PROVIDER PROFILE · NPI 1780709337

Anthony MerzaM.D.

PRACTICEAMC ANESTHESIA LTDSee all providers at this practice →

GastroenterologyChicago, ILI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

Unique beneficiaries

—

Total services

Distinct HCPCS

Medicare payment

$4K

Peer benchmark

Total Medicare services vs. 606 Gastroenterology providers in IL — bottom quintile (cohort median 726).

PRESCRIBING · PART D · 2024

Total Rx claims

Beneficiaries

—

Total drug cost

$2K

Distinct drugs

Brand share

62.7%

Top prescribed drugs

Sodium Chloride/Nahco3/Kcl/Peg42 claims

Omeprazole13 claims

Pantoprazole Sodium12 claims

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 Anthony Merza'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). 8 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
LIFESCAN LABORATORY, INC.	43	212
WANGERIN, REET	42	74
TAN, AILYN	34	46
Rene Velazco Family Practice · Chicago, IL	17	53
Ermias Tilahun Internal Medicine · Chicago, IL	17	34
NIZIOLEK, ROMAN	14	20
MIFF, STEPHEN	11	40
Bharat Shah Internal Medicine · Chicago, IL	11	59

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