Cross-source identifiers
Every current identifier attachment, with the link method and confidence carried verbatim — deterministic links are 1.000; probabilistic links surface their real matcher confidence, never rounded up.
| Scheme | Value | Source table | Link method | Confidence | Since | Provenance |
|---|---|---|---|---|---|---|
| cms_op_profile_id | 7231368 | cms_open_payments | exact_npi_in_open_payments | 1.000 | 2026-06-13 | evidencerecorded: 2026-06-13 methodology: entity-graph/v1 evidence: {"npi":"1174086391","rule":"D-OP-NPI","recipient_profile_id":"7231368"} |
| npi | 1174086391 | nppes_providers | deterministic_pk | 1.000 | 2026-06-11 | evidencerecorded: 2026-06-11 methodology: entity-graph/v1 evidence: {"rule":"D-NPI","source_pk":"1174086391","entity_type_code":"1"} |
| pac_id | 9032444120 | pecos_providers | exact_npi_in_pecos | 1.000 | 2026-06-16 | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 evidence: {"npi":"1174086391","rule":"D-PECOS","enrlmt_id":"I20230717001897","pecos_asct_cntl_id":"9032444120"} |
| pecos_enrlmt_id | I20241014001061 | pecos_providers | exact_npi_in_pecos | 1.000 | 2026-06-16 | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 evidence: {"npi":"1174086391","rule":"D-PECOS","enrlmt_id":"I20241014001061"} |
| pecos_enrlmt_id | I20241024004015 | pecos_providers | exact_npi_in_pecos | 1.000 | 2026-06-16 | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 evidence: {"npi":"1174086391","rule":"D-PECOS","enrlmt_id":"I20241024004015"} |
| pecos_enrlmt_id | I20241203003492 | pecos_providers | exact_npi_in_pecos | 1.000 | 2026-06-16 | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 evidence: {"npi":"1174086391","rule":"D-PECOS","enrlmt_id":"I20241203003492"} |
| pecos_enrlmt_id | I20241203004616 | pecos_providers | exact_npi_in_pecos | 1.000 | 2026-06-16 | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 evidence: {"npi":"1174086391","rule":"D-PECOS","enrlmt_id":"I20241203004616"} |
| pecos_enrlmt_id | I20250102003765 | pecos_providers | exact_npi_in_pecos | 1.000 | 2026-06-16 | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 evidence: {"npi":"1174086391","rule":"D-PECOS","enrlmt_id":"I20250102003765"} |
| pecos_enrlmt_id | I20250113003584 | pecos_providers | exact_npi_in_pecos | 1.000 | 2026-06-16 | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 evidence: {"npi":"1174086391","rule":"D-PECOS","enrlmt_id":"I20250113003584"} |
| pecos_enrlmt_id | I20250304000741 | pecos_providers | exact_npi_in_pecos | 1.000 | 2026-06-16 | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 evidence: {"npi":"1174086391","rule":"D-PECOS","enrlmt_id":"I20250304000741"} |
| pecos_enrlmt_id | I20250409003408 | pecos_providers | exact_npi_in_pecos | 1.000 | 2026-06-16 | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 evidence: {"npi":"1174086391","rule":"D-PECOS","enrlmt_id":"I20250409003408"} |
| pecos_enrlmt_id | I20250410001692 | pecos_providers | exact_npi_in_pecos | 1.000 | 2026-06-16 | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 evidence: {"npi":"1174086391","rule":"D-PECOS","enrlmt_id":"I20250410001692"} |
| pecos_enrlmt_id | I20250415003300 | pecos_providers | exact_npi_in_pecos | 1.000 | 2026-06-16 | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 evidence: {"npi":"1174086391","rule":"D-PECOS","enrlmt_id":"I20250415003300"} |
| pecos_enrlmt_id | I20250418001090 | pecos_providers | exact_npi_in_pecos | 1.000 | 2026-06-16 | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 evidence: {"npi":"1174086391","rule":"D-PECOS","enrlmt_id":"I20250418001090"} |
| pecos_enrlmt_id | I20250519003430 | pecos_providers | exact_npi_in_pecos | 1.000 | 2026-06-16 | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 evidence: {"npi":"1174086391","rule":"D-PECOS","enrlmt_id":"I20250519003430"} |
| pecos_enrlmt_id | I20250627001272 | pecos_providers | exact_npi_in_pecos | 1.000 | 2026-06-16 | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 evidence: {"npi":"1174086391","rule":"D-PECOS","enrlmt_id":"I20250627001272"} |
| pecos_enrlmt_id | I20250923001174 | pecos_providers | exact_npi_in_pecos | 1.000 | 2026-06-16 | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 evidence: {"npi":"1174086391","rule":"D-PECOS","enrlmt_id":"I20250923001174"} |
| pecos_enrlmt_id | I20230717001897 | pecos_providers | exact_npi_in_pecos | 1.000 | 2026-06-16 | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 evidence: {"npi":"1174086391","rule":"D-PECOS","enrlmt_id":"I20230717001897"} |
| pecos_enrlmt_id | I20240816001286 | pecos_providers | exact_npi_in_pecos | 1.000 | 2026-06-16 | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 evidence: {"npi":"1174086391","rule":"D-PECOS","enrlmt_id":"I20240816001286"} |
Graph edges
One-hop relationships — ownership, chain membership, operation — each backed by a federal source row.
| Relationship | Entity | Confidence | Source table | Provenance |
|---|---|---|---|---|
| ← pays | ABBVIE INC. (IL) | 1.000 | cms_open_payments | evidencerecorded: 2026-06-13 methodology: entity-graph/v1 attributes: {"source":"cms_open_payments"} evidence: {"rule":"D-OP-PAYS","record_type":"general","recipient_npi":"1174086391","manufacturer_id":"100000000204","nature_of_payment":"Food and Beverage"} |
| ← pays | Otsuka America Pharmaceutical, Inc. (MD) | 1.000 | cms_open_payments | evidencerecorded: 2026-06-13 methodology: entity-graph/v1 attributes: {"source":"cms_open_payments"} evidence: {"rule":"D-OP-PAYS","record_type":"general","recipient_npi":"1174086391","manufacturer_id":"100000010723","nature_of_payment":"Food and Beverage"} |
| ← pays | Vanda Pharmaceuticals Inc. (DC) | 1.000 | cms_open_payments | evidencerecorded: 2026-06-14 methodology: entity-graph/v1 attributes: {"source":"cms_open_payments"} evidence: {"rule":"D-OP-PAYS","record_type":"general","recipient_npi":"1174086391","manufacturer_id":"100000071361","nature_of_payment":"Food and Beverage"} |
| ← pays | Almatica Pharma LLC (NJ) | 1.000 | cms_open_payments | evidencerecorded: 2026-06-14 methodology: entity-graph/v1 attributes: {"source":"cms_open_payments"} evidence: {"rule":"D-OP-PAYS","record_type":"general","recipient_npi":"1174086391","manufacturer_id":"100000081390","nature_of_payment":"Food and Beverage"} |
| ← pays | Lundbeck LLC (IL) | 1.000 | cms_open_payments | evidencerecorded: 2026-06-14 methodology: entity-graph/v1 attributes: {"source":"cms_open_payments"} evidence: {"rule":"D-OP-PAYS","record_type":"general","recipient_npi":"1174086391","manufacturer_id":"100000000236","nature_of_payment":"Food and Beverage"} |
| ← pays | Neurocrine Biosciences, Inc. (CA) | 1.000 | cms_open_payments | evidencerecorded: 2026-06-14 methodology: entity-graph/v1 attributes: {"source":"cms_open_payments"} evidence: {"rule":"D-OP-PAYS","record_type":"general","recipient_npi":"1174086391","manufacturer_id":"100000186746","nature_of_payment":"Food and Beverage"} |
Current record
Current claims returned for this entity, grouped by provenance subject. The table exposes the source identifier recorded for each claim.
provider · 1174086391 JSON
Provider screening signals
NPI-keyed source families read directly for 1174086391: federal and state integrity lists, CMS Open Payments, Order and Referring eligibility, Medicare opt-out, and enrollment revalidation. Cells expose the source and provenance fields supplied by the selected record. A screening aid — re-confirm any match against the primary source before acting; absence means nothing on file in the data Fonteum currently holds, never a guarantee none exists.
Sanctions & integrity
Coverage staleExclusion coverage is stale or cannot be reconciled to an attested source artifact. This result is indeterminate and must not be treated as a clearance; check the current issuing-agency lists.
- Coverage status: indeterminate
- Screened 26 integrity lists; no negative determination was made.
Source:OIG LEIE +25 moreChecked 2026-08-04
14-tuple provenance (26)
OIG LEIE
source: HHS Office of Inspector General (LEIE)
dataset_id: oig-leie
snapshot: —
methodology: v2026.05.0
last_checked: 2026-08-04T21:36:49.073Z
confidence: 1
data_availability: indeterminate, not_reconciled_to_attested_artifact, snapshot_date_unavailable
pipeline_version: 0236392
doi: —
license: US-Government-Works
coverage_start: 1977-10-25
coverage_end: ongoing
slsa_provenance_url: —
SAM.gov Exclusions
source: U.S. General Services Administration (GSA), System for Award Management (SAM.gov)
dataset_id: sam-gov-exclusions
snapshot: —
methodology: v2026.05.0
last_checked: 2026-08-04T21:36:49.073Z
confidence: 1
data_availability: indeterminate, not_reconciled_to_attested_artifact, snapshot_date_unavailable
pipeline_version: 0236392
doi: —
license: US-Government-Works
coverage_start: 2012-07-30
coverage_end: ongoing
slsa_provenance_url: —
NY Medicaid (OMIG)
source: NY Office of the Medicaid Inspector General (OMIG)
dataset_id: ny-omig-exclusions
snapshot: —
methodology: v2026.05.0
last_checked: 2026-08-04T21:36:49.073Z
confidence: 1
data_availability: indeterminate, not_reconciled_to_attested_artifact, snapshot_date_unavailable
pipeline_version: 0236392
doi: —
license: NY-OMIG-public-records
coverage_start: —
coverage_end: —
slsa_provenance_url: —
OH Medicaid (ODM)
source: Ohio Department of Medicaid (ODM)
dataset_id: oh-odm-exclusions
snapshot: —
methodology: v2026.05.0
last_checked: 2026-08-04T21:36:49.073Z
confidence: 1
data_availability: indeterminate, not_reconciled_to_attested_artifact, snapshot_date_unavailable
pipeline_version: 0236392
doi: —
license: OH-ODM-public-records
coverage_start: —
coverage_end: —
slsa_provenance_url: —
GA Medicaid (DCH OIG)
source: Georgia DCH Office of Inspector General
dataset_id: ga-dch-exclusions
snapshot: —
methodology: v2026.05.0
last_checked: 2026-08-04T21:36:49.073Z
confidence: 1
data_availability: indeterminate, not_reconciled_to_attested_artifact, snapshot_date_unavailable
pipeline_version: 0236392
doi: —
license: GA-DCH-public-records
coverage_start: —
coverage_end: —
slsa_provenance_url: —
PA Medicaid (Medicheck)
source: Pennsylvania Department of Human Services (DHS)
dataset_id: pa-dhs-medicheck
snapshot: —
methodology: v2026.05.0
last_checked: 2026-08-04T21:36:49.073Z
confidence: 1
data_availability: indeterminate, not_reconciled_to_attested_artifact, snapshot_date_unavailable
pipeline_version: 0236392
doi: —
license: PA-DHS-public-records
coverage_start: —
coverage_end: —
slsa_provenance_url: —
NC Medicaid (DHHS)
source: NC DHHS, Division of Health Benefits (NC Medicaid)
dataset_id: nc-dhhs-exclusions
snapshot: —
methodology: v2026.05.0
last_checked: 2026-08-04T21:36:49.073Z
confidence: 1
data_availability: indeterminate, not_reconciled_to_attested_artifact, snapshot_date_unavailable
pipeline_version: 0236392
doi: —
license: NC-DHHS-public-records
coverage_start: —
coverage_end: —
slsa_provenance_url: —
MD Medicaid
source: Maryland Department of Health (MDH)
dataset_id: md-mdh-sanctioned
snapshot: —
methodology: v2026.05.0
last_checked: 2026-08-04T21:36:49.073Z
confidence: 1
data_availability: indeterminate, not_reconciled_to_attested_artifact, snapshot_date_unavailable
pipeline_version: 0236392
doi: —
license: MD-public-records
coverage_start: —
coverage_end: —
slsa_provenance_url: —
WA Medicaid
source: Washington State Health Care Authority (HCA)
dataset_id: wa-hca-termination-exclusion
snapshot: —
methodology: v2026.05.0
last_checked: 2026-08-04T21:36:49.073Z
confidence: 1
data_availability: indeterminate, not_reconciled_to_attested_artifact, snapshot_date_unavailable
pipeline_version: 0236392
doi: —
license: WA-public-records
coverage_start: —
coverage_end: —
slsa_provenance_url: —
IA Medicaid
source: Iowa Health and Human Services (Iowa Medicaid)
dataset_id: ia-medicaid-exclusions
snapshot: —
methodology: v2026.05.0
last_checked: 2026-08-04T21:36:49.073Z
confidence: 1
data_availability: indeterminate, not_reconciled_to_attested_artifact, snapshot_date_unavailable
pipeline_version: 0236392
doi: —
license: IA-public-records
coverage_start: —
coverage_end: —
slsa_provenance_url: —
MS Medicaid
source: Mississippi Division of Medicaid (DOM)
dataset_id: ms-dom-sanctioned
snapshot: —
methodology: v2026.05.0
last_checked: 2026-08-04T21:36:49.073Z
confidence: 1
data_availability: indeterminate, not_reconciled_to_attested_artifact, snapshot_date_unavailable
pipeline_version: 0236392
doi: —
license: MS-public-records
coverage_start: —
coverage_end: —
slsa_provenance_url: —
MT Medicaid
source: Montana Department of Public Health and Human Services (DPHHS)
dataset_id: mt-dphhs-exclusions
snapshot: —
methodology: v2026.05.0
last_checked: 2026-08-04T21:36:49.073Z
confidence: 1
data_availability: indeterminate, not_reconciled_to_attested_artifact, snapshot_date_unavailable
pipeline_version: 0236392
doi: —
license: MT-public-records
coverage_start: —
coverage_end: —
slsa_provenance_url: —
CO Medicaid
source: Colorado Department of Health Care Policy & Financing (HCPF)
dataset_id: co-hcpf-terminations
snapshot: —
methodology: v2026.05.0
last_checked: 2026-08-04T21:36:49.073Z
confidence: 1
data_availability: indeterminate, not_reconciled_to_attested_artifact, snapshot_date_unavailable
pipeline_version: 0236392
doi: —
license: CO-public-records
coverage_start: —
coverage_end: —
slsa_provenance_url: —
IN Medicaid
source: Indiana FSSA, Office of Medicaid Policy and Planning (OMPP)
dataset_id: in-ompp-terminations
snapshot: —
methodology: v2026.05.0
last_checked: 2026-08-04T21:36:49.073Z
confidence: 1
data_availability: indeterminate, not_reconciled_to_attested_artifact, snapshot_date_unavailable
pipeline_version: 0236392
doi: —
license: IN-public-records
coverage_start: —
coverage_end: —
slsa_provenance_url: —
KS Medicaid
source: Kansas Department of Health and Environment, Division of Health Care Finance (KDHE-DHCF)
dataset_id: ks-kmap-terminations
snapshot: —
methodology: v2026.05.0
last_checked: 2026-08-04T21:36:49.073Z
confidence: 1
data_availability: indeterminate, not_reconciled_to_attested_artifact, snapshot_date_unavailable
pipeline_version: 0236392
doi: —
license: KS-public-records
coverage_start: —
coverage_end: —
slsa_provenance_url: —
KY Medicaid
source: Kentucky CHFS, Department for Medicaid Services (DMS)
dataset_id: ky-dms-terminations
snapshot: —
methodology: v2026.05.0
last_checked: 2026-08-04T21:36:49.073Z
confidence: 1
data_availability: indeterminate, not_reconciled_to_attested_artifact, snapshot_date_unavailable
pipeline_version: 0236392
doi: —
license: KY-public-records
coverage_start: —
coverage_end: —
slsa_provenance_url: —
NH Medicaid
source: New Hampshire Department of Health and Human Services (DHHS)
dataset_id: nh-dhhs-sanctions
snapshot: —
methodology: v2026.05.0
last_checked: 2026-08-04T21:36:49.073Z
confidence: 1
data_availability: indeterminate, not_reconciled_to_attested_artifact, snapshot_date_unavailable
pipeline_version: 0236392
doi: —
license: NH-public-records
coverage_start: —
coverage_end: —
slsa_provenance_url: —
ND Medicaid
source: North Dakota Health and Human Services (HHS), Medicaid Program Integrity
dataset_id: nd-hhs-exclusions
snapshot: —
methodology: v2026.05.0
last_checked: 2026-08-04T21:36:49.073Z
confidence: 1
data_availability: indeterminate, not_reconciled_to_attested_artifact, snapshot_date_unavailable
pipeline_version: 0236392
doi: —
license: ND-public-records
coverage_start: —
coverage_end: —
slsa_provenance_url: —
TN Medicaid
source: Tennessee TennCare, Office of Program Integrity
dataset_id: tn-tenncare-terminated
snapshot: —
methodology: v2026.05.0
last_checked: 2026-08-04T21:36:49.073Z
confidence: 1
data_availability: indeterminate, not_reconciled_to_attested_artifact, snapshot_date_unavailable
pipeline_version: 0236392
doi: —
license: TN-public-records
coverage_start: —
coverage_end: —
slsa_provenance_url: —
MI Medicaid
source: Michigan Department of Health and Human Services (MDHHS), Medicaid Program Integrity
dataset_id: mi-mdhhs-sanctions
snapshot: —
methodology: v2026.05.0
last_checked: 2026-08-04T21:36:49.073Z
confidence: 1
data_availability: indeterminate, not_reconciled_to_attested_artifact, snapshot_date_unavailable
pipeline_version: 0236392
doi: —
license: MI-public-records
coverage_start: —
coverage_end: —
slsa_provenance_url: —
LA Medicaid
source: Louisiana Department of Health (LDH), Program Integrity
dataset_id: la-ldh-adverse-actions
snapshot: —
methodology: v2026.05.0
last_checked: 2026-08-04T21:36:49.073Z
confidence: 1
data_availability: indeterminate, not_reconciled_to_attested_artifact, snapshot_date_unavailable
pipeline_version: 0236392
doi: —
license: LA-public-records
coverage_start: —
coverage_end: —
slsa_provenance_url: —
SC Medicaid
source: South Carolina Department of Health and Human Services (SCDHHS), Program Integrity
dataset_id: sc-scdhhs-sanctioned
snapshot: —
methodology: v2026.05.0
last_checked: 2026-08-04T21:36:49.073Z
confidence: 1
data_availability: indeterminate, not_reconciled_to_attested_artifact, snapshot_date_unavailable
pipeline_version: 0236392
doi: —
license: SC-public-records
coverage_start: —
coverage_end: —
slsa_provenance_url: —
MA Medicaid
source: Massachusetts MassHealth (EOHHS), Office of Program Integrity
dataset_id: ma-masshealth-exclusions
snapshot: —
methodology: v2026.05.0
last_checked: 2026-08-04T21:36:49.073Z
confidence: 1
data_availability: indeterminate, not_reconciled_to_attested_artifact, snapshot_date_unavailable
pipeline_version: 0236392
doi: —
license: MA-public-records
coverage_start: —
coverage_end: —
slsa_provenance_url: —
MO Medicaid
source: Missouri Medicaid Audit and Compliance (MMAC), Department of Social Services
dataset_id: mo-mmac-sanctions
snapshot: —
methodology: v2026.05.0
last_checked: 2026-08-04T21:36:49.073Z
confidence: 1
data_availability: indeterminate, not_reconciled_to_attested_artifact, snapshot_date_unavailable
pipeline_version: 0236392
doi: —
license: MO-public-records
coverage_start: —
coverage_end: —
slsa_provenance_url: —
OIG CIA
source: HHS Office of Inspector General — Corporate Integrity Agreements
dataset_id: oig-cia
snapshot: —
methodology: v2026.05.0
last_checked: 2026-08-04T21:36:49.073Z
confidence: 1
data_availability: not_flagged, snapshot_date_unavailable
pipeline_version: 0236392
doi: —
license: US-Government-Works
coverage_start: —
coverage_end: —
slsa_provenance_url: —
CMS Penalties
source: Centers for Medicare & Medicaid Services (CMS) — Civil Money Penalties
dataset_id: cms-cmp
snapshot: —
methodology: v2026.05.0
last_checked: 2026-08-04T21:36:49.073Z
confidence: 1
data_availability: not_flagged, snapshot_date_unavailable
pipeline_version: 0236392
doi: —
license: US-Government-Works
coverage_start: —
coverage_end: —
slsa_provenance_url: —
Industry payments
On file11 CMS Open Payments records on file. Ask Fonteum for the largest payments and a cited total.
Source:CMS Open PaymentsChecked 2026-08-04
14-tuple provenance (1)
CMS Open Payments
source: CMS Open Payments (Sunshine Act physician payment disclosures)
dataset_id: cms-open-payments
snapshot: —
methodology: open-payments/v1
last_checked: 2026-08-04T21:36:49.073Z
confidence: 1
data_availability: present, snapshot_date_unavailable
pipeline_version: 0236392
doi: —
license: US-Government-Works
coverage_start: 2013-08-01
coverage_end: ongoing
slsa_provenance_url: —
Order & referring eligibility
On fileOn the CMS Order and Referring roster — eligible to order and refer in 5 of 5 Medicare benefit categories.
- Part B: Y
- DME: Y
- HHA: Y
- PMD: Y
- Hospice: Y
Source:CMS Order and ReferringChecked 2026-08-04
14-tuple provenance (1)
CMS Order and Referring
source: Centers for Medicare & Medicaid Services (CMS)
dataset_id: cms-order-referring
snapshot: 2026-06-12
methodology: cms-order-referring/v1
last_checked: 2026-08-04T21:36:49.073Z
confidence: 1
data_availability: present
pipeline_version: 0236392
doi: —
license: US-Government-Works
coverage_start: 2026-06-12
coverage_end: ongoing
slsa_provenance_url: —
Medicare opt-out
None on fileNo CMS Medicare opt-out affidavit on file for this NPI.
Source:CMS Opt Out AffidavitsChecked 2026-08-04
14-tuple provenance (1)
CMS Opt Out Affidavits
source: Centers for Medicare & Medicaid Services (CMS)
dataset_id: cms-opt-out-affidavits
snapshot: —
methodology: cms-opt-out/v1
last_checked: 2026-08-04T21:36:49.073Z
confidence: 1
data_availability: not_present, snapshot_date_unavailable
pipeline_version: 0236392
doi: —
license: US-Government-Works
coverage_start: 1998-01-01
coverage_end: ongoing
slsa_provenance_url: —
Revalidation
On file16 Medicare enrollment records on file.
- Due date: TBD upstream — not due within the ensuing six months.
Source:CMS Medicare Revalidation Due Date ListChecked 2026-08-04
14-tuple provenance (1)
CMS Medicare Revalidation Due Date List
source: Centers for Medicare & Medicaid Services (CMS)
dataset_id: cms-revalidation-due-dates
snapshot: —
methodology: v2026.05.0
last_checked: 2026-08-04T21:36:49.073Z
confidence: 1
data_availability: present, snapshot_date_unavailable
pipeline_version: 0236392
doi: —
license: US-Government-Works
coverage_start: 2011-03-25
coverage_end: ongoing
slsa_provenance_url: —
Point-in-time
Query retained claim coordinates under bitemporal-read/v1. Most facts have no superseded row; dates outside retained coverage may return no prior version, and diffs require both coordinates.
Pick a date to reconstruct, or two dates to diff. Equivalent JSON: /api/v1/history/{subject_type}/{subject_id}?at=… and …/diff?from=…&to=…