the second-leading cause of cancer death; gastroenterologist supply per state is the leading indicator of screening capacity.
Active U.S. urologists per 100,000 residents, by state, from the public CMS NPI Registry — individually-enumerated providers (NPPES Type 1). Rural urology shortages are the most extensively documented specialty access gap in the United States; state-level supply is the leading indicator.
Active U.S. otolaryngologists per 100,000 residents, by state, from the public CMS NPI Registry — individually-enumerated providers (NPPES Type 1). Hearing loss, head and neck cancer, and sleep apnea all funnel through ENT supply; state-level density tells the access story.
Active U.S. cardiologists per 100,000 residents, by state, from the public CMS NPI Registry. Heart disease remains the #1 cause of U.S. death; cardiologist supply per state tells a sharper story than national totals.
Active U.S. obstetrician-gynecologists per 100,000 residents, by state, from the public CMS NPI Registry — individually-enumerated providers (NPPES Type 1) only. Maternity care deserts now affect tens of millions of Americans; state-level OBGYN supply is the leading indicator.
Active U.S. pediatricians per 100,000 residents, by state, from the public CMS NPI Registry — individually-enumerated providers (NPPES Type 1) only. Pediatrician supply is uneven across states with material implications for child health access.
Active U.S. neurologists per 100,000 residents, by state, from the public CMS NPI Registry. Aging population + dementia growth are colliding with a documented neurologist supply gap.
Active U.S. medical oncologists per 100,000 residents, by state, from the public CMS NPI Registry. Cancer care access is geographically concentrated; state oncologist supply maps to cancer mortality patterns.
Active U.S. psychiatrists per 100,000 residents, by state, from the public CMS NPI Registry. Mental health access remains one of the largest public-health gaps in U.S. medicine; state psychiatrist density tells a sharper story than national headlines.
Active U.S. dermatologists per 100,000 residents, by state, from the public CMS NPI Registry.
How Medicare-certified hospice provider count, ownership mix, and recent-certification share distribute across the United States — based on the CMS Care Compare Hospice General Information dataset (6,943 providers, snapshot May 2026). The Hospice General Information dataset does not publish an overall star rating; this report cites provider availability, not quality.
How CMS quality-of-patient-care star ratings and ownership mix distribute across U.S. Medicare-certified home health agencies — based on the CMS Care Compare Home Health Care Agencies dataset (12,392 agencies, snapshot May 2026). CMS ratings are published by CMS; this report cites them, it does not produce them.
How CMS five-star ratings, ownership mix, and chain affiliation distribute across U.S. dialysis facilities — based on the CMS Care Compare Dialysis Facility Listing dataset (7,557 Medicare-certified facilities, snapshot May 2026). CMS ratings are published by CMS; this report cites them, it does not produce them.
How CMS overall star ratings, ownership mix, and Special Focus Facility counts distribute across the 50 states + DC and territories — based on the CMS Care Compare Nursing Home Provider Information dataset (14,699 Medicare/Medicaid-certified facilities, snapshot May 2026). CMS ratings are published by CMS; this report cites them, it does not produce them.
How dermatology-practice supply distributes across the United States — 3,339 NPPES-active dermatology NPIs, May 2026 NPPES snapshot. All counts derive from the CMS NPPES weekly full-replacement file.
An original data study mapping 3,039 active medical weight loss clinics across 44 US states — with a full 50-state access gap analysis, GLP-1 adoption data, and the geographic mismatch between where obesity is highest and where clinics actually exist.
The studies above draw on the following datasets. For tier, refresh cadence, fields used, and limitations per source, see /sources.
Each card below is either a v0 methodology page (live, published for review before any rankings exist) or a planned study with the methodology still in draft. No findings, rankings, or numbers appear until the pipeline producing them has been reviewed and signed off.
Claimability Gap Report
Per-vertical, per-state gap between indexed providers and providers who have claimed their listing. Frames where the owner-claim funnel has the most room to compound. Methodology in progress; data pipeline draws only on Fonteum-owned claim status, not on third-party signals.
Specialist Access Maps
Per-specialty access maps for medical_wellness verticals — dermatology, chiropractic, fertility — answering 'how far is the nearest licensed specialist' in plain English. Planned methodology pulls public licensing-board data plus Fonteum-owned coverage; no quality claims, no review aggregation, no clinical guidance.
Real numbers from real datasets.
Every figure on this hub traces to a dated snapshot file committed to the Fonteum codebase. We do not estimate. When a number is missing from the snapshot, the section is marked as deferred rather than filled in.
Fonteum analysis is not a quality measurement.
We do not independently rate, inspect, verify, endorse, or guarantee any provider. CMS ratings appear as CMS ratings; Fonteum counts appear as Fonteum counts.
Datasets are downloadable.
Every study with chart-level data publishes both the JSON used to draw the chart and a sibling CSV. Where a study aggregates an underlying source dataset, we cite the source URL and the snapshot date.
Limitations published, prominently.
Every study carries a Limitations section in plain language. A finding without a stated limitation is a finding we do not publish.
Full standards (data sourcing, refresh cadence, corrections): read the methodology.
Free to cite with attribution.
Every study has APA, URL, and BibTeX citation formats. For raw datasets or press inquiries, email press@fonteum.com.