What is Margaret Guerriero's specialty?

Margaret Guerriero (NPI 1235446956) is a Medicare-billing provider whose primary specialty is Nurse Practitioner in Seattle, WA.

Where does Margaret Guerriero practice?

Margaret Guerriero practices in Seattle, WA, based on the location reported in the CMS Medicare provider datasets for NPI 1235446956.

How much does Medicare pay Margaret Guerriero?

Margaret Guerriero (NPI 1235446956) received approximately $7K in total Medicare Part B payments, serving 72 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1235446956

Margaret GuerrieroRN, ARNP

Nurse PractitionerSeattle, WAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

Unique beneficiaries

—

Total services

Distinct HCPCS

Medicare payment

$5K

Peer benchmark

Total Medicare services vs. 3,734 Nurse Practitioner providers in WA — below median (cohort median 228).

PRESCRIBING · PART D · 2024

Total Rx claims

198

Beneficiaries

—

Total drug cost

$31K

Distinct drugs

Brand share

53.0%

Top prescribed drugs

Montelukast Sodium35 claims

Fluticasone Propion/Salmeterol34 claims

Budesonide/Formoterol Fumarate24 claims

Azithromycin22 claims

Fluticasone Furoate20 claims

QUALITY · MIPS · 2024

Final MIPS score

93.8

Quality

74.6

Cost

0.0

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.79%

APM Entity

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (2)

CCN 500008

Hospital

CCN 500138

Hospital

REFERRAL NETWORK

Where Margaret Guerriero'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 · 6 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
FRED HUTCHINSON CANCER CENTER	74	657
UNIVERSITY OF WASHINGTON	29	175
Renato Martins Medical Oncology · Seattle, WA	25	476
GOULART, BERNARDO	13	108

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
FRED HUTCHINSON CANCER CENTER	58	462
Renato Martins Medical Oncology · Seattle, WA	41	591
UNIVERSITY OF WASHINGTON	32	207
STERN, ERIC	15	26
Sudhakar Pipavath Diagnostic Radiology · Seattle, WA	13	24
GOULART, BERNARDO	12	81

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