What is William Mercer's specialty?

William Mercer (NPI 1780687558) is a Medicare-billing provider whose primary specialty is Family Practice in Wheeling, WV.

Where does William Mercer practice?

William Mercer practices in Wheeling, WV, based on the location reported in the CMS Medicare provider datasets for NPI 1780687558.

How much does Medicare pay William Mercer?

William Mercer (NPI 1780687558) received approximately $61K in total Medicare Part B payments, serving 174 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1780687558

William MercerMD

Family PracticeWheeling, WVI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

444

Unique beneficiaries

—

Total services

865

Distinct HCPCS

Medicare payment

$58K

Peer benchmark

Total Medicare services vs. 622 Family Practice providers in WV — above median (cohort median 500).

PRESCRIBING · PART D · 2024

Total Rx claims

20,577

Beneficiaries

—

Total drug cost

$1.5M

Distinct drugs

202

Brand share

22.4%

Top prescribed drugs

Levothyroxine Sodium987 claims

Furosemide944 claims

Atorvastatin Calcium727 claims

Apixaban630 claims

Metoprolol Succinate524 claims

QUALITY · MIPS · 2024

Final MIPS score

95.3

Quality

79.9

Cost

0.0

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.86%

APM Entity

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where William Mercer'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). 57 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
WHEELING HOSPITAL INC	478	5,340
OHIO VALLEY MEDICAL CENTER, INC	132	693
GUARDIAN ELDER CARE AT WHEELING LLC	116	488
Mark Benson Diagnostic Radiology · Wheeling, WV	116	435
Tri State Ambulance Inc Ambulance Service Provider · North Canton, OH	94	499
Edward Chiu Cardiology · Wheeling, WV	77	418
Carter Kenamond Diagnostic Radiology · Wheeling, WV	60	251
GUARDIAN ELDER CARE AT WHEELING LLC	58	450
City Of Wheeling Ambulance Service Provider · Wheeling, WV	57	318
Michael Maroney Diagnostic Radiology · Wheeling, WV	54	197
John Defilippo Diagnostic Radiology · Wheeling, WV	52	191
Kara Dougherty Nurse Practitioner · Wheeling, WV	47	135

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