What is John Clark's specialty?

John Clark (NPI 1578631784) is a Medicare-billing provider whose primary specialty is Nephrology in Huntsville, AL.

Where does John Clark practice?

John Clark practices in Huntsville, AL, based on the location reported in the CMS Medicare provider datasets for NPI 1578631784.

How much does Medicare pay John Clark?

John Clark (NPI 1578631784) received approximately $268K in total Medicare Part B payments, serving 520 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

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

Top paying entities

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

Healthparse Signals

Monitor this provider for changes — dated NPI change events