What is Catherine O'brien's specialty?

Catherine O'brien (NPI 1235521758) is a Medicare-billing provider whose primary specialty is Certified Registered Nurse Anesthetist (CRNA) in Springfield, MA.

Where does Catherine O'brien practice?

Catherine O'brien practices in Springfield, MA, based on the location reported in the CMS Medicare provider datasets for NPI 1235521758.

How much does Medicare pay Catherine O'brien?

Catherine O'brien (NPI 1235521758) received approximately $17K in total Medicare Part B payments, serving 177 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1235521758

Catherine O'brienCRNA

PRACTICESPRINGFIELD ANESTHESIA SERVICE, INC.See all providers at this practice →

Certified Registered Nurse Anesthetist (CRNA)Springfield, MAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

Unique beneficiaries

—

Total services

Distinct HCPCS

Medicare payment

$4K

Peer benchmark

Total Medicare services vs. 1,019 Certified Registered Nurse Anesthetist (CRNA) providers in MA — above median (cohort median 159).

PRESCRIBING · PART D · 2024

No data available for this provider in 2024.

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (2)

CCN 220065

Hospital

CCN 220077

Hospital

REFERRAL NETWORK

Where Catherine O'brien'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 · 4 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
BAYSTATE MEDICAL CENTER INC	39	59
Scott Switzer Anesthesiology · Westwood, MA	14	18

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
BAYSTATE MEDICAL CENTER INC	101	148
Craig Collins Anesthesiology · Springfield, MA	24	25
BAYSTATE MEDICAL CENTER INC	18	28
Robert Madden General Surgery · West Springfield, MA	11	22

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