Denis Callahan (NPI 1134364672) is a U.S. healthcare provider, resolved across 2 federal sources. An active OIG exclusion is on record on the federal LEIE as of 2026-05-08. Each field below carries the federal source and the snapshot date it came from.
Cross-source identity
One NPI across the federal graph
National Provider Identifier 1134364672 as it appears in every federal dataset Fonteum holds. Each row is a distinct public source; the chip carries the source and the snapshot date behind that field — the record-level form of the source-provenanced graph.
| Federal source | Key | What it provides | Provenance |
|---|---|---|---|
| OIG LEIE |
Quality
MIPS quality score
CMS Quality Payment Program Merit-based Incentive Payment System (MIPS) final score, where this clinician participated. Absence of a score is not a quality signal — many clinicians report through a group or are exempt.
Enrollment & sanctions
Standing
Ownership & affiliations
Graph relationships
One-hop relationships in the resolved entity graph — chain membership, ownership, and operation edges, each backed by a federal source row. Most individual clinicians carry none; edges populate for owners and organizations as the Lane D backfill runs.
Record history
History & time-travel
Every field on this record is stored bitemporally — both when the fact was true in the world and when Fonteum recorded it. Open the time-travel view to reconstruct this record as of any past date, or to read each field with the source and dates behind it.