What is Gearoid Mcmahon's specialty?

Gearoid Mcmahon (NPI 1992025274) is a Medicare-billing provider whose primary specialty is Nephrology in Boston, MA.

Where does Gearoid Mcmahon practice?

Gearoid Mcmahon practices in Boston, MA, based on the location reported in the CMS Medicare provider datasets for NPI 1992025274.

How much does Medicare pay Gearoid Mcmahon?

Gearoid Mcmahon (NPI 1992025274) received approximately $114K in total Medicare Part B payments, serving 356 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1992025274

Gearoid McmahonMB BCH BAO

NephrologyBoston, MAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

591

Unique beneficiaries

—

Total services

1,353

Distinct HCPCS

Medicare payment

$110K

Peer benchmark

Total Medicare services vs. 270 Nephrology providers in MA — above median (cohort median 904).

PRESCRIBING · PART D · 2024

Total Rx claims

149

Beneficiaries

—

Total drug cost

$68K

Distinct drugs

Brand share

39.6%

Top prescribed drugs

Empagliflozin33 claims

Calcitriol31 claims

Lisinopril18 claims

Hydrochlorothiazide17 claims

Dapagliflozin Propanediol15 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Gearoid Mcmahon'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). 34 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Dirk Hentschel Nephrology · Boston, MA	38	189
Boston Public Health Commission Ambulance Service Provider · Boston, MA	37	171
Malavalli Gopal Cardiology · Boston, MA	33	133
FALLON SERVICE, INC.	31	487
Jeffrey Cohen Cardiology · Jamaica Plain, MA	30	80
Adina Voiculescu Nephrology · Boston, MA	30	201
DIALYSIS CLINIC INC.	29	101
Joseph Fonte Diagnostic Radiology · Brighton, MA	26	87
Daniel Souza Diagnostic Radiology · Boston, MA	25	96
Wendy Landman Internal Medicine · Boston, MA	22	40
Daniel Lee Internal Medicine · Dedham, MA	21	113
Jennifer Uyeda Diagnostic Radiology · Boston, MA	18	51

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