Individual provider Active NPI

Jason H Malenfant, M.D.

  • Infectious Disease Physician
  • Rockford, IL
National Provider Identifier
1578976411
Registry record updated Jun 10, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Infectious Disease PhysicianTaxonomy code 207RI0200X
License
036175082 Issued in IL
Practice address
698 Featherstone Rd
Rockford, IL 61107-6303
Phone
(815) 398-3277
Fax
(815) 484-7001
NPI assigned
Jun 9, 2014
Reactivated
Feb 6, 2015
Last updated
Jun 10, 2025By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jun 10, 2025

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 30426 WV
Infectious Disease Physician 207RI0200X 30426 WV
Infectious Disease Physician 207RI0200X 036175082 IL Primary

Addresses

Primary practice location

698 Featherstone Rd
Rockford, IL 61107-6303

Mailing address

698 Featherstone Rd
Rockford, IL 61107-6303
Phone (815) 398-3277

Other practice location 1

1249 15th St Ste 3000
Huntington, WV 25701-3663
Phone (304) 691-1000

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address jason.malenfant@marshall.cernerdirect.com

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in WV, IL2 enrollments
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20210120002447 WV Practitioner - Infectious DiseasePractitioner - Internal Medicine 4789936808 Reassigns benefits to 2 organizations
I20250617000837 IL Practitioner - Infectious DiseasePractitioner - Internal Medicine 4789936808 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Infectious DiseaseAlso: Internal Medicine
Education
Other, 2014
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Osf Multi-Specialty GroupGroup PAC ID 3678889789, 2,123 clinicians

Practice addresses (Care Compare)

698 Featherstone Rd
Rockford, IL 61107-6303
Phone (815) 398-3277

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
30426WVMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
University Physicians & Surgeons, Inc. CurrentSince Jul 10, 2023 Accepting new patients
University Physicians & Surgeons, Inc. CurrentSince Jul 10, 2023 Accepting new patients
St. Mary's Medical Management, LLC CurrentSince Dec 15, 2020 Accepting new patients
Central PA Pharmacy LLC. Current Accepting new patients
University Physicians & Surgeons, Inc Internal Medicine Current Accepting new patients
St. Mary's Medical Management, LLC Internal Medicine CurrentSince Dec 15, 2020 Accepting new patients
Osf Multi-Specialty Group Internal Medicine CurrentSince Jun 10, 2025 Accepting new patients

Locations

8600 State Route 91
Ste 130
Peoria, IL 61615
Phone (309) 683-5050

698 Featherstone Rd
Rockford, IL 61107
Phone (815) 398-3277

1249 15th St
Ste 3000
Huntington, WV 25701
Phone (304) 691-1095

1448 10th Ave
Ste 304
Huntington, WV 25701
Phone (304) 691-6381

1600 Medical Center Dr
Ste 3500
Huntington, WV 25701
Phone (304) 691-1300

2828 1st Ave
Ste 304
Huntington, WV 25702
Phone (304) 399-7213

2900 1st Ave
Huntington, WV 25702
Phone (304) 526-1111

3075 US Route 60
Huntington, WV 25705
Phone (304) 733-0004

Interoperability endpoints

  • Direct secure messaging: jason.malenfant@marshall.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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 1

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": "1402272000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1749513600000",
    "number": "1578976411",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "698 FEATHERSTONE RD",
            "city": "ROCKFORD",
            "state": "IL",
            "postal_code": "611076303",
            "telephone_number": "815-398-3277",
            "fax_number": "815-484-7001"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "698 FEATHERSTONE RD",
            "city": "ROCKFORD",
            "state": "IL",
            "postal_code": "611076303",
            "telephone_number": "815-398-3277",
            "fax_number": "815-484-7001"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1249 15th St Ste 3000",
            "address_purpose": "LOCATION",
            "city": "Huntington",
            "state": "WV",
            "postal_code": "257013663",
            "country_code": "US",
            "telephone_number": "304-691-1000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MALENFANT",
        "first_name": "JASON",
        "middle_name": "H",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2014-06-09",
        "last_updated": "2025-06-10",
        "certification_date": "2025-05-21",
        "deactivation_date": "2015-01-14",
        "reactivation_date": "2015-02-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "WV",
            "license": "30426",
            "primary": false
        },
        {
            "code": "207RI0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Infectious Disease",
            "state": "WV",
            "license": "30426",
            "primary": false
        },
        {
            "code": "207RI0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Infectious Disease",
            "state": "IL",
            "license": "036175082",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "jason.malenfant@marshall.cernerdirect.com",
            "affiliation": "N",
            "address_1": "1249 15th St Ste 3000",
            "city": "Huntington",
            "state": "WV",
            "country_code": "US",
            "postal_code": "257013663",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Rockford, IL

Sources for this page

Verify at the official NPI Registry.