ANNA SIHON

NPI 1417012659 · Clinical Social Worker · Anthem

Provider Status Assessment

Likely Active

Moderate evidence supports active practice with 6 carrier network listings and verified licensure.

Confidence: High

Evidence: 155 items from 12 sources

Signals: 6 supporting · 0 opposing

Resolution: Moderate evidence supports active practice across 6 sources. No contradictory signals detected.

Data Source Signals

✓

NPPES

DENVER, 80249

Freshness: Unknown

✓

Network Status

Listed with 7 carriers

anthem_co — in_network (commercial)
anthem_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)
kaiser_co — in_network (commercial)

✓

DORA License

Active

—

Medicare

Non-Medicare specialty

✗

Care Compare

Address mismatch with NPPES

CASTLE ROCK, 80104
FORT COLLINS, 80524
GREENWOOD VILLAGE, 80112

✓

PECOS Enrollment

Medicare enrolled

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

FHIR Directory: No active FHIR endpoint despite carrier listings

NPPES Registry: Active NPI, registered in DENVER

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

CMS Care Compare: Found in Care Compare with 3 locations

Trust Evaluation

identity:0.75Strong

licensure:0.90Strong

activity:

Dimension Scores

Composite0.73

Identity0.75 — Moderate

Active NPI with specialty classification

Licensure0.90 — Strong

Active Colorado DORA license confirmed

Activity0.50 — Moderate

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 “likely active”?

Moderate evidence supports active practice. All dimensions above 0.40 with evidence depth ≥ 4. Licensure verified.

Carrier Network Listings

6 networks across 4 carriers

Anthem(1 network)

1 DOI 6C-3

Anthem Blue Cross Blue ShieldDOI 6C-3

View carrier →

UnitedHealthcare(2 networks)

2 Federal TiC

UnitedHealthcare UMRFederal TiC

View carrier →

UnitedHealthcare SurestFederal TiC

View carrier →

Cigna(1 network)

1 DOI 6C-3

Related Investigations

All providers in Anthem Blue Cross Blue Shield networkView →All Clinical Social Worker providers statewideView →All providers in DENVER 80249View →All providers classified as Likely ActiveView →

Known Addresses

NPPESDENVER, 80249

Care CompareCASTLE ROCK, 80104

Care CompareFORT COLLINS, 80524

Care CompareGREENWOOD VILLAGE, 80112

Evidence

155 items across 22 assertions from 12 sources

Connected Records

Practice Address

DENVER, 80249

NPPES, cms_care_compare

Carrier Network Listing

Listed in 6 carrier networks

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

Colorado License

Active

DORA

NPI Registration

Status: active

NPPES Deactivation

Order/Referring Eligibility

Record found

cms_order_refer

Medicare Enrollment

Enrolled

PECOS

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 Shield102 records ·weight 0.80 · Latest: Mar 14, 2026

Carrier Network ListingTrust: 0.80

↓TiC: Anthem Blue Cross Blue Shieldweight 0.80 · Mar 14, 2026

Colorado License StatusTrust: 0.95

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

Matched via: other_name

Colorado License StatusTrust: 0.95

↓DORA2 records ·weight 0.80 · Latest: Mar 13, 2026

Matched via: other_name

Colorado License StatusTrust: 0.95

↓DORA

Timeline

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

Mar 13, 2026DORA license check: Active

Mar 13, 2026DORA license check: Cancelled

Mar 13, 2026DORA license check: Expired

Mar 12, 2026NPPES record: active

Mar 12, 2026Carrier listing: UnitedHealthcare (UMR)

Mar 11, 2026Carrier listing: UnitedHealthcare (Surest)

Mar 11, 2026Practice address: DENVER, 80249

Mar 11, 2026Practice address: LONE TREE, 80124

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.

Order/Referring eligible: Yes

reachability:0.60Moderate

System Determination

Likely Active

Composite score: 0.733

Moderate evidence supports active practice with 6 carrier network listings and verified licensure.

Kaiser Permanente(2 networks)

2 DOI 6C-3

Kaiser Permanente Insurance CoDOI 6C-3

View carrier →

Kaiser PermanenteDOI 6C-3

View carrier →

Evidence

155 items across 22 assertions from 12 sources

Connected Records

Practice Address

DENVER, 80249

NPPES, cms_care_compare

Carrier Network Listing

Listed in 6 carrier networks

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

Colorado License

Active

DORA

NPI Registration

Status: active

NPPES Deactivation

Order/Referring Eligibility

Record found

cms_order_refer

Medicare Enrollment

Enrolled

PECOS

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 Shield102 records ·weight 0.80 · Latest: Mar 14, 2026

Carrier Network ListingTrust: 0.80

↓TiC: Anthem Blue Cross Blue Shieldweight 0.80 · Mar 14, 2026

Colorado License StatusTrust: 0.95

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

Matched via: other_name

Colorado License StatusTrust: 0.95

↓DORA2 records ·weight 0.80 · Latest: Mar 13, 2026

Matched via: other_name

Colorado License StatusTrust: 0.95

↓DORA

Timeline

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

Mar 13, 2026DORA license check: Active

Mar 13, 2026DORA license check: Cancelled

Mar 13, 2026DORA license check: Expired

Mar 12, 2026NPPES record: active

Mar 12, 2026Carrier listing: UnitedHealthcare (UMR)

Mar 11, 2026Carrier listing: UnitedHealthcare (Surest)

Mar 11, 2026Practice address: DENVER, 80249

Mar 11, 2026Practice address: LONE TREE, 80124

Mar 11, 2026Order/Referring Eligibility: record found

Mar 11, 2026

weight 0.95 · Latest: Mar 13, 2026

Matched via: primary

Colorado License StatusTrust: 0.95

↓DORA2 records ·weight 0.95 · Latest: Mar 13, 2026

Matched via: primary

Colorado License StatusTrust: 0.95

↓DORAweight 0.60 · Mar 13, 2026

Matched via: other_name

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

Practice LocationTrust: 0.85

↓NPPES2 records ·weight 0.85 · Latest: Mar 11, 2026

Practice LocationTrust: 0.85

↓NPPES2 records ·weight 0.85 · Latest: Mar 11, 2026

Order/Referring EligibilityTrust: 0.95

↓cms_order_referweight 0.95 · Mar 11, 2026

Carrier Network ListingTrust: 0.80

↓TiC: Cigna7 records ·weight 0.80 · Latest: 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

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

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

Carrier listing: Cigna

Mar 11, 2026Medicare enrollment: Approved

Mar 11, 2026Carrier listing: Kaiser Permanente Insurance Company

Mar 6, 2026Practice address: CASTLE ROCK, 80104

Mar 6, 2026Practice address: GREENWOOD VILLAGE, 80112

Mar 6, 2026Practice address: FORT COLLINS, 80524

Mar 5, 2026Carrier listing: Kaiser Permanente

Mar 5, 2026Practice address: GREENWOOD VILLAGE, 80112

Mar 5, 2026entity_type: record found

Mar 5, 2026Provider Specialty: record found