What is Nicolaj Andersen's specialty?

Nicolaj Andersen (NPI 1659455640) is a Medicare-billing provider whose primary specialty is Hematology-Oncology in Santa Rosa, CA.

Where does Nicolaj Andersen practice?

Nicolaj Andersen practices in Santa Rosa, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1659455640.

How much does Medicare pay Nicolaj Andersen?

Medicare Part B utilization, prescribing (Part D), MIPS quality scores, and industry payments for Nicolaj Andersen (NPI 1659455640) are detailed on this CareTrace profile.

PROVIDER PROFILE · NPI 1659455640

Nicolaj Andersen

PRACTICEKAISER FOUNDATION HOSPITALSSee all providers at this practice →

Hematology-OncologySanta Rosa, CAI

MEDICARE UTILIZATION · PART B · 2024

No data available for this provider in 2024.

PRESCRIBING · PART D · 2024

Total Rx claims

1,858

Beneficiaries

—

Total drug cost

$9.2M

Distinct drugs

Brand share

46.9%

Top prescribed drugs

Abiraterone Acetate180 claims

Zanubrutinib165 claims

Prednisone108 claims

Lenalidomide107 claims

Dexamethasone86 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Nicolaj Andersen's patients come from & go

Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 1 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
KAISER FOUNDATION HOSPITALS	12	44

Refers patients to

Outbound — where patients go next

No outbound pairs above the suppression threshold.

Source: CMS Physician Shared Patient Patterns (30-day window, Medicare FFS). Direction = a beneficiary seen by the first provider, then the second, within 30 days; a proxy for referral, not a documented referral. Pairs with fewer than 11 shared beneficiaries are suppressed.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history

Healthparse Signals

Monitor this provider for changes — dated NPI change events