John Jeffrey Williamson, P.A.
Physician Assistant · Bloomington, IL
John Jeffrey Williamson, P.A. is a physician assistant with a practice address in Bloomington, Illinois, and NPI 1245338896, issued on Sep 20, 2006. Check the license (Illinois 85001294, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John Jeffrey Williamson
- Credential
- P.A.
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 85001294 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1701 E College Ave, Bloomington, IL 61704
- Phone
- (309) 664-3422
- Enumerated
- Sep 20, 2006
- Record last updated
- Nov 19, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20090811000586); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 4,926 in Illinois → Look up another NPI →
Also registered at 1701 E College Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Renee Alwan Percell, P.A.-C.Physician Assistant1588653935
- Cynthia Anagnos, PA-CPhysician Assistant1558500579
- Stephen Belgrave, M.D.Family Medicine Physician1114951357
- Mary Biles, PT, MDTPhysical Therapist1003933342
- Heather Caldwell, LCSWClinical Social Worker1184097065
- Leslie Carmack, A.P.N.Nurse Practitioner1073760716
Verify John Jeffrey Williamson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 85001294Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average physician assistant in 2024
139 Medicare Part D claims for 81 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 61 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen42 claims
- Meloxicam41 claims
- Amoxicillin14 claims
- Tramadol Hcl14 claims
- Methylprednisolone11 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: $188.55
8 payments; by number, the most common kind was food and beverage; the largest payer was Ferring Pharmaceuticals Inc. The 64,719 providers of this specialty with any payment received $841.65 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 GroupBloomington, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Jeffrey Williamson among 4,926 physician assistant records in Illinois
John Jeffrey Williamson, P.A. is one of 4,926 physician assistant records with a practice address in Illinois. 82% 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 2% of them.
- NPI issued2006 · 2% of these records are older, 88% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1999 · median 2019 among the 3,407 with a school on file
- Record last updated2007 · 35% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
38 physician assistant records list a practice address in Bloomington
They are 38 of the 1,903 NPPES records with a practice address in Bloomington, and 4,926 physician assistant records in Illinois.
All 4,926 in Illinois → Every provider in Bloomington → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Renee Alwan Percell, P.A.-C.Bloomington, IL 617041588653935
- Cynthia Anagnos, PA-CBloomington, IL 617041558500579
- Alex Frantz, PABloomington, IL 617041801224605
- Megan Glenn, P.A.-C.Bloomington, IL 617041427328798
- Stefani Hagglund, PA-CBloomington, IL 617041275592578
- Alicia High, PA-CBloomington, IL 617041831269224
- Alexis Huss, PA-CBloomington, IL 617041598247520
- Teresa Mejorado, PA-CBloomington, IL 617041518118140
Common questions
What is John Jeffrey Williamson, P.A.'s NPI number?
John Jeffrey Williamson, P.A.'s National Provider Identifier (NPI) is 1245338896, issued on Sep 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Jeffrey Williamson, P.A. located?
The NPPES record lists a practice address at 1701 E College Ave, Bloomington, IL, 61704. Phone: (309) 664-3422. Providers update this record themselves, so call before visiting.
How can I verify John Jeffrey Williamson, P.A.'s license?
NPPES lists Illinois license number 85001294, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does John Jeffrey Williamson, P.A. prescribe under Medicare Part D?
In 2024, John Jeffrey Williamson, P.A. had 139 Medicare Part D claims for 81 beneficiaries; the average among physician assistant prescribers was 830. 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.