What is Mark Nielsen's specialty?

Mark Nielsen (NPI 1609830843) is a Medicare-billing provider whose primary specialty is Internal Medicine in Bloomington, MN.

Where does Mark Nielsen practice?

Mark Nielsen practices in Bloomington, MN, based on the location reported in the CMS Medicare provider datasets for NPI 1609830843.

How much does Medicare pay Mark Nielsen?

Mark Nielsen (NPI 1609830843) received approximately $87K in total Medicare Part B payments, serving 276 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1609830843

Mark NielsenMD

PRACTICEFAIRVIEW CLINICSSee all providers at this practice →

Internal MedicineBloomington, MNI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,836

Unique beneficiaries

—

Total services

2,215

Distinct HCPCS

Medicare payment

$78K

Peer benchmark

Total Medicare services vs. 1,849 Internal Medicine providers in MN — top quintile (cohort median 405).

PRESCRIBING · PART D · 2024

Total Rx claims

8,838

Beneficiaries

—

Total drug cost

$480K

Distinct drugs

110

Brand share

16.3%

Top prescribed drugs

Lisinopril731 claims

Atorvastatin Calcium693 claims

Amlodipine Besylate562 claims

Simvastatin562 claims

Levothyroxine Sodium412 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 Mark Nielsen'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). 10 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
FAIRVIEW HEALTH SERVICES	69	362
FAIRVIEW HOME CARE AND HOSPICE	33	77
Mark Nelson Family Practice · Bloomington, MN	22	91
Allina Health System Ambulance Service Provider · Saint Paul, MN	19	63
Steven Thiel Diagnostic Radiology · Roseville, MN	18	32
FAIRVIEW HEALTH SERVICES	17	31
Michelle Hopman Physician Assistant · Bloomington, MN	17	64
Franklin Liu Diagnostic Radiology · Saint Paul, MN	15	28
John Colford Diagnostic Radiology · Grand Rapids, MI	13	26
Hennepin Healthcare System, Inc Opioid Treatment Program · Minneapolis, MN	13	30

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