Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Jason H Malenfant, MD

Individual provider Internal Medicine Physician · NPI 1578976411

Jason H Malenfant, MD is an Infectious Disease in Rockford, Illinois. Qualified in 2014, 12 years ago. Practices with Osf Multi-Specialty Group, a 2,128-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Illinois and West Virginia.

Years since qualifying
12
Licensed in
IL, WV
In the registry since
2014
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

698 Featherstone Rd
Rockford, IL 61107-6303
Phone: (815) 398-3277
Fax: (815) 484-7001
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

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

Specialties & licences

Infectious Disease Physician (primary) Taxonomy 207RI0200X · Licence 036175082 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 30426 (WV)
Infectious Disease Physician Taxonomy 207RI0200X · Licence 30426 (WV)

Record details

NPI number1578976411
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 9, 2014
Last updated in NPPESJune 10, 2025
Certification dateMay 21, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINFECTIOUS DISEASE
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2014 (12 years in practice)
Group practice Osf Multi-Specialty Group — 2128 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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