What is John Ioannou's specialty?

John Ioannou (NPI 1851330328) is a Medicare-billing provider whose primary specialty is Nephrology in Rockville Centre, NY.

Where does John Ioannou practice?

John Ioannou practices in Rockville Centre, NY, based on the location reported in the CMS Medicare provider datasets for NPI 1851330328.

How much does Medicare pay John Ioannou?

John Ioannou (NPI 1851330328) received approximately $363K in total Medicare Part B payments, serving 931 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1851330328

John IoannouM.D.

PRACTICEISLAND RENAL PHYSICIANS PCSee all providers at this practice →

NephrologyRockville Centre, NYI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

2,996

Unique beneficiaries

—

Total services

5,717

Distinct HCPCS

Medicare payment

$350K

Peer benchmark

Total Medicare services vs. 690 Nephrology providers in NY — top quintile (cohort median 875).

PRESCRIBING · PART D · 2024

Total Rx claims

2,105

Beneficiaries

—

Total drug cost

$405K

Distinct drugs

Brand share

20.3%

Top prescribed drugs

Dapagliflozin Propanediol159 claims

Losartan Potassium146 claims

Amlodipine Besylate129 claims

Furosemide115 claims

Allopurinol99 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$1K

Payment records

By payment type

Food and Beverage$1K

Top paying entities

Food and Beverage$1K

REFERRAL NETWORK

Where John Ioannou'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). 119 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
KLEINMAN, LAWRENCE	259	945
Norma Wenger Nephrology · Rockville Centre, NY	258	825
Douglas Lax Nephrology · Rockville Centre, NY	225	790
Micky Chun Nephrology · Rockville Centre, NY	212	772
Quest Diagnostics Clinical Laboratories Inc Clinical Laboratory · Melville, NY	176	718
Jonathan Lerner Diagnostic Radiology · Port Jefferson, NY	102	312
Raul Mendoza Cardiology · Lawrence, NY	99	288
Maqsood Alam Infectious Disease · Jericho, NY	88	271
Conellia Ha Diagnostic Radiology · Rockville Centre, NY	73	244
Sydney Yoon Diagnostic Radiology · Oceanside, NY	69	218
Andrew Hwang Diagnostic Radiology · Anaheim, CA	66	169
Seniorcare Emergency Medical Services Inc. Ambulance Service Provider · Bronx, NY	49	118

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