What is Marissa Niemi's specialty?

Marissa Niemi (NPI 1235417734) is a Medicare-billing provider whose primary specialty is Physician Assistant in Erie, PA.

Where does Marissa Niemi practice?

Marissa Niemi practices in Erie, PA, based on the location reported in the CMS Medicare provider datasets for NPI 1235417734.

How much does Medicare pay Marissa Niemi?

Medicare Part B utilization, prescribing (Part D), MIPS quality scores, and industry payments for Marissa Niemi (NPI 1235417734) are detailed on this CareTrace profile.

PROVIDER PROFILE · NPI 1235417734

Marissa Niemi

Physician AssistantErie, PAI

MEDICARE UTILIZATION · PART B · 2024

No data available for this provider in 2024.

PRESCRIBING · PART D · 2024

Total Rx claims

6,074

Beneficiaries

—

Total drug cost

$1.6M

Distinct drugs

Brand share

29.9%

Top prescribed drugs

Metoprolol Succinate677 claims

Sacubitril/Valsartan641 claims

Spironolactone579 claims

Empagliflozin494 claims

Furosemide407 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$63

Payment records

By payment type

Food and Beverage$63

Top paying entities

Food and Beverage$63

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (5)

Hospital

Hospital

Hospital

Hospital

Hospital

REFERRAL NETWORK

Where Marissa Niemi'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). 4 inbound referrers · 7 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Associated Clinical Laboratories Clinical Laboratory · Erie, PA	36	114
UPMC HAMOT	30	51
David Strasser Cardiology · Erie, PA	20	37
Kelly Hayes Cardiology · Erie, PA	12	27

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
UPMC HAMOT	54	119
Associated Clinical Laboratories Clinical Laboratory · Erie, PA	33	128
Paul Demjanenko Cardiology · Erie, PA	22	51
David Strasser Cardiology · Erie, PA	19	42
NPI 1518962976	15	22
Kelly Hayes Cardiology · Erie, PA	12	18
Jean Moubarak Cardiology · Erie, PA	12	19

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