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 |
|---|---|---|---|---|---|---|
| npi | 1073571212 | nppes_providers | deterministic_pk | 1.000 | 2026-06-10 | evidencerecorded: 2026-06-10 methodology: entity-graph/v1 evidence: {"rule":"D-NPI","source_pk":"1073571212","entity_type_code":"2"} |
| pac_id | 0244322766 | pecos_providers | exact_npi_in_pecos | 1.000 | 2026-06-16 | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 evidence: {"npi":"1073571212","rule":"D-PECOS","enrlmt_id":"O20070828000686","pecos_asct_cntl_id":"0244322766"} |
| pecos_enrlmt_id | O20070828000686 | pecos_providers | exact_npi_in_pecos | 1.000 | 2026-06-16 | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 evidence: {"npi":"1073571212","rule":"D-PECOS","enrlmt_id":"O20070828000686"} |
Graph edges
One-hop relationships — ownership, chain membership, operation — each backed by a federal source row.
| Relationship | Entity | Confidence | Source table | Provenance |
|---|---|---|---|---|
| ← owns | EVAN L KOLB | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"34","association_date":"01/01/2010","percentage_ownership":5} evidence: {"rule":"D-OWNER","owner_pac":"0042247058","source_pk":54741,"type_owner":"I","enrollment_id":"O20070828000686","role_code_owner":"34","role_text_owner":"5% OR GREATER DIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":5,"enrollment_organization_name":"COMMUNITY CARE CENTER OF HAMMOND, LLC"} |
| ← owns | HIBERNIA WILLIAMS | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"34","association_date":"01/01/2010","percentage_ownership":5} evidence: {"rule":"D-OWNER","owner_pac":"0840286761","source_pk":54743,"type_owner":"I","enrollment_id":"O20070828000686","role_code_owner":"34","role_text_owner":"5% OR GREATER DIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":5,"enrollment_organization_name":"COMMUNITY CARE CENTER OF HAMMOND, LLC"} |
| ← owns | MONROE MANOR LIMITED PARTNERSHIP (MS) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"72","association_date":"01/01/2025","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"0840794772","source_pk":54745,"type_owner":"O","enrollment_id":"O20070828000686","role_code_owner":"72","role_text_owner":"ADP OF THE SNF","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"COMMUNITY CARE CENTER OF HAMMOND, LLC"} |
| ← owns | QSST TR FOR ALISON BEEBE SADLER DANOS AND HER DESCENDANTS (MS) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"35","association_date":"01/01/2010","percentage_ownership":14} evidence: {"rule":"D-OWNER","owner_pac":"1951539501","source_pk":54746,"type_owner":"O","enrollment_id":"O20070828000686","role_code_owner":"35","role_text_owner":"5% OR GREATER INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":14,"enrollment_organization_name":"COMMUNITY CARE CENTER OF HAMMOND, LLC"} |
| ← owns | NANCY D BEEBE | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"35","association_date":"01/01/2010","percentage_ownership":14} evidence: {"rule":"D-OWNER","owner_pac":"2264587955","source_pk":54748,"type_owner":"I","enrollment_id":"O20070828000686","role_code_owner":"35","role_text_owner":"5% OR GREATER INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":14,"enrollment_organization_name":"COMMUNITY CARE CENTER OF HAMMOND, LLC"} |
| ← owns | ACCOUNT MANAGEMENT SERVICES INC (MS) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"01/01/2010","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"3476503855","source_pk":54750,"type_owner":"O","enrollment_id":"O20070828000686","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"COMMUNITY CARE CENTER OF HAMMOND, LLC"} |
| ← owns | WINDHAM HOUSE OF HATTIESBURG LLC (MS) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"72","association_date":"01/01/2025","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"3476620246","source_pk":54752,"type_owner":"O","enrollment_id":"O20070828000686","role_code_owner":"72","role_text_owner":"ADP OF THE SNF","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"COMMUNITY CARE CENTER OF HAMMOND, LLC"} |
| ← owns | JOSEPH W SADLER | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"35","association_date":"01/01/2010","percentage_ownership":14} evidence: {"rule":"D-OWNER","owner_pac":"3779619440","source_pk":54753,"type_owner":"I","enrollment_id":"O20070828000686","role_code_owner":"35","role_text_owner":"5% OR GREATER INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":14,"enrollment_organization_name":"COMMUNITY CARE CENTER OF HAMMOND, LLC"} |
| ← owns | ELTON G BEEBE | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"35","association_date":"01/01/2010","percentage_ownership":14} evidence: {"rule":"D-OWNER","owner_pac":"4183667512","source_pk":54755,"type_owner":"I","enrollment_id":"O20070828000686","role_code_owner":"35","role_text_owner":"5% OR GREATER INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":14,"enrollment_organization_name":"COMMUNITY CARE CENTER OF HAMMOND, LLC"} |
| ← owns | SCOTT PICOU (LA) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"01/01/2025","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"4183936073","source_pk":54758,"type_owner":"I","enrollment_id":"O20070828000686","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"COMMUNITY CARE CENTER OF HAMMOND, LLC"} |
| ← owns | KYLE CAULFIELD (LA) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"11/08/2013","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"5597660035","source_pk":54760,"type_owner":"I","enrollment_id":"O20070828000686","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"COMMUNITY CARE CENTER OF HAMMOND, LLC"} |
| ← owns | VERDIN ENTERPRISES, LLC (LA) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"72","association_date":"11/01/2021","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"5799191953","source_pk":54762,"type_owner":"O","enrollment_id":"O20070828000686","role_code_owner":"72","role_text_owner":"ADP OF THE SNF","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"COMMUNITY CARE CENTER OF HAMMOND, LLC"} |
| ← owns | ARIA CARE MANAGEMENT LLC (IL) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"72","association_date":"08/01/2022","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"6002328549","source_pk":54763,"type_owner":"O","enrollment_id":"O20070828000686","role_code_owner":"72","role_text_owner":"ADP OF THE SNF","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"COMMUNITY CARE CENTER OF HAMMOND, LLC"} |
| ← owns | TONI H PARKINSON | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"40","association_date":"11/15/2015","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"6204147416","source_pk":54764,"type_owner":"I","enrollment_id":"O20070828000686","role_code_owner":"40","role_text_owner":"CORPORATE OFFICER","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"COMMUNITY CARE CENTER OF HAMMOND, LLC"} |
| ← owns | PROVIDER PROFESSIONAL SERVICES INC (MS) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"01/01/2010","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"6204348741","source_pk":54767,"type_owner":"O","enrollment_id":"O20070828000686","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"COMMUNITY CARE CENTER OF HAMMOND, LLC"} |
| ← owns | HAROLD J GAMBURG | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"34","association_date":"01/01/2010","percentage_ownership":5} evidence: {"rule":"D-OWNER","owner_pac":"6608978473","source_pk":54769,"type_owner":"I","enrollment_id":"O20070828000686","role_code_owner":"34","role_text_owner":"5% OR GREATER DIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":5,"enrollment_organization_name":"COMMUNITY CARE CENTER OF HAMMOND, LLC"} |
| ← owns | LENA HERITAGE LLC (MS) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"34","association_date":"01/01/2010","percentage_ownership":85} evidence: {"rule":"D-OWNER","owner_pac":"7113094988","source_pk":54771,"type_owner":"O","enrollment_id":"O20070828000686","role_code_owner":"34","role_text_owner":"5% OR GREATER DIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":85,"enrollment_organization_name":"COMMUNITY CARE CENTER OF HAMMOND, LLC"} |
| ← owns | ADMINISTRATIVE SYSTEMS INC (MS) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"01/01/2010","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"7113439654","source_pk":54774,"type_owner":"O","enrollment_id":"O20070828000686","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"COMMUNITY CARE CENTER OF HAMMOND, LLC"} |
| ← owns | DAVID W STALLARD | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"35","association_date":"01/01/2010","percentage_ownership":14} evidence: {"rule":"D-OWNER","owner_pac":"7214915511","source_pk":54776,"type_owner":"I","enrollment_id":"O20070828000686","role_code_owner":"35","role_text_owner":"5% OR GREATER INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":14,"enrollment_organization_name":"COMMUNITY CARE CENTER OF HAMMOND, LLC"} |
| ← owns | BOBBY L BEEBE | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"12/11/2021","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"7315925617","source_pk":54779,"type_owner":"I","enrollment_id":"O20070828000686","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"COMMUNITY CARE CENTER OF HAMMOND, LLC"} |
| ← owns | PROVIDENCE CARE LLC (LA) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"04/07/2020","percentage_ownership":0} evidence: {"rule":"D-OWNER","owner_pac":"7416994611","source_pk":54781,"type_owner":"O","enrollment_id":"O20070828000686","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":0,"enrollment_organization_name":"COMMUNITY CARE CENTER OF HAMMOND, LLC"} |
| ← owns | TRISTAR REHAB INC (FL) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"01/01/2024","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"7810409356","source_pk":54783,"type_owner":"O","enrollment_id":"O20070828000686","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"COMMUNITY CARE CENTER OF HAMMOND, LLC"} |
| ← owns | OWNER PAC 8022512946 | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"86","association_date":"01/01/2010","percentage_ownership":0.85} evidence: {"rule":"D-OWNER","owner_pac":"8022512946","source_pk":54785,"type_owner":"I","enrollment_id":"O20070828000686","role_code_owner":"86","role_text_owner":"INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":0.85,"enrollment_organization_name":"COMMUNITY CARE CENTER OF HAMMOND, LLC"} |
| ← owns | ALISSA SMITH | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"04/06/2023","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"8022512953","source_pk":54786,"type_owner":"I","enrollment_id":"O20070828000686","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"COMMUNITY CARE CENTER OF HAMMOND, LLC"} |
| ← owns | HUNTER SMITH | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"04/01/2021","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"8123400363","source_pk":54787,"type_owner":"I","enrollment_id":"O20070828000686","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"COMMUNITY CARE CENTER OF HAMMOND, LLC"} |
| ← owns | PATHWAY SOUTH LLC (MS) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"01/01/2013","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"8224271390","source_pk":54789,"type_owner":"O","enrollment_id":"O20070828000686","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"COMMUNITY CARE CENTER OF HAMMOND, LLC"} |
| ← owns | QSST TR FOR FELICIA BEEBE STALLARD AND HER DESCENDANTS (MS) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"35","association_date":"01/01/2010","percentage_ownership":14} evidence: {"rule":"D-OWNER","owner_pac":"9133357783","source_pk":54791,"type_owner":"O","enrollment_id":"O20070828000686","role_code_owner":"35","role_text_owner":"5% OR GREATER INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":14,"enrollment_organization_name":"COMMUNITY CARE CENTER OF HAMMOND, LLC"} |
| ← owns | ELTON G BEEBE SR IRREVOCABLE FAMILY MORTAGE TRUST (MS) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"72","association_date":"01/01/2025","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"9537182175","source_pk":54793,"type_owner":"O","enrollment_id":"O20070828000686","role_code_owner":"72","role_text_owner":"ADP OF THE SNF","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"COMMUNITY CARE CENTER OF HAMMOND, LLC"} |
| ← owns | PHARMACEUTICAL CONSULTING SERVICES OF AMERICA LLC (LA) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"72","association_date":"08/16/2010","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"9739691270","source_pk":54794,"type_owner":"O","enrollment_id":"O20070828000686","role_code_owner":"72","role_text_owner":"ADP OF THE SNF","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"COMMUNITY CARE CENTER OF HAMMOND, LLC"} |
| ← owns | LTC HIM CONSULTING INC (LA) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"72","association_date":"12/11/2006","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"9830601376","source_pk":54795,"type_owner":"O","enrollment_id":"O20070828000686","role_code_owner":"72","role_text_owner":"ADP OF THE SNF","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"COMMUNITY CARE CENTER OF HAMMOND, LLC"} |
Current record
Current claims returned for this entity, grouped by provenance subject. The table exposes the source identifier recorded for each claim.
org · 1073571212 JSON
| Metric | Value | Asserted | Source |
|---|---|---|---|
| dba_name | <UNAVAIL> | 2026-06-10 | Centers for Medicare & Medicaid ServicesNPPES NPI Registry (individuals) 202602 publisher: Centers for Medicare & Medicaid Services retrieved: 2026-06-10 sha256: 8b5267e250fd4df6… claim API: JSON |
| enumeration_date | 2006-05-03 | 2026-06-10 | Centers for Medicare & Medicaid ServicesNPPES NPI Registry (individuals) 202602 publisher: Centers for Medicare & Medicaid Services retrieved: 2026-06-10 sha256: 8b5267e250fd4df6… claim API: JSON |
| legal_business_name | COMMUNITY CARE CENTER OF HAMMOND LLC | 2026-06-10 | Centers for Medicare & Medicaid ServicesNPPES NPI Registry (individuals) 202602 publisher: Centers for Medicare & Medicaid Services retrieved: 2026-06-10 sha256: 8b5267e250fd4df6… claim API: JSON |
| practice_state | LA | 2026-06-10 | Centers for Medicare & Medicaid ServicesNPPES NPI Registry (individuals) 202602 publisher: Centers for Medicare & Medicaid Services retrieved: 2026-06-10 sha256: 8b5267e250fd4df6… claim API: JSON |
| primary_taxonomy | 314000000X | 2026-06-10 | Centers for Medicare & Medicaid ServicesNPPES NPI Registry (individuals) 202602 publisher: Centers for Medicare & Medicaid Services retrieved: 2026-06-10 sha256: 8b5267e250fd4df6… claim API: JSON |
Provider screening signals
NPI-keyed source families read directly for 1073571212: 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.
14-tuple provenance (26)
Industry payments
None on file0 CMS Open Payments records on file for this NPI.
14-tuple provenance (1)
Order & referring eligibility
None on fileNo CMS Order and Referring record on file for this NPI.
14-tuple provenance (1)
Medicare opt-out
None on fileNo CMS Medicare opt-out affidavit on file for this NPI.
14-tuple provenance (1)
Revalidation
On file1 Medicare enrollment record on file.
- Due date: TBD upstream — not due within the ensuing six months.
14-tuple provenance (1)
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=…