GARRET HOLST

NPI 1427634492 · Family Medicine · Anthem

Provider Status Assessment

Needs Review

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

Confidence: High

Evidence: 5328 items from 15 sources

Signals: 5 supporting · 0 opposing · 2 missing

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

Data Source Signals

✓

NPPES

BOULDER, 80303

Freshness: Aging (last updated 2024-09-27)

526 days since update

✓

Network Status

Listed with 10 carriers

anthem_co — in_network (commercial)
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)
uhc_rmhmo_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

WESTMINSTER, 80023

—

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 BOULDER (record aging)

Colorado DORA License: License status: Active

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 1 location

Medicare Billing: No Medicare billing records available

PECOS Enrollment: PECOS enrollment status unknown

Trust Evaluation

identity:0.75Strong

licensure:0.90Strong

activity:

Dimension Scores

Composite0.71

Identity0.75 — Moderate

Active NPI with specialty classification

Licensure0.90 — Strong

Active Colorado DORA license confirmed

Activity0.40 — Weak

No Medicare billing · No electronic endpoint · No PECOS enrollment

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

9 networks across 3 carriers

Anthem(1 network)

1 DOI 6C-3

Anthem Blue Cross Blue ShieldDOI 6C-3

View carrier →

UnitedHealthcare(6 networks)

2 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 Family Medicine providers statewideView →All providers in BOULDER 80303View →All providers classified as Needs ReviewView →

Known Addresses

NPPESBOULDER, 80303

Care CompareWESTMINSTER, 80023

Evidence

5328 items across 20 assertions from 15 sources

Connected Records

FHIR Directory Status

Not found in directory

FHIR: uhc

Practice Address

BOULDER, 80303

NPPES, cms_care_compare

Carrier Network Listing

Listed in 9 carrier networks

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

Colorado License

Active

DORA

Order/Referring Eligibility

Record found

cms_order_refer

NPI Registration

Status: active

NPPES

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 Shield5231 records ·weight 0.80 · Latest: Mar 14, 2026

Carrier Network ListingTrust: 0.80

↓TiC: Anthem Blue Cross Blue Shield9 records ·weight 0.80 · Latest: Mar 14, 2026

Colorado License StatusTrust: 0.95

↓DORA5 records ·weight 0.98 · Latest: Mar 6, 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

↓

Timeline

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

Mar 13, 2026DORA license check: Active

Mar 13, 2026DORA license check: Expired

Mar 13, 2026FHIR directory lookup: not found

Mar 12, 2026Carrier listing: UnitedHealthcare Services

Mar 12, 2026Carrier listing: UnitedHealthcare Insurance

Mar 12, 2026Carrier listing: UnitedHealthcare (UMR)

Mar 12, 2026Carrier listing: UnitedHealthcare Colorado

Mar 11, 2026Carrier listing: UnitedHealthcare (Surest)

Mar 11, 2026Carrier listing: UnitedHealthcare (Rocky Mountain HMO)

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: 0.708

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

UnitedHealthcare UMR

UnitedHealthcare SurestFederal TiC

View carrier →

UnitedHealthcare Rocky Mountain HMODOI 6C-3

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

5328 items across 20 assertions from 15 sources

Connected Records

FHIR Directory Status

Not found in directory

FHIR: uhc

Practice Address

BOULDER, 80303

NPPES, cms_care_compare

Carrier Network Listing

Listed in 9 carrier networks

Colorado License

Active

DORA

Order/Referring Eligibility

Record found

cms_order_refer

NPI Registration

Status: active

NPPES

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 Shield5231 records ·weight 0.80 · Latest: Mar 14, 2026

Carrier Network ListingTrust: 0.80

↓TiC: Anthem Blue Cross Blue Shield9 records ·weight 0.80 · Latest: Mar 14, 2026

Colorado License StatusTrust: 0.95

↓DORA5 records ·weight 0.98 · Latest: Mar 6, 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

↓

Timeline

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

Mar 13, 2026DORA license check: Active

Mar 13, 2026DORA license check: Expired

Mar 13, 2026FHIR directory lookup: not found

Mar 12, 2026Carrier listing: UnitedHealthcare Services

Mar 12, 2026Carrier listing: UnitedHealthcare Insurance

Mar 12, 2026Carrier listing: UnitedHealthcare (UMR)

Mar 12, 2026Carrier listing: UnitedHealthcare Colorado

Mar 11, 2026Carrier listing: UnitedHealthcare (Surest)

Mar 11, 2026Carrier listing: UnitedHealthcare (Rocky Mountain HMO)

Mar 11, 2026

weight 0.95 · 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 Services12 records ·weight 0.80 · Latest: Mar 12, 2026

Carrier Network ListingTrust: 0.80

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

Carrier Network ListingTrust: 0.80

↓TiC: UnitedHealthcare (UMR)33 records ·weight 0.80 · Latest: Mar 12, 2026

Carrier Network ListingTrust: 0.80

↓TiC: UnitedHealthcare Colorado4 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

Carrier Network ListingTrust: 0.80

↓TiC: UnitedHealthcare (Rocky Mountain HMO)3 records ·weight 0.80 · 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: Kaiser Permanente Insurance Companyweight 0.80 · Mar 11, 2026

NPI Registration StatusTrust: 0.90

↓NPPES2 records ·weight 0.70 · Latest: Mar 7, 2026

Practice LocationTrust: 0.85

↓cms_care_compareweight 0.80 · Mar 6, 2026

↓NPPESweight 0.85 · Mar 5, 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

Practice address: BOULDER, 80303

Mar 11, 2026Order/Referring Eligibility: record found

Mar 11, 2026Carrier listing: Kaiser Permanente Insurance Company

Mar 7, 2026NPPES record: active

Mar 6, 2026Practice address: WESTMINSTER, 80023

Mar 5, 2026Carrier listing: Kaiser Permanente

Mar 5, 2026Provider Specialty: record found

Mar 5, 2026Practice address: WESTMINSTER, 80023

Mar 5, 2026entity_type: record found