What is John Hammock's specialty?

John Hammock (NPI 1912082975) is a Medicare-billing provider whose primary specialty is Clinical Cardiac Electrophysiology in Quincy, IL.

Where does John Hammock practice?

John Hammock practices in Quincy, IL, based on the location reported in the CMS Medicare provider datasets for NPI 1912082975.

How much does Medicare pay John Hammock?

John Hammock (NPI 1912082975) received approximately $234K in total Medicare Part B payments, serving 1,655 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1912082975

John HammockM.D.

Clinical Cardiac ElectrophysiologyQuincy, ILI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

2,873

Unique beneficiaries

—

Total services

5,088

Distinct HCPCS

Medicare payment

$201K

Peer benchmark

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

PRESCRIBING · PART D · 2024

Total Rx claims

2,631

Beneficiaries

—

Total drug cost

$418K

Distinct drugs

Brand share

35.4%

Top prescribed drugs

Apixaban386 claims

Metoprolol Succinate323 claims

Sotalol Hcl171 claims

Flecainide Acetate164 claims

Diltiazem Hcl126 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$1K

Payment records

By payment type

Travel and Lodging$658

Food and Beverage$566

Top paying entities

Travel and Lodging$658

Food and Beverage$566

REFERRAL NETWORK

Where John Hammock'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). 97 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Willett Pang Diagnostic Radiology · Springfield, IL	267	609
Quincy Physicians & Surgeons Clinic, Pllc Clinical Laboratory · Quincy, IL	261	959
Aaron Konrad Diagnostic Radiology · Springfield, IL	221	515
Steven Krause Interventional Cardiology · Quincy, IL	191	876
John Schlepphorst Diagnostic Radiology · Hannibal, MO	187	428
BRUNEY, RUSSELL	161	415
Wissam Derian Cardiology · Quincy, IL	148	562
Stilianos Efstratiadis Cardiology · Rolla, MO	147	571
Adam Reyburn Internal Medicine · Quincy, IL	132	1,007
Stuart Pyatt Emergency Medicine · Pittsfield, IL	106	230
Antony Wollaston Emergency Medicine · Quincy, IL	95	193
Nanjappa Somanna Pulmonary Disease · Quincy, IL	89	430

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