PROVIDER PROFILE · NPI 1891980777

William ChastainMD

Internal MedicineGreenville, SCI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

569

Unique beneficiaries

—

Total services

1,030

Distinct HCPCS

Medicare payment

$73K

Peer benchmark

Total Medicare services vs. 1,190 Internal Medicine providers in SC — above median (cohort median 884).

PRESCRIBING · PART D · 2024

Total Rx claims

163

Beneficiaries

—

Total drug cost

$7K

Distinct drugs

Brand share

16.0%

Top prescribed drugs

Prednisone31 claims

Cefdinir24 claims

Metoprolol Succinate17 claims

Amlodipine Besylate14 claims

Carvedilol14 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$57

Payment records

By payment type

Food and Beverage$57

REFERRAL NETWORK

Where William Chastain'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). 50 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Michael Enright Diagnostic Radiology · Spartanburg, SC	78	136
PARNES, NEIL	67	113
KAVANAGH, JOSEPH	61	101
Kelan Brown Diagnostic Radiology · Spartanburg, SC	41	74
KURKJIAN, JOSEPH	41	74
David Pelino Diagnostic Radiology · Spartanburg, SC	34	69
Anthony Sanchez Orthopedic Surgery · Spartanburg, SC	30	104
Mary Leonardi Physician Assistant · Greenville, SC	29	43
NPI 1427036144	26	95
David Cunningham Nurse Practitioner · Spartanburg, SC	26	42
HOMESTEAD HOSPICE OF GREENVILLE, LLC	25	110
Joan Burkhardt Diagnostic Radiology · Spartanburg, SC	25	51

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