SIMON IZAGUIRRE

NPI 1891255881 · Neurology · Anthem

Provider Status Assessment

Verified Active

Strong multi-source corroboration of active practice across 8 carrier networks with confirmed Colorado DORA license.

Confidence: High

Evidence: 9476 items from 13 sources

Signals: 5 supporting · 0 opposing · 2 missing

Resolution: All evidence sources corroborate active practice. 5 supporting signals with no contradictions across 8 evaluated sources.

Data Source Signals

✓

NPPES

LONE TREE, 80124

Freshness: Unknown

✓

Network Status

Listed with 8 carriers

anthem_co — in_network (commercial)
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)
kpic_co — in_network (commercial)
kaiser_co — in_network (commercial)

✓

DORA License

Active

—

Medicare

Not enrolled in Medicare (PECOS)

✗

Care Compare

Address mismatch with NPPES

AURORA, 80012
DENVER, 80218
ENGLEWOOD, 80113
LONE TREE, 80124
THORNTON, 80229
WESTMINSTER, 80023
WHEAT RIDGE, 80033

—

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 LONE TREE

Colorado DORA License: License status: Active

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

Carrier Networks: Listed in 8 carrier networks

CMS Care Compare: Found in Care Compare with 7 locations

Medicare Billing: No Medicare billing records available

PECOS Enrollment: PECOS enrollment status unknown

Trust Evaluation

identity:0.75Strong

licensure:0.90Strong

activity:

Dimension Scores

Composite0.82

Identity0.75 — Moderate

Active NPI with specialty classification

Licensure0.90 — Strong

Active Colorado DORA license confirmed

Activity0.85 — Strong

Found in carrier FHIR directory

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

8 networks across 3 carriers

Strong network presence across 8 carrier networks with corroborating federal activity signals.

Anthem(1 network)

1 DOI 6C-3

Anthem Blue Cross Blue ShieldDOI 6C-3

View carrier →

UnitedHealthcare(5 networks)

1 DOI 6C-34 Federal TiC

UnitedHealthcare of ColoradoDOI 6C-3

View carrier →

UnitedHealthcare InsuranceFederal TiC

View carrier →

UnitedHealthcare ServicesFederal TiC

View carrier →

Related Investigations

All providers in Anthem Blue Cross Blue Shield networkView →All Neurology providers statewideView →All providers in LONE TREE 80124View →All providers classified as Verified ActiveView →

Known Addresses

NPPESLONE TREE, 80124

Care CompareAURORA, 80012

Care CompareDENVER, 80218

Care CompareENGLEWOOD, 80113

Care CompareLONE TREE, 80124

Care CompareTHORNTON, 80229

Care CompareWESTMINSTER, 80023

Care CompareWHEAT RIDGE, 80033

Evidence

9476 items across 26 assertions from 13 sources

Connected Records

Colorado License

Transferred to Compact Physician

DORA

Practice Address

DENVER, 80218

cms_care_compare, NPPES

Carrier Network Listing

Listed in 8 carrier networks

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

NPI Registration

Status: active

NPPES Deactivation

Order/Referring Eligibility

Record found

cms_order_refer

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 Shield9414 records ·weight 0.80 · Latest: Mar 14, 2026

Colorado License StatusTrust: 0.95

↓DORAweight 0.60 · Mar 13, 2026

Matched via: primary

Colorado License StatusTrust: 0.95

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

Matched via: primary

Colorado License StatusTrust: 0.95

↓DORA2 records ·weight 0.98 · Latest: Mar 13, 2026

Matched via: license_number

Colorado License StatusTrust: 0.95

↓

Timeline

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

Mar 13, 2026DORA license check: Transferred to Compact Physician

Mar 13, 2026DORA license check: Active

Mar 13, 2026DORA license check: Expired

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: 0.820

Strong multi-source corroboration of active practice across 8 carrier networks with confirmed Colorado DORA license.

UnitedHealthcare UMRFederal TiC

View carrier →

UnitedHealthcare SurestFederal TiC

View carrier →

Kaiser Permanente(2 networks)

2 DOI 6C-3

Kaiser Permanente Insurance CoDOI 6C-3

View carrier →

Kaiser PermanenteDOI 6C-3

View carrier →

Evidence

9476 items across 26 assertions from 13 sources

Connected Records

Colorado License

Transferred to Compact Physician

DORA

Practice Address

DENVER, 80218

cms_care_compare, NPPES

Carrier Network Listing

Listed in 8 carrier networks

NPI Registration

Status: active

NPPES Deactivation

Order/Referring Eligibility

Record found

cms_order_refer

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 Shield9414 records ·weight 0.80 · Latest: Mar 14, 2026

Colorado License StatusTrust: 0.95

↓DORAweight 0.60 · Mar 13, 2026

Matched via: primary

Colorado License StatusTrust: 0.95

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

Matched via: primary

Colorado License StatusTrust: 0.95

↓DORA2 records ·weight 0.98 · Latest: Mar 13, 2026

Matched via: license_number

Colorado License StatusTrust: 0.95

↓

Timeline

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

Mar 13, 2026DORA license check: Transferred to Compact Physician

Mar 13, 2026DORA license check: Active

Mar 13, 2026DORA license check: Expired

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 0.60 · 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 Services8 records ·weight 0.80 · Latest: Mar 12, 2026

Carrier Network ListingTrust: 0.80

↓TiC: UnitedHealthcare Insurance4 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)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

Colorado License StatusTrust: 0.95

↓DORA2 records ·weight 0.60 · Latest: Mar 6, 2026

Colorado License StatusTrust: 0.95

↓DORAweight 0.60 · 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

Carrier Network ListingTrust: 0.80

↓TiC: Kaiser Permanente Insurance Companyweight 0.80 · 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

Practice LocationTrust: 0.80

↓cms_care_compareweight 0.80 · Mar 6, 2026

Carrier Network ListingTrust: 0.80

↓TiC: Kaiser Permanenteweight 0.80 · Mar 5, 2026

entity_typeTrust: 0.85

↓NPPESweight 0.85 · Mar 5, 2026

Provider SpecialtyTrust: 0.85

↓NPPESweight 0.85 · Mar 5, 2026

Order/Referring Eligibility: record found

Mar 11, 2026Carrier listing: Kaiser Permanente Insurance Company

Mar 6, 2026Practice address: DENVER, 80218

Mar 6, 2026Practice address: LONE TREE, 80124

Mar 6, 2026Practice address: THORNTON, 80229

Mar 6, 2026Practice address: WHEAT RIDGE, 80033

Mar 6, 2026Practice address: AURORA, 80012

Mar 6, 2026Practice address: WESTMINSTER, 80023

Mar 6, 2026Practice address: ENGLEWOOD, 80113

Mar 5, 2026Carrier listing: Kaiser Permanente

Showing 20 of 23 evidence events.