PROVIDER PROFILE · NPI 1992704191

William WarrenMD

PRACTICEMEMORIAL HEART INSTITUTE, LLCSee all providers at this practice →

CardiologyChattanooga, TNI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

4,456

Unique beneficiaries

—

Total services

5,929

Distinct HCPCS

Medicare payment

$149K

Peer benchmark

Total Medicare services vs. 374 Cardiology providers in TN — top quintile (cohort median 2,451).

PRESCRIBING · PART D · 2024

Total Rx claims

12,945

Beneficiaries

—

Total drug cost

$2.2M

Distinct drugs

Brand share

27.5%

Top prescribed drugs

Apixaban1,258 claims

Amlodipine Besylate983 claims

Atorvastatin Calcium871 claims

Carvedilol832 claims

Metoprolol Succinate792 claims

QUALITY · MIPS · 2024

Final MIPS score

94.3

Quality

92.6

Cost

0.0

Improvement activities

40.0

Promoting interop.

93.2

Payment adjustment

0.81%

APM Entity

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$38

Payment records

By payment type

Food and Beverage$38

REFERRAL NETWORK

Where William Warren'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). 155 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
MEMORIAL HEALTH CARE SYSTEM INC.	1,963	4,815
MEMORIAL HEALTH CARE SYSTEM INC.	343	525
RIMER, THOMAS	275	483
Allen Atchley Cardiology · Chattanooga, TN	259	451
George Watson Diagnostic Radiology · Chattanooga, TN	216	364
PIEZ, CHARLES	191	342
MILLS, ROBERT	184	323
Kilton Kingsman Diagnostic Radiology · Chattanooga, TN	178	274
William Rowlett Diagnostic Radiology · Chattanooga, TN	176	299
James Marcum Cardiology · Cleveland, TN	173	282
Gregory Bruce Clinical Cardiac Electrophysiology · Chattanooga, TN	163	326
Calvin Ledford Cardiology · Chattanooga, TN	155	336

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