Active NPI
Jason H Malenfant, M.D.
- Infectious Disease Physician
- Rockford, IL
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Infectious Disease Physician
- License
- 036175082
- 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, 2025
- Sex
- Male
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 3
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| 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
| Type | Endpoint | Use | Affiliation |
|---|---|---|---|
| Direct Messaging Address | jason.malenfant@marshall.cernerdirect.com |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in WV, IL
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 2
Care Compare profile
Medicare Care Compare- Specialty
- Infectious Disease
- Education
- Other, 2014
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
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
| License | State | Type | Specialty |
|---|---|---|---|
| 30426 | WV | MD | Internal Medicine Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| University Physicians & Surgeons, Inc. | Current | Accepting new patients | |
| University Physicians & Surgeons, Inc. | Current | Accepting new patients | |
| St. Mary's Medical Management, LLC | Current | 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 | Current | Accepting new patients |
| Osf Multi-Specialty Group | Internal Medicine | Current | 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
- 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.
-
- Internal Medicine Physician
- Peoria, IL
- NPI 1922445527
-
- Family Medicine Physician
- Huntington, WV
- NPI 1922155217
Internal Medicine
-
- Internal Medicine Physician
- Huntington, WV
- NPI 1730183286
-
dba patton pharmacy and v&s variety
- Community/Retail Pharmacy
- Patton, PA
- NPI 1578541413
-
- Orthopaedic Surgery Physician
- Huntington, WV
- NPI 1205596665
-
- Health & Wellness Coach
- Louisa, KY
- NPI 1073256665
-
- Mental Health Clinic/Center (Including Community Mental Health Center)
- Huntington, WV
- NPI 1124594486
Hospital & facility affiliations 1
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
dba OSF Saint Anthony Medical Center
- General Acute Care Hospital
- Rockford, IL
- NPI 1790739977
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
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 10, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.