What is Erwin Mermelstein's specialty?

Erwin Mermelstein (NPI 1538102843) is a Medicare-billing provider whose primary specialty is Cardiology in East Brunswick, NJ.

Where does Erwin Mermelstein practice?

Erwin Mermelstein practices in East Brunswick, NJ, based on the location reported in the CMS Medicare provider datasets for NPI 1538102843.

How much does Medicare pay Erwin Mermelstein?

Erwin Mermelstein (NPI 1538102843) received approximately $207K in total Medicare Part B payments, serving 988 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1538102843

Erwin MermelsteinM.D.

CardiologyEast Brunswick, NJI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,857

Unique beneficiaries

—

Total services

3,520

Distinct HCPCS

Medicare payment

$203K

Peer benchmark

Total Medicare services vs. 891 Cardiology providers in NJ — above median (cohort median 2,933).

PRESCRIBING · PART D · 2024

Total Rx claims

6,603

Beneficiaries

—

Total drug cost

$1.1M

Distinct drugs

Brand share

17.6%

Top prescribed drugs

Atorvastatin Calcium907 claims

Rosuvastatin Calcium707 claims

Ezetimibe657 claims

Amlodipine Besylate633 claims

Metoprolol Succinate515 claims

QUALITY · MIPS · 2024

Final MIPS score

98.5

Quality

84.3

Cost

0.0

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.99%

APM Entity

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$54

Payment records

By payment type

Food and Beverage$54

Top paying entities

Food and Beverage$54

REFERRAL NETWORK

Where Erwin Mermelstein'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). 73 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
ROBERT WOOD JOHNSON UNIVERSITY HOSPITAL, INC	296	1,202
Laboratory Corporation Of America Holdings Clinical Laboratory · Raritan, NJ	199	551
SAINT PETER'S UNIVERSITY HOSPITAL	147	456
Amit Kalra Cardiology · East Brunswick, NJ	114	396
Dwayne Siu Clinical Cardiac Electrophysiology · East Brunswick, NJ	110	440
Marc Scheiner Clinical Cardiac Electrophysiology · East Brunswick, NJ	106	394
Dory Altmann Interventional Cardiology · East Brunswick, NJ	105	563
Jeanne Demoss Internal Medicine · East Brunswick, NJ	81	262
David Schaer Cardiology · East Brunswick, NJ	79	532
Anthony Altobelli Cardiology · East Brunswick, NJ	74	290
Daniel Shindler Cardiology · New Brunswick, NJ	70	222
Liliana Cohen Cardiology · Florham Park, NJ	67	249

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