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PROVIDER PROFILE · NPI 1356437081

Martha O'brienCRNA

Certified Registered Nurse Anesthetist (CRNA)Boston, MAI
CROSS-REFERENCE

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ProviderScore
OIG/SAM exclusion screening, sanctions history
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PRESCRIBING · PART D · 2024
No data available for this provider in 2024.
MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
47
Unique beneficiaries
—
Total services
48
Distinct HCPCS
2
Medicare payment
$3K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 1,019 Certified Registered Nurse Anesthetist (CRNA) providers in MA — below median (cohort median 159).
QUALITY · MIPS · 2024
No data available for this provider in 2024.
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
No data available for this provider in 2024.
REFERRAL NETWORK

Where Martha 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). 5 inbound referrers · 15 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
Tom Hsu
Ophthalmology · Boston, MA
5187
Peter Rapoza
Ophthalmology · Boston, MA
4179
THE GENERAL HOSPITAL CORPORATION2435
DOLL, DAVID1919
Quest Diagnostics Massachusetts Llc
Clinical Laboratory · Marlborough, MA
1719
Refers patients to
Outbound — where patients go next
PhysicianPatientsVisits
Boston Eye Surgery & Laser Center Trust
Ambulatory Surgical Center · Waltham, MA
328416
JOHNSON, MARK132147
COHEN, STEPHEN114144
HENDERSON, BONNIE59149
Michael Raizman
Ophthalmology · Boston, MA
57125
AMRHEIN, ROBERT5759
JAMISON, STEPHEN4242
Claudia Richter
Ophthalmology · Boston, MA
3679
Nicoletta Fynn-Thompson
Ophthalmology · Boston, MA
3051
Laura Fine
Ophthalmology · Boston, MA
2660
NEWTON-WELLESLEY HOSPITAL1932
VHS ACQUISITION SUBSIDIARY NUMBER 9 INC1416
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.