What is Justin Mao's specialty?

Justin Mao (NPI 1427052273) is a Medicare-billing provider whose primary specialty is Clinical Cardiac Electrophysiology in Downers Grove, IL.

Where does Justin Mao practice?

Justin Mao practices in Downers Grove, IL, based on the location reported in the CMS Medicare provider datasets for NPI 1427052273.

How much does Medicare pay Justin Mao?

Justin Mao (NPI 1427052273) received approximately $235K in total Medicare Part B payments, serving 1,292 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1427052273

Justin MaoMD

Clinical Cardiac ElectrophysiologyDowners Grove, ILI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

2,585

Unique beneficiaries

—

Total services

3,127

Distinct HCPCS

Medicare payment

$208K

Peer benchmark

Total Medicare services vs. 128 Clinical Cardiac Electrophysiology providers in IL — below median (cohort median 3,989).

PRESCRIBING · PART D · 2024

Total Rx claims

3,353

Beneficiaries

—

Total drug cost

$1.1M

Distinct drugs

Brand share

35.5%

Top prescribed drugs

Apixaban589 claims

Metoprolol Succinate564 claims

Flecainide Acetate309 claims

Amiodarone Hcl276 claims

Rivaroxaban211 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$2K

Payment records

By payment type

Travel and Lodging$2K

Food and Beverage$695

Top paying entities

Travel and Lodging$2K

Food and Beverage$695

REFERRAL NETWORK

Where Justin Mao'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). 77 inbound referrers · 141 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
EDWARD HOSPITAL	425	2,427
Isis Medical, Incorporated Independent Diagnostic Testing Facility (IDTF) · Miamisburg, OH	232	385
Alan Nazerian Diagnostic Radiology · Oak Brook, IL	104	339
Moeen Saleem Clinical Cardiac Electrophysiology · Naperville, IL	99	500
Alan Brown Interventional Cardiology · Naperville, IL	94	223
SHERMAN, LEONARD	94	406
Amaar Malik Diagnostic Radiology · Naperville, IL	76	300
Anand Ramanathan Interventional Cardiology · Naperville, IL	74	422
Timothy Larkin Interventional Cardiology · Beverly, MA	70	306
Victor Hu Diagnostic Radiology · Naperville, IL	67	207
Todd Singer Diagnostic Radiology · Naperville, IL	63	253
Paul Backas Diagnostic Radiology · Naperville, IL	61	238

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
EDWARD HOSPITAL	391	2,629
DUERINCK, MARK	134	428
Isis Medical, Incorporated Independent Diagnostic Testing Facility (IDTF) · Miamisburg, OH	94	168
Aman Ali Cardiology · Naperville, IL	87	346
GOLDBERG, PAUL	84	316
Eve Mara Diagnostic Radiology · Naperville, IL	82	248
William Stephan Interventional Cardiology · Naperville, IL	81	362
ADVOCATE HEALTH AND HOSPITALS CORPORATION	81	159
Moeen Saleem Clinical Cardiac Electrophysiology · Naperville, IL	74	332
Alan Nazerian Diagnostic Radiology · Oak Brook, IL	73	216
Stanley Clark Cardiology · Naperville, IL	72	230
Michael Mitchell Diagnostic Radiology · Naperville, IL	69	216

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