What is William Calhoun's specialty?

William Calhoun (NPI 1952324303) is a Medicare-billing provider whose primary specialty is Cardiology in South Weymouth, MA.

Where does William Calhoun practice?

William Calhoun practices in South Weymouth, MA, based on the location reported in the CMS Medicare provider datasets for NPI 1952324303.

How much does Medicare pay William Calhoun?

William Calhoun (NPI 1952324303) received approximately $164K in total Medicare Part B payments, serving 1,491 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1952324303

William CalhounMD

PRACTICESOUTH SHORE CARDIOLOGY PCSee all providers at this practice →

CardiologySouth Weymouth, MAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

2,326

Unique beneficiaries

—

Total services

3,475

Distinct HCPCS

Medicare payment

$154K

Peer benchmark

Total Medicare services vs. 693 Cardiology providers in MA — above median (cohort median 1,819).

PRESCRIBING · PART D · 2024

Total Rx claims

2,461

Beneficiaries

—

Total drug cost

$505K

Distinct drugs

Brand share

22.9%

Top prescribed drugs

Metoprolol Succinate535 claims

Apixaban311 claims

Lisinopril248 claims

Atorvastatin Calcium228 claims

Amlodipine Besylate148 claims

QUALITY · MIPS · 2024

Final MIPS score

90.8

Quality

78.0

Cost

84.8

Improvement activities

40.0

Promoting interop.

0.0

Payment adjustment

0.66%

Individual

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$23

Payment records

By payment type

Food and Beverage$23

Top paying entities

Food and Beverage$23

REFERRAL NETWORK

Where William Calhoun'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). 79 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
SOUTH SHORE HOSPITAL INC.	516	2,182
Quest Diagnostics Massachusetts Llc Clinical Laboratory · Marlborough, MA	165	742
Harbor Medical Associates, Inc. Clinical Laboratory · South Weymouth, MA	136	652
Robert Gore Diagnostic Radiology · South Weymouth, MA	117	239
Stephen Bliss Diagnostic Radiology · Los Angeles, CA	86	190
James Strain Diagnostic Radiology · Weymouth, MA	80	148
Rafael Altieri Diagnostic Radiology · South Weymouth, MA	68	113
FALLON EMERGENCY MEDICAL SERVICES, INC.	67	120
James Suojanen Diagnostic Radiology · South Weymouth, MA	58	114
KELLEY, RUSSELL	57	99
Ori Preis Diagnostic Radiology · Boston, MA	56	131
BEZREH, JAMES	55	105

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