MARTHA MERRILL-HALL

NPI 1164411906 · Clinical Nurse Specialist · Anthem

Provider Status Assessment

Needs Review

Carrier listings present but Colorado DORA license appears expired or revoked.

Confidence: High

Evidence: 5366 items from 10 sources

Signals: 4 supporting · 1 opposing · 1 missing

Resolution: Carrier listings present but Colorado DORA license appears expired or revoked. Licensure concern outweighs network presence.

Data Source Signals

✓

NPPES

DENVER, 80218

Freshness: Unknown

✓

Network Status

Listed with 6 carriers

anthem_co — in_network (commercial)
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)

✗

DORA License

Expired

✗

Medicare

Enrolled but no billing activity

—

Care Compare

No Care Compare data

✓

PECOS Enrollment

Medicare enrolled

System Reasoning

Claim Under Evaluation

Provider is actively practicing and appropriately listed in carrier networks

Evidence Evaluated

Colorado DORA License: License status: Expired

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

PECOS Enrollment: Medicare enrollment confirmed

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

Carrier Networks: Listed in 6 carrier networks

CMS Care Compare: Not found in CMS Care Compare

Trust Evaluation

identity:0.75Strong

licensure:0.20Critical

activity:

Dimension Scores

Composite0.57

Identity0.75 — Moderate

Active NPI with specialty classification

Licensure0.20 — Critical

DORA license expired or revoked

Activity0.40 — 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

6 networks across 2 carriers

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 ServicesFederal TiC

View carrier →

UnitedHealthcare of ColoradoDOI 6C-3

View carrier →

UnitedHealthcare InsuranceFederal TiC

View carrier →

Related Investigations

All providers in Anthem Blue Cross Blue Shield networkView →All Clinical Nurse Specialist providers statewideView →All providers in DENVER 80218View →All providers classified as Needs ReviewView →

Known Addresses

NPPESDENVER, 80218

Evidence

5366 items across 14 assertions from 10 sources

Connected Records

Colorado License

Expired

DORA

Practice Address

DENVER, 80218

NPPES

Carrier Network Listing

Listed in 6 carrier networks

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

NPI Registration

Status: active

NPPES Deactivation

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 Shield5295 records ·weight 0.80 · Latest: Mar 14, 2026

Colorado License StatusTrust: 0.95

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

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

Matched via: primary

Carrier Network ListingTrust: 0.80

Timeline

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

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, 2026Medicare enrollment: Approved

Mar 5, 2026entity_type: record found

Mar 5, 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.

Evidence

5366 items across 14 assertions from 10 sources

Connected Records

Colorado License

Expired

DORA

Practice Address

DENVER, 80218

NPPES

Carrier Network Listing

Listed in 6 carrier networks

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

NPI Registration

Status: active

NPPES Deactivation

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 Shield5295 records ·weight 0.80 · Latest: Mar 14, 2026

Colorado License StatusTrust: 0.95

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

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

Matched via: primary

Carrier Network ListingTrust: 0.80

Timeline

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

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, 2026Medicare enrollment: Approved

Mar 5, 2026entity_type: record found

Mar 5, 2026