Built on the authoritative federal record
The primary sources, named on every page.
These are the federal agencies whose public datasets Fonteum ingests and attributes — the issuing authorities, not customers or partners. Every figure on the site links back to one of them.
See the full source registry, with license and refresh cadence for each →
Reproducible by design
Every figure traces to its federal source.
14-tuple provenance
Every rendered fact ties to a source URL, dataset ID, snapshot date, row key, and SHA-256 — the full chain-of-custody record.
Reproducible SQL
Each study ships the exact query behind its figures, run against the cited federal snapshot. Re-run it yourself.
Daily reconciliation
Published counts are reconciled against the upstream federal datasets on a daily cadence, with drift logged.
Named medical review
Reviewed by Jennifer Montecillo, MD, medical reviewer. Non-practicing medical reviewer.
Two doors
Use the free API and open data
Query providers, facilities, sanctions, and quality scores — each field carrying its federal source. Self-serve, no call to start.
Talk to us
Managed pilots, enterprise terms, and audit-ready, signed attestation packages for compliance, risk, and research teams.
The substrate, by the numbers
Fonteum mirrors the New Hampshire Department of Health and Human Services provider-exclusion list as a screening aid: 76 records, 51 (67%) carrying an NPI, of which 48 match a provider in our graph. Records are not a determination by Fonteum; reinstatements can lag — cross-check any record at the source.
Showing the 48 most-recent records that match a provider NPI in Fonteum’s graph (of 48matched). Select a name to open its provider profile, where the exclusion sits beside the provider’s other source-traced facts. Records without an NPI are counted in the totals above but are not individually listed.
| Provider (as published) | Provider type | Status | Listed |
|---|---|---|---|
| Denis Patrick Callahan | Social Worker | Excluded | 2025-07-20 |
| Lisa Marie Gauthier | Clinical Social Worker | Excluded | 2024-10-18 |
| Donald J. Tibbetts | Physician Assistant | Excluded | 2024-05-10 |
| Colleen A Murphy | Physician | Excluded | 2024-04-24 |
| Thomas Marks | Physician | Excluded | 2023-11-04 |
By exclusion era: 2010s (43) · 2020s (32) · earliest 2012.
| Randolph Lowry | Physician | Excluded | 2022-07-30 |
| David A. Lapides | Physician | Excluded | 2022-04-08 |
| Labsource LLC | Non-Hospital Connected Lab | Excluded | 2020-10-28 |
| Hill Rizvi | Physician | Excluded | 2020-05-02 |
| Erin Marie McCarthy | APRN | Excluded | 2019-11-22 |
| Richard Gaudette | Home Care Service Provider | Excluded | 2019-10-02 |
| Amy L. Wyatt | Osteopath | Excluded | 2019-03-14 |
| Smart Lab LLC | Non-Hospital connected lab | Excluded | 2019-02-07 |
| Robert Vidaver | Physician | Excluded | 2018-11-14 |
| Loretta Obi | Physician | Excluded | 2018-10-04 |
| Joan Elkins | Physician | Excluded | 2018-09-21 |
| Wendy Pavnick | Physician Assistant | Excluded | 2018-08-06 |
| Scott M. Davis | Physician | Excluded | 2018-07-05 |
| Hugh MacDonald | Physician | Excluded | 2018-05-16 |
| Kerry Wu | Dentist | Excluded | 2018-05-01 |
| Kerry Wu Dental Office PC | Dental Office | Excluded | 2018-05-01 |
| Ayman Jacobs | Dentist | Excluded | 2018-04-30 |
| Barbara Handelman | Mental Health | Excluded | 2018-04-19 |
| Tzvetan Tzvetanov | Physician | Excluded | 2018-03-08 |
| Nancy Kressin | Physician | Excluded | 2017-11-15 |
| Barbara Goldberg | Physician | Excluded | 2017-07-20 |
| Eric Knight | Physician | Excluded | 2017-06-30 |
| Christopher Clough | Physician Assistant | Excluded | 2017-06-20 |
| Centrad Healthcare, LLC | Medical Supplier | Excluded | 2017-02-14 |
| Margarethe Chobanian | Physician | Excluded | 2017-02-01 |
| Medical Arts Surgical & Fitting Service Of Nh | Medical Supplier | Excluded | 2016-12-09 |
| Arriva Medical, LLC | Medical Supplier | Excluded | 2016-11-04 |
| William Foord | Physician | Excluded | 2016-10-17 |
| Anton Heins | Physician | Excluded | 2016-03-07 |
| Heidi Ashih | Physician | Excluded | 2016-02-11 |
| Med-Care Diabetic And Medical Supplies, Inc. | Medical Supplier | Excluded | 2015-12-12 |
| Maureen E. Malone | Mental Health | Excluded | 2015-07-22 |
| Lloyd Kasper | Physician | Excluded | 2015-05-18 |
| Hasan Duymazlar | Physician | Excluded | 2014-11-20 |
| New England Brace Company, Inc. | Medical Supplier | Excluded | 2014-11-14 |
| New England Brace Company, Inc. | Medical Supplier | Excluded | 2014-11-14 |
| New England Brace Company, Inc. | Medical Supplier | Excluded | 2014-11-10 |
| Gail S. Ford | Physician | Excluded | 2014-07-15 |
| Richard J. Keller | Physician | Excluded | 2014-05-17 |
| Spencer Van Wilking | Physician | Excluded | 2014-02-24 |
| New England Brace Company, Inc. | Medical Supplier | Excluded | 2013-11-06 |
| New England Brace Company, Inc. | Medical Supplier | Excluded | 2013-11-06 |
| Jeffery Spiegler | Mental Health | Excluded | 2012-06-08 |