What is Marty Mertens's specialty?

Marty Mertens (NPI 1558555896) is a Medicare-billing provider whose primary specialty is Rheumatology in Woodbury, MN.

Where does Marty Mertens practice?

Marty Mertens practices in Woodbury, MN, based on the location reported in the CMS Medicare provider datasets for NPI 1558555896.

How much does Medicare pay Marty Mertens?

Marty Mertens (NPI 1558555896) received approximately $225K in total Medicare Part B payments, serving 206 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1558555896

Marty MertensM.D.

PRACTICEINFINITE HEALTH COLLABORATIVE, PASee all providers at this practice →

RheumatologyWoodbury, MNI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

871

Unique beneficiaries

—

Total services

2,772

Distinct HCPCS

Medicare payment

$73K

Peer benchmark

Total Medicare services vs. 93 Rheumatology providers in MN — above median (cohort median 3,098).

PRESCRIBING · PART D · 2024

Total Rx claims

1,942

Beneficiaries

—

Total drug cost

$1.4M

Distinct drugs

Brand share

28.6%

Top prescribed drugs

Prednisone357 claims

Methotrexate Sodium349 claims

Hydroxychloroquine Sulfate313 claims

Leucovorin Calcium117 claims

Leflunomide104 claims

QUALITY · MIPS · 2024

Final MIPS score

91.8

Quality

95.1

Cost

81.7

Improvement activities

40.0

Promoting interop.

0.0

Payment adjustment

0.71%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Marty Mertens'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). 2 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Group Health Plan Inc. Clinical Laboratory · Eden Prairie, MN	113	825
Sou-Pan Wu Rheumatology · Woodbury, MN	20	53

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