NPIMap

Individual provider Active NPI

William Carl Mercer, MD

  • Family Medicine Physician
  • Wheeling, WV
National Provider Identifier
1780687558
Registry record updated Sep 19, 2022
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Medicine PhysicianTaxonomy code 207Q00000X
License
12007 Issued in WV
Practice address
58 16TH St
FL 3
Wheeling, WV 26003-3660
Phone
(304) 232-5725
Fax
(304) 233-0698
NPI assigned
May 24, 2005
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Sep 19, 2022

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Family Medicine Physician 207Q00000X 12007 WV Primary

Addresses

Primary practice location

58 16TH St
FL 3
Wheeling, WV 26003-3660

Mailing address

58 16TH St
FL 3
Wheeling, WV 26003-3660
Phone (304) 232-5725

Other identifiers 1

IdentifierTypeStateIssuer
12007OtherWVSTATE LICENSE

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address wmercer195406@direct.wvuhsdirect.com Health Information Exchange (HIE)

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in WV
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20110303001006 WV Practitioner - Family PracticePractitioner - Geriatric Medicine 1850346248 Reassigns benefits to 1 organization
Practice locations: Wheeling, WV

Care Compare profile

Medicare Care Compare
Specialty
Family PracticeAlso: Geriatric Medicine
Education
West Virginia University School of Medicine, 1979
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Wheeling Hospital IncGroup PAC ID 5799689493, 433 clinicians

Practice addresses (Care Compare)

58 16TH St
Wheeling, WV 26003-3660
Phone (304) 234-2000

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
95.34 of 100Reported as apm
Quality
79.86
Promoting interoperability
100
Improvement activities
40

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
12007WVMDFamily Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Wheeling Hospital Inc Family Medicine CurrentSince Dec 1, 2018 Accepting new patients
Wheeling Hospital Inc CurrentSince Dec 1, 2018 Accepting new patients
Wheeling Rehabilitation and Healthcare Center LLC Past Accepting new patients
Wheeling Hospital Inc Past Accepting new patients
Good Shepherd Nursing Home LC Past Accepting new patients
William C Mercer PastSince Feb 1, 1987 Accepting new patients

Locations

58 16th St
Fl 3
Wheeling, WV 26003
Phone (304) 232-5725

58 16th St
Wheeling, WV 26003
Phone (304) 234-1985

1 Medical Park
Wheeling, WV 26003
Phone (304) 243-3124

58 16th St
Fl Third
Wheeling, WV 26003
Phone (304) 232-5725

Ownership & related parties

All facility ownership & control disclosures 1

Facilities whose Medicare enrollment lists this provider’s PECOS associate ID as an owner or managing party.

FacilityTypeRoleSince
Continuous Care Center Wheeling HospitalWheeling, WV, CCN 515055 Skilled nursing facility Operational/Managerial Control
Trustee of the SNF
Adp of the SNF		 Dec 5, 2025
Dec 5, 2025
Dec 5, 2025

Owned or controlled facilities with NPI records 1

Facilities whose Medicare enrollment lists this provider as an owner, officer, director or managing party.

  • Wheeling Hospital Inc
    • Nursing Facility/Intermediate Care Facility
    • Wheeling, WV
    • NPI 1114913449

    Adp of the SNF, Operational/Managerial Control, Trustee of the SNF

    CMS ownership

Organizations & group practices 6

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

Hospital & facility affiliations 5

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1116892800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1663545600000",
    "number": "1780687558",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "58 16TH ST",
            "address_2": "FL 3",
            "city": "WHEELING",
            "state": "WV",
            "postal_code": "260033660",
            "telephone_number": "304-232-5725",
            "fax_number": "304-233-0698"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "58 16TH ST",
            "address_2": "FL 3",
            "city": "WHEELING",
            "state": "WV",
            "postal_code": "260033660",
            "telephone_number": "304-232-5725",
            "fax_number": "304-233-0698"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MERCER",
        "first_name": "WILLIAM",
        "middle_name": "CARL",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2005-05-24",
        "last_updated": "2022-09-19",
        "certification_date": "2022-09-19",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "WV",
            "license": "12007",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "STATE LICENSE",
            "identifier": "12007",
            "state": "WV"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "wmercer195406@direct.wvuhsdirect.com",
            "affiliation": "N",
            "endpointDescription": "Direct Address",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "CSV",
            "contentTypeDescription": "CSV",
            "address_1": "58 16th St",
            "city": "Wheeling",
            "state": "WV",
            "country_code": "US",
            "postal_code": "260033609",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Wheeling, WV

Sources for this page

Verify at the official NPI Registry.