Jason H. Malenfant, M.D.
Infectious Disease Physician · Rockford, IL
Jason H. Malenfant, M.D. is an infectious disease physician with a practice address in Rockford, Illinois, and NPI 1578976411, issued on Jun 9, 2014. Check the license (Illinois 036175082, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Jason H. Malenfant
- Credential
- M.D.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License numbers
- 036175082 IL
30426 WV
Self-reported in NPPES; status is on the state search - Practice location
- 698 Featherstone RD, Rockford, IL 61107
- Phone
- (815) 398-3277
- Enumerated
- Jun 9, 2014
- Record last updated
- Jun 10, 2025
- Fax
- (815) 484-7001
- Medicare enrollment
- Enrolled (PECOS I20250617000837); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 464 in Illinois → Look up another NPI →
Also registered at 698 Featherstone RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Charles Frey, DOAllergy & Immunology Physician1356321244
- Leesa Gillooley, PA-CPhysician Assistant1154567964
- Albert Hudson, MDDermatopathology Physician1053391334
Verify Jason H. Malenfant in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036175082Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average infectious disease physician in 2024
94 Medicare Part D claims for 49 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D.
Most prescribed
- Linezolid14 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $26.36
1 payment: food and beverage; the largest payer was Abbvie Inc. The 3,895 providers of this specialty with any payment received $4,362.19 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Osf Multi-Specialty GroupRockford, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jason H. Malenfant among 464 infectious disease physician records in Illinois
Jason H. Malenfant, M.D. is one of 464 infectious disease physician records with a practice address in Illinois. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 75% of them.
- NPI issued2014 · 75% of these records are older, 22% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2014 · median 2004 among the 311 with a school on file
- Record last updated2025 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in Illinois
There are 464 infectious disease physician records in Illinois.
All 464 in Illinois → Every provider in Rockford → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Kavitha Subramanian, M.D.Rockford, IL 611071891817441
- Scott Homann, M.D.Rockford, IL 611041689674541
- Geoffrey Tsaras, MDRockford, IL 611041023278769
- Moamen Al Zoubi, MDRockford, IL 611031770902587
- Suma Rao, MDRockford, IL 611021346223294
- Syed Quadri, MDRockford, IL 611141417190265
- Hussein Zaioor, MDSterling, IL 610811013919943
- Robert Geller, MDFreeport, IL 610321013983212
Common questions
What is Jason H. Malenfant, M.D.'s NPI number?
Jason H. Malenfant, M.D.'s National Provider Identifier (NPI) is 1578976411, issued on Jun 9, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Jason H. Malenfant, M.D. located?
The NPPES record lists a practice address at 698 Featherstone RD, Rockford, IL, 61107. Phone: (815) 398-3277. Providers update this record themselves, so call before visiting.
How can I verify Jason H. Malenfant, M.D.'s license?
NPPES lists Illinois license number 036175082, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jason H. Malenfant, M.D. prescribe under Medicare Part D?
In 2024, Jason H. Malenfant, M.D. had 94 Medicare Part D claims for 49 beneficiaries; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.