GREGORY PARKER

NPI 1023541349 · Diagnostic Radiology · Uhc Colorado

Provider Status Assessment

Verified Active

Strong multi-source corroboration of active practice across 10 carrier networks with confirmed Colorado DORA license.

Confidence: High

Evidence: 5626 items from 16 sources

Signals: 6 supporting · 0 opposing · 1 missing

Resolution: All evidence sources corroborate active practice. 6 supporting signals with no contradictions across 8 evaluated sources.

Data Source Signals

✓

NPPES

LAKEWOOD, 80401

Freshness: Unknown

✓

Network Status

Listed with 10 carriers

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

✓

DORA License

Active

—

Medicare

Not enrolled in Medicare (PECOS)

392 beneficiaries

$28,232.56 total payment

Specialty: Diagnostic Radiology

✗

Care Compare

Address mismatch with NPPES

BRIGHTON, 80601
DENVER, 80206
DENVER, 80220
DILLON, 80435
EDWARDS, 81632

System Reasoning

Claim Under Evaluation

Provider is actively practicing and appropriately listed in carrier networks

Evidence Evaluated

FHIR Directory: No active FHIR endpoint despite carrier listings

NPPES Registry: Active NPI, registered in LAKEWOOD

Colorado DORA License: License status: Active

Medicare Billing: 1,138 services, 392 beneficiaries

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

Carrier Networks: Listed in 10 carrier networks

CMS Care Compare: Found in Care Compare with 6 locations

PECOS Enrollment: PECOS enrollment status unknown

Trust Evaluation

identity:0.75Strong

licensure:0.90Strong

activity:

Dimension Scores

Composite0.86

Identity0.75 — Moderate

Active NPI with specialty classification

Licensure0.90 — Strong

Active Colorado DORA license confirmed

Activity1.00 — Strong

Active Medicare billing confirmed

Reachability0.60 — Moderate

Single address source (NPPES)

Network1.00 — Strong

Listed in multiple carrier networks

Why is this provider classified as “verified active”?

Strong multi-source corroboration of active practice. All dimensions above 0.55 with evidence depth ≥ 5. Active license confirmed.

Carrier Network Listings

10 networks across 5 carriers

Strong network presence across 10 carrier networks with corroborating federal activity signals.

UnitedHealthcare(5 networks)

1 DOI 6C-34 Federal TiC

UnitedHealthcare of ColoradoDOI 6C-3

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UnitedHealthcare InsuranceFederal TiC

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UnitedHealthcare ServicesFederal TiC

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UnitedHealthcare UMRFederal TiC

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UnitedHealthcare SurestFederal TiC

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Related Investigations

All providers in UnitedHealthcare of Colorado networkView →All Diagnostic Radiology providers statewideView →All providers in LAKEWOOD 80401View →All providers classified as Verified ActiveView →

Known Addresses

NPPESLAKEWOOD, 80401

Care CompareBRIGHTON, 80601

Care CompareDENVER, 80206

Care CompareDENVER, 80220

Care CompareDILLON, 80435

Care CompareEDWARDS, 81632

Care CompareLAKEWOOD, 80401

Evidence

5626 items across 31 assertions from 16 sources

Connected Records

Colorado License

Cancelled

DORA

Practice Address

DENVER, 80206

cms_care_compare, NPPES

Carrier Network Listing

Listed in 10 carrier networks

TiC: Anthem Blue Cross Blue Shield, TiC: UnitedHealthcare Services, TiC: UnitedHealthcare Insurance, TiC: UnitedHealthcare (UMR), TiC: UnitedHealthcare Colorado, TiC: UnitedHealthcare (Surest), TiC: Cigna, TiC: Kaiser Permanente Insurance Company, TiC: Aetna, TiC: Kaiser Permanente

NPI Registration

Status: active

NPPES Deactivation

Order/Referring Eligibility

Record found

cms_order_refer

Medicare Billing

1,138 services

cms_medicare

entity_type

Record found

NPPES

Federal Exclusion Check

No exclusion found

OIG LEIE + SAM.gov

Evidence Lineage

Carrier Network ListingTrust: 0.80

↓TiC: Anthem Blue Cross Blue Shield5505 records ·weight 0.80 · Latest: Mar 8, 2026

Colorado License StatusTrust: 0.95

↓DORA3 records ·weight 0.60 · Latest: Mar 13, 2026

Matched via: primary

Colorado License StatusTrust: 0.95

↓DORA4 records ·weight 0.60 · Latest: Mar 6, 2026

Matched via: primary

Colorado License StatusTrust: 0.95

↓DORA3 records ·weight 0.60 · Latest: Mar 13, 2026

Matched via: primary

Colorado License StatusTrust: 0.95

Timeline

Mar 14, 2026Carrier listing: Anthem Blue Cross Blue Shield

Mar 13, 2026DORA license check: Cancelled

Mar 13, 2026DORA license check: Expired

Mar 13, 2026DORA license check: Active

Mar 12, 2026Carrier listing: UnitedHealthcare Services

Mar 12, 2026Carrier listing: UnitedHealthcare Insurance

Mar 12, 2026NPPES record: active

Mar 12, 2026Carrier listing: UnitedHealthcare (UMR)

Mar 12, 2026Carrier listing: UnitedHealthcare Colorado

Mar 11, 2026Carrier listing: UnitedHealthcare (Surest)

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.

—

PECOS Enrollment

No PECOS data

reachability:0.60Moderate

System Determination

Verified Active

Composite score: 0.858

Strong multi-source corroboration of active practice across 10 carrier networks with confirmed Colorado DORA license.

CignaDOI 6C-3

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Kaiser Permanente(2 networks)

2 DOI 6C-3

Kaiser Permanente Insurance CoDOI 6C-3

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Kaiser PermanenteDOI 6C-3

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Aetna(1 network)

1 DOI 6C-3

AetnaDOI 6C-3

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Anthem(1 network)

1 DOI 6C-3

Anthem Blue Cross Blue ShieldDOI 6C-3

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Evidence

5626 items across 31 assertions from 16 sources

Connected Records

Colorado License

Cancelled

DORA

Practice Address

DENVER, 80206

cms_care_compare, NPPES

Carrier Network Listing

Listed in 10 carrier networks

NPI Registration

Status: active

NPPES Deactivation

Order/Referring Eligibility

Record found

cms_order_refer

Medicare Billing

1,138 services

cms_medicare

entity_type

Record found

NPPES

Federal Exclusion Check

No exclusion found

OIG LEIE + SAM.gov

Evidence Lineage

Carrier Network ListingTrust: 0.80

↓TiC: Anthem Blue Cross Blue Shield5505 records ·weight 0.80 · Latest: Mar 8, 2026

Colorado License StatusTrust: 0.95

↓DORA3 records ·weight 0.60 · Latest: Mar 13, 2026

Matched via: primary

Colorado License StatusTrust: 0.95

↓DORA4 records ·weight 0.60 · Latest: Mar 6, 2026

Matched via: primary

Colorado License StatusTrust: 0.95

↓DORA3 records ·weight 0.60 · Latest: Mar 13, 2026

Matched via: primary

Colorado License StatusTrust: 0.95

Timeline

Mar 14, 2026Carrier listing: Anthem Blue Cross Blue Shield

Mar 13, 2026DORA license check: Cancelled

Mar 13, 2026DORA license check: Expired

Mar 13, 2026DORA license check: Active

Mar 12, 2026Carrier listing: UnitedHealthcare Services

Mar 12, 2026Carrier listing: UnitedHealthcare Insurance

Mar 12, 2026NPPES record: active

Mar 12, 2026Carrier listing: UnitedHealthcare (UMR)

Mar 12, 2026Carrier listing: UnitedHealthcare Colorado

Mar 11, 2026Carrier listing: UnitedHealthcare (Surest)

Mar 11, 2026

weight 0.98 · Latest: Mar 6, 2026

Matched via: license_number

Colorado License StatusTrust: 0.95

↓DORA3 records ·weight 0.60 · Latest: Mar 13, 2026

Matched via: primary

Colorado License StatusTrust: 0.95

↓DORA3 records ·weight 0.60 · Latest: Mar 13, 2026

Matched via: primary

Colorado License StatusTrust: 0.95

↓DORA3 records ·weight 0.60 · Latest: Mar 13, 2026

Matched via: primary

Colorado License StatusTrust: 0.95

↓DORAweight 0.98 · Mar 13, 2026

Matched via: license_number

Colorado License StatusTrust: 0.95

↓DORA3 records ·weight 0.60 · Latest: Mar 13, 2026

Matched via: primary

Colorado License StatusTrust: 0.95

↓DORA2 records ·weight 0.60 · Latest: Mar 13, 2026

Matched via: primary

Carrier Network ListingTrust: 0.80

↓TiC: UnitedHealthcare Services13 records ·weight 0.80 · Latest: Mar 12, 2026

Carrier Network ListingTrust: 0.80

↓TiC: UnitedHealthcare Insurance8 records ·weight 0.80 · Latest: Mar 12, 2026

NPI Registration StatusTrust: 0.90

↓NPPES Deactivationweight 0.85 · Mar 12, 2026

Carrier Network ListingTrust: 0.80

↓TiC: UnitedHealthcare (UMR)34 records ·weight 0.80 · Latest: Mar 12, 2026

Carrier Network ListingTrust: 0.80

↓TiC: UnitedHealthcare Colorado3 records ·weight 0.80 · Latest: Mar 12, 2026

Carrier Network ListingTrust: 0.80

↓TiC: UnitedHealthcare (Surest)6 records ·weight 0.80 · Latest: Mar 11, 2026

Order/Referring EligibilityTrust: 0.95

↓cms_order_referweight 0.95 · Mar 11, 2026

Carrier Network ListingTrust: 0.80

↓TiC: Cigna10 records ·weight 0.80 · Latest: Mar 11, 2026

Carrier Network ListingTrust: 0.80

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

Carrier Network ListingTrust: 0.80

↓TiC: Aetna3 records ·weight 0.80 · Latest: Mar 11, 2026

Practice LocationTrust: 0.80

↓cms_care_compareweight 0.80 · Mar 6, 2026

Practice LocationTrust: 0.85

↓cms_care_compareweight 0.80 · Mar 6, 2026

↓NPPESweight 0.85 · Mar 5, 2026

Practice LocationTrust: 0.80

↓cms_care_compareweight 0.80 · Mar 6, 2026

Practice LocationTrust: 0.80

↓cms_care_compareweight 0.80 · Mar 6, 2026

Practice LocationTrust: 0.80

↓cms_care_compareweight 0.80 · Mar 6, 2026

Practice LocationTrust: 0.80

↓cms_care_compareweight 0.80 · Mar 6, 2026

Medicare Billing ActivityTrust: 0.90

↓cms_medicareweight 0.95 · Mar 6, 2026

Carrier Network ListingTrust: 0.80

↓TiC: Kaiser Permanenteweight 0.80 · Mar 5, 2026

Provider SpecialtyTrust: 0.85

↓NPPESweight 0.85 · Mar 5, 2026

entity_typeTrust: 0.85

↓NPPESweight 0.85 · Mar 5, 2026

Order/Referring Eligibility: record found

Mar 11, 2026Carrier listing: Cigna

Mar 11, 2026Carrier listing: Kaiser Permanente Insurance Company

Mar 11, 2026Carrier listing: Aetna

Mar 6, 2026Practice address: DENVER, 80206

Mar 6, 2026Practice address: LAKEWOOD, 80401

Mar 6, 2026Practice address: DENVER, 80220

Mar 6, 2026Practice address: DILLON, 80435

Mar 6, 2026Practice address: EDWARDS, 81632

Mar 6, 2026Practice address: BRIGHTON, 80601

Showing 20 of 25 evidence events.