NPIMap

Individual provider Active NPI

Guruprasad D Naik, MD

  • Cardiovascular Disease Physician
  • Marshfield, WI
National Provider Identifier
1508966813
Registry record updated Oct 16, 2020
On this page

Key facts

NPPES NPI Registry
Primary specialty
Cardiovascular Disease PhysicianTaxonomy code 207RC0000X
License
45969 Issued in WI
Practice address
1000 N Oak Ave
Marshfield, WI 54449-5703
Phone
(715) 387-5511
NPI assigned
Sep 25, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Oct 16, 2020

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Cardiovascular Disease Physician 207RC0000X 45969-20 WI
Cardiovascular Disease Physician 207RC0000X 45969 WI Primary

Addresses

Primary practice location

1000 N Oak Ave
Marshfield, WI 54449-5703

Mailing address

1000 N Oak Ave
Marshfield, WI 54449-5703
Phone (715) 387-5511

Other practice location 1

2727 Plaza Dr
Wausau, WI 54401-4129
Phone (715) 847-3000

Other identifiers 1

IdentifierTypeStateIssuer
34421800MedicaidWI

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address him@marshfieldclinichealthsystem.cernerdirect.com Direct

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in WI
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
I20040129000020 WI Practitioner - Interventional CardiologyPractitioner - Cardiovascular Disease (Cardiology) 8325941230 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Interventional CardiologyAlso: Cardiovascular Disease (Cardiology)
Education
Other, 1992
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Mercy Health System CorporationGroup PAC ID 7416860440, 749 clinicians
MCHS Hospitals IncGroup PAC ID 5698071173, 1,195 clinicians

Practice addresses (Care Compare)

1000 Mineral Point Ave
Janesville, WI 53548-2940
Phone (608) 756-6000

1000 N Oak Ave
Marshfield, WI 54449-5703
Phone (715) 387-5511

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
80.58 of 100Reported as group
Quality
55.5
Promoting interoperability
100
Improvement activities
40
Cost
71.46

Procedures performed for Medicare patients

ProcedureNumber of procedures
Coronary angioplasty and stenting11
Pacemaker insertion or repair1-10

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
45969WIMDCardiovascular Disease Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Mercy Health System Corporation CurrentSince Jan 18, 2026 Accepting new patients
MCHS Hospitals Inc CurrentSince Jun 10, 2019 Accepting new patients
Mercy Health System Corporation CurrentSince Jan 18, 2026 Accepting new patients
Marshfield Clinic Inc CurrentSince Aug 25, 2003 Accepting new patients
MCHS Hospitals Inc Current Accepting new patients
MCHS Hospitals Inc CurrentSince Jun 10, 2019 Accepting new patients
Memorial Hospital Inc Past Accepting new patients

Locations

3501 Golf Rd
Eau Claire, WI 54701
Phone (715) 858-4200

1000 Starr Ave
Eau Claire, WI 54703
Phone (715) 858-4850

3400 Deerfield Dr
Janesville, WI 53546
Phone (608) 314-3600

1000 Mineral Point Ave
Janesville, WI 53548
Phone (608) 261-6868

1000 N Oak Ave
Marshfield, WI 54449
Phone (715) 387-5111

4100 State Highway 66
Stevens Point, WI 54482
Phone (715) 343-7700

2727 Plaza Dr
Wausau, WI 54401
Phone (715) 847-3000

Interoperability endpoints

  • Direct secure messaging: guruprasad.naik@marshfieldclinichealthsystem.cernerdirect.com
  • Direct secure messaging: him@marshfieldclinichealthsystem.cernerdirect.com

Organizations & group practices 7

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 6

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": "1159142400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1602806400000",
    "number": "1508966813",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1000 N OAK AVE",
            "city": "MARSHFIELD",
            "state": "WI",
            "postal_code": "544495703",
            "telephone_number": "715-387-5511"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1000 N OAK AVE",
            "city": "MARSHFIELD",
            "state": "WI",
            "postal_code": "544495703",
            "telephone_number": "715-387-5511"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2727 Plaza Dr",
            "address_purpose": "LOCATION",
            "city": "Wausau",
            "state": "WI",
            "postal_code": "544014129",
            "country_code": "US",
            "telephone_number": "715-847-3000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "NAIK",
        "first_name": "GURUPRASAD",
        "middle_name": "D",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-09-25",
        "last_updated": "2020-10-16",
        "certification_date": "2020-10-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "WI",
            "license": "45969-20",
            "primary": false
        },
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "WI",
            "license": "45969",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "34421800",
            "state": "WI"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "him@marshfieldclinichealthsystem.cernerdirect.com",
            "affiliation": "N",
            "endpointDescription": "marshfield clinic EHR",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "CSV",
            "contentTypeDescription": "CSV",
            "address_1": "1000 N Oak Ave",
            "city": "Marshfield",
            "state": "WI",
            "country_code": "US",
            "postal_code": "544495703",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Marshfield, WI

Sources for this page

Verify at the official NPI Registry.