WILLIAM VAN EIMEREN

NPI 1447237219 · Family Medicine · Uhc Services

Provider Status Assessment

Needs Review

Evidence across dimensions is contradictory — supporting and opposing signals are present.

Confidence: High

Evidence: 59 items from 14 sources

Signals: 6 supporting · 0 opposing · 1 missing

Resolution: Mixed signals across dimensions prevent confident classification. Manual review recommended.

Data Source Signals

✗

NPPES

WESTMINSTER, 80031

Freshness: Stale (last updated 2021-05-19)

1,753 days since update

✓

Network Status

Listed with 7 carriers

uhc_services_co — in_network (commercial)
uhc_colorado_co — in_network (commercial)
uhc_insurance_co — in_network (commercial)
uhc_umr_co — in_network (commercial)
uhc_surest_co — in_network (commercial)
kpic_co — in_network (commercial)
kaiser_co — in_network (commercial)

✓

DORA License

Active

✗

Medicare

Enrolled but no billing activity

—

Care Compare

No Care Compare data

✓

PECOS Enrollment

Medicare enrolled

Order/Referring eligible: Yes

System Reasoning

Claim Under Evaluation

Provider is actively practicing and appropriately listed in carrier networks

Evidence Evaluated

Medicare Billing: Enrolled in Medicare but no recent billing data

NPPES Registry: Active NPI, registered in WESTMINSTER (record aging)

Colorado DORA License: License status: Active

PECOS Enrollment: Medicare enrollment confirmed

Federal Exclusion Check: No federal exclusions found (OIG LEIE, SAM.gov)

Carrier Networks: Listed in 7 carrier networks

FHIR Directory: Active endpoint in carrier FHIR directory

CMS Care Compare: Not found in CMS Care Compare

Trust Evaluation

identity:0.75Strong

licensure:0.90Strong

activity:

Dimension Scores

Composite0.72

Identity0.75 — Moderate

Active NPI with specialty classification

Licensure0.90 — Strong

Active Colorado DORA license confirmed

Activity0.45 — Weak

No Medicare billing · No electronic endpoint

Reachability0.60 — Moderate

Single address source (NPPES)

Network1.00 — Strong

Listed in multiple carrier networks

Why is this provider classified as “needs review”?

Evidence across dimensions is contradictory or specific concerns exist (unverified license, FHIR directory contradiction). Manual review recommended.

Carrier Network Listings

7 networks across 2 carriers

UnitedHealthcare(5 networks)

1 DOI 6C-34 Federal TiC

UnitedHealthcare ServicesFederal TiC

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UnitedHealthcare of ColoradoDOI 6C-3

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UnitedHealthcare InsuranceFederal TiC

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UnitedHealthcare UMRFederal TiC

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UnitedHealthcare SurestFederal TiC

View carrier →

Kaiser Permanente

Related Investigations

All providers in UnitedHealthcare Services networkView →All Family Medicine providers statewideView →All providers in WESTMINSTER 80031View →All providers classified as Needs ReviewView →

Known Addresses

NPPESWESTMINSTER, 80031

Evidence

59 items across 20 assertions from 14 sources

Connected Records

Colorado License

Expired

DORA

FHIR Directory Status

Not found in directory

FHIR: uhc

Practice Address

WESTMINSTER, 80031

NPPES

Carrier Network Listing

Listed in 7 carrier networks

TiC: UnitedHealthcare Services, TiC: UnitedHealthcare Insurance, TiC: UnitedHealthcare (UMR), TiC: UnitedHealthcare Colorado, TiC: UnitedHealthcare (Surest), TiC: Kaiser Permanente Insurance Company, TiC: Kaiser Permanente

Electronic Endpoint

Record found

nppes_endpoint

Order/Referring Eligibility

Record found

cms_order_refer

Medicare Enrollment

Enrolled

PECOS

NPI Registration

Status: active

NPPES

entity_type

Record found

NPPES

Federal Exclusion Check

No exclusion found

OIG LEIE + SAM.gov

Evidence Lineage

Colorado License StatusTrust: 0.95

↓DORA4 records ·weight 0.98 · Latest: Mar 6, 2026

Matched via: license_number

Colorado License StatusTrust: 0.95

↓DORA5 records ·weight 0.98 · Latest: Mar 13, 2026

Matched via: license_number

Colorado License StatusTrust: 0.95

↓DORAweight 0.98 · Mar 13, 2026

Matched via: license_number

Colorado License StatusTrust: 0.95

↓DORAweight 0.98 · Mar 13, 2026

Matched via: license_number

Colorado License StatusTrust: 0.95

↓DORA

Timeline

Mar 13, 2026DORA license check: Expired

Mar 13, 2026DORA license check: Active

Mar 13, 2026FHIR directory lookup: not found

Mar 12, 2026Carrier listing: UnitedHealthcare Services

Mar 12, 2026Carrier listing: UnitedHealthcare Insurance

Mar 12, 2026Electronic Endpoint: record found

Mar 12, 2026Carrier listing: UnitedHealthcare (UMR)

Mar 12, 2026Carrier listing: UnitedHealthcare Colorado

Mar 11, 2026Carrier listing: UnitedHealthcare (Surest)

Mar 11, 2026Order/Referring Eligibility: record found

Mar 11, 2026

Evidence

Loading evidence lineage...

Disclaimer: This analysis uses publicly available federal and state data sources. It does not constitute a determination of provider status or network participation. Contact the provider or health plan directly to verify current status.

reachability:0.60Moderate

System Determination

Needs Review

Composite score: 0.720

Evidence across dimensions is contradictory — supporting and opposing signals are present.

Kaiser Permanente Insurance CoDOI 6C-3

View carrier →

Kaiser PermanenteDOI 6C-3

View carrier →

Evidence

59 items across 20 assertions from 14 sources

Connected Records

Colorado License

Expired

DORA

FHIR Directory Status

Not found in directory

FHIR: uhc

Practice Address

WESTMINSTER, 80031

NPPES

Carrier Network Listing

Listed in 7 carrier networks

Electronic Endpoint

Record found

nppes_endpoint

Order/Referring Eligibility

Record found

cms_order_refer

Medicare Enrollment

Enrolled

PECOS

NPI Registration

Status: active

NPPES

entity_type

Record found

NPPES

Federal Exclusion Check

No exclusion found

OIG LEIE + SAM.gov

Evidence Lineage

Colorado License StatusTrust: 0.95

↓DORA4 records ·weight 0.98 · Latest: Mar 6, 2026

Matched via: license_number

Colorado License StatusTrust: 0.95

↓DORA5 records ·weight 0.98 · Latest: Mar 13, 2026

Matched via: license_number

Colorado License StatusTrust: 0.95

↓DORAweight 0.98 · Mar 13, 2026

Matched via: license_number

Colorado License StatusTrust: 0.95

↓DORAweight 0.98 · Mar 13, 2026

Matched via: license_number

Colorado License StatusTrust: 0.95

↓DORA

Timeline

Mar 13, 2026DORA license check: Expired

Mar 13, 2026DORA license check: Active

Mar 13, 2026FHIR directory lookup: not found

Mar 12, 2026Carrier listing: UnitedHealthcare Services

Mar 12, 2026Carrier listing: UnitedHealthcare Insurance

Mar 12, 2026Electronic Endpoint: record found

Mar 12, 2026Carrier listing: UnitedHealthcare (UMR)

Mar 12, 2026Carrier listing: UnitedHealthcare Colorado

Mar 11, 2026Carrier listing: UnitedHealthcare (Surest)

Mar 11, 2026Order/Referring Eligibility: record found

Mar 11, 2026

weight 0.60 · Latest: Mar 13, 2026

Matched via: primary

FHIR Directory StatusTrust: 0.90

↓FHIR: uhc2 records ·weight 0.90 · Latest: Mar 13, 2026

Carrier Network ListingTrust: 0.80

↓TiC: UnitedHealthcare Services7 records ·weight 0.80 · Latest: Mar 12, 2026

Carrier Network ListingTrust: 0.80

↓TiC: UnitedHealthcare Insurance4 records ·weight 0.80 · Latest: Mar 12, 2026

Electronic EndpointTrust: 0.85

↓nppes_endpointweight 0.85 · Mar 12, 2026

Carrier Network ListingTrust: 0.80

↓TiC: UnitedHealthcare (UMR)17 records ·weight 0.80 · Latest: Mar 12, 2026

Carrier Network ListingTrust: 0.80

↓TiC: UnitedHealthcare Colorado2 records ·weight 0.80 · Latest: Mar 12, 2026

Carrier Network ListingTrust: 0.80

↓TiC: UnitedHealthcare (Surest)3 records ·weight 0.80 · Latest: Mar 11, 2026

Order/Referring EligibilityTrust: 0.95

↓cms_order_referweight 0.95 · Mar 11, 2026

Medicare EnrollmentTrust: 0.95

↓PECOSweight 0.95 · Mar 11, 2026

Carrier Network ListingTrust: 0.80

↓TiC: Kaiser Permanente Insurance Companyweight 0.80 · Mar 11, 2026

NPI Registration StatusTrust: 0.90

↓NPPES2 records ·weight 0.40 · Latest: Mar 7, 2026

Carrier Network ListingTrust: 0.80

↓TiC: Kaiser Permanenteweight 0.80 · Mar 5, 2026

Provider SpecialtyTrust: 0.85

↓NPPESweight 0.85 · Mar 5, 2026

Practice LocationTrust: 0.85

↓NPPESweight 0.85 · Mar 5, 2026

entity_typeTrust: 0.85

↓NPPESweight 0.85 · Mar 5, 2026

Medicare enrollment: Approved

Mar 11, 2026Carrier listing: Kaiser Permanente Insurance Company

Mar 7, 2026NPPES record: active

Mar 5, 2026Carrier listing: Kaiser Permanente

Mar 5, 2026Provider Specialty: record found

Mar 5, 2026Practice address: WESTMINSTER, 80031

Mar 5, 2026entity_type: record found