John Joseph Farrell, MD
Infectious Disease Physician · Peoria, IL
John Joseph Farrell, MD is an infectious disease physician with a practice address in Peoria, Illinois, and NPI 1043284649, issued on Feb 13, 2006. Check the license (Illinois 036111223, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- John Joseph Farrell
- Credential
- MD
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- 036111223 IL
Self-reported in NPPES; status is on the state search - Practice location
- Department OF Internal Medicine, Peoria, IL 61637
- Phone
- (309) 655-7734
- Enumerated
- Feb 13, 2006
- Record last updated
- Aug 5, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicaid ID
- 036111223 IL
- Medicare enrollment
- Enrolled (PECOS I20040626000052); accepts Medicare assignment
- Medical or professional school
- Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University, 1995
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 464 in Illinois → Look up another NPI →
Verify John Joseph Farrell 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 036111223Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average infectious disease physician in 2024
40 Medicare Part D claims, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 45% of claims.
Most prescribed
- Vancomycin Hcl17 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.
Bills Medicare through one group practice
- The Board OF Trustees OF The University OF IllinoisPeoria, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Joseph Farrell among 464 infectious disease physician records in Illinois
John Joseph Farrell, MD 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 2006, is newer than 16% of them.
- NPI issued2006 · 16% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated1995 · median 2004 among the 311 with a school on file
- Record last updated2011 · 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 Peoria → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Rone Chun Lin, M.D.Peoria, IL 616371245473701
- Matthew McGath, MDPeoria, IL 616371609434653
- Marlynn Patel, MDPeoria, IL 616371720049786
- Nikhut SiddiquePeoria, IL 616371982101333
- David Slagle, MDPeoria, IL 616371891763082
- Stephen Doughty, MDPeoria Heights, IL 616161255327631
- Aline Malebranche, M.D.Peoria Heights, IL 616161649583485
- Isha Bhatt, MS, M.D.Peoria, IL 616021598148363
Common questions
What is John Joseph Farrell, MD's NPI number?
John Joseph Farrell, MD's National Provider Identifier (NPI) is 1043284649, issued on Feb 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Joseph Farrell, MD located?
The NPPES record lists a practice address at Department OF Internal Medicine, Peoria, IL, 61637. Phone: (309) 655-7734. Providers update this record themselves, so call before visiting.
How can I verify John Joseph Farrell, MD's license?
NPPES lists Illinois license number 036111223, 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 John Joseph Farrell, MD prescribe under Medicare Part D?
In 2024, John Joseph Farrell, MD had 40 Medicare Part D claims; 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.