NPIMap

Individual provider Active NPI

Mark J Schwartz, MD

  • Hospitalist Physician
  • Marshfield, WI
National Provider Identifier
1326156654
Registry record updated Aug 28, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Hospitalist PhysicianTaxonomy code 208M00000X
License
39152 Issued in WI
Practice address
1000 N Oak Ave
Marshfield, WI 54449
Phone
(715) 387-5537
NPI assigned
Aug 27, 2006
Last updated
Aug 28, 2025By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Aug 28, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 39152 WI
Hospitalist Physician 208M00000X 39152 WI Primary

Addresses

Primary practice location

1000 N Oak Ave
Marshfield, WI 54449

Mailing address

1000 N Oak Ave
Marshfield, WI 54449-5777

Other identifiers 1

IdentifierTypeStateIssuer
32555000MedicaidWI

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address him@marshfieldclinichealthsystem.cernerdirect.com Health Information Exchange (HIE)

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
I20101013001226 WI Practitioner - HospitalistPractitioner - Internal Medicine 6406048016 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
HospitalistAlso: Internal Medicine
Education
Wayne State University School of Medicine, 1996
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
MCHS Hospitals IncGroup PAC ID 5698071173, 1,195 clinicians

Practice addresses (Care Compare)

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

3400 Ministry Pkwy
Weston, WI 54476-5220
Phone (715) 393-1000

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

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
MCHS Hospitals Inc Internal Medicine Current Accepting new patients
MCHS Hospitals Inc CurrentSince Mar 1, 2018 Accepting new patients
Marshfield Clinic Inc CurrentSince Jul 1, 1999 Accepting new patients
MCHS Hospitals Inc CurrentSince Mar 1, 2018 Accepting new patients

Locations

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

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

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

Interoperability endpoints

  • Direct secure messaging: him@marshfieldclinichealthsystem.cernerdirect.com
  • Direct secure messaging: mark.schwartz@marshfieldclinichealthsystem.cernerdirect.com

Organizations & group practices 4

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

Hospital & facility affiliations 4

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": "1156636800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1756339200000",
    "number": "1326156654",
    "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": "544495777"
        },
        {
            "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": "54449",
            "telephone_number": "715-387-5537"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SCHWARTZ",
        "first_name": "MARK",
        "middle_name": "J",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-08-27",
        "last_updated": "2025-08-28",
        "certification_date": "2025-08-28",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "WI",
            "license": "39152",
            "primary": false
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "WI",
            "license": "39152",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "32555000",
            "state": "WI"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "him@marshfieldclinichealthsystem.cernerdirect.com",
            "affiliation": "N",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "address_1": "1000 N Oak Ave",
            "city": "Marshfield",
            "state": "WI",
            "country_code": "US",
            "postal_code": "54449",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Marshfield, WI

Sources for this page

Verify at the official NPI Registry.