PROVIDER PROFILE · NPI 1578631784

John ClarkM.D.

NephrologyHuntsville, ALI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,087

Unique beneficiaries

—

Total services

2,079

Distinct HCPCS

Medicare payment

$190K

Peer benchmark

Total Medicare services vs. 128 Nephrology providers in AL — top quintile (cohort median 1,344).

PRESCRIBING · PART D · 2024

Total Rx claims

1,168

Beneficiaries

—

Total drug cost

$266K

Distinct drugs

Brand share

19.5%

Top prescribed drugs

Paricalcitol144 claims

Amlodipine Besylate103 claims

Losartan Potassium97 claims

Carvedilol86 claims

Hydralazine Hcl82 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$922

Payment records

By payment type

Food and Beverage$922

REFERRAL NETWORK

Where John Clark'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). 84 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
THE HEALTH CARE AUTHORITY OF THE CITY OF HUNTSVILLE	533	2,968
HUNTSVILLE EMERGENCY MEDICAL SERVICES, INC.	129	494
David Bains Nephrology · Huntsville, AL	121	426
Shi-Chi Cheng Cardiology · Huntsville, AL	91	307
Muhammad Khan Cardiology · Huntsville, AL	78	180
Timothy Baker Diagnostic Radiology · Huntsville, AL	67	197
Tangayi Githu Diagnostic Radiology · Saint Louis, MO	64	187
Spectra East, Inc. Clinical Laboratory · Rockleigh, NJ	62	207
Michael Smith Diagnostic Radiology · Huntsville, AL	60	162
AKENHEAD, ROBERT	56	123
Richard Coleman Diagnostic Radiology · Huntsville, AL	54	151
John Collins Diagnostic Radiology · Huntsville, AL	53	128

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