William Lee Chang
Physician Assistant · Pontiac, IL
William Lee Chang is a physician assistant with a practice address in Pontiac, Illinois, and NPI 1023326121, issued on Sep 23, 2010. Check the license with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Lee Chang
- Primary taxonomy
- Physician Assistant 363A00000X
- Practice location
- 2500 W Reynolds St, Pontiac, IL 61764
- Phone
- (815) 844-4062
- Enumerated
- Sep 23, 2010
- Record last updated
- Sep 23, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (815) 844-4962
- Medicare enrollment
- Enrolled (PECOS I20131125001344); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 2500 W Reynolds St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nabila AshrafHospice and Palliative Medicine (Internal Medicine) Physician1730676099
- Catherine BachtoldNurse Practitioner1376926832
- Erin BakerPhysical Therapist1154868685
- Haiven Baker, OTD; OTR/LOccupational Therapist1285500777
- Adair BartosikPhysical Therapist1982140497
- Brittany Bursott, APNFamily Nurse Practitioner1699325514
Verify William Lee Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average physician assistant in 2024
170 Medicare Part D claims for 110 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 116 claims were for opioids.
Most prescribed
- Oxycodone-Acetaminophen54 claims
- Oxycodone Hcl41 claims
- Meloxicam11 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
- Multicare Health SystemTacoma, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
9 physician assistant records list a practice address in Pontiac
They are 9 of the 266 NPPES records with a practice address in Pontiac, and 4,926 physician assistant records in Illinois.
All 9 in Pontiac → All 4,926 in Illinois → Every provider in Pontiac →
Other physician assistant records in Illinois
- Brooke Aarhus, PA-CPark Ridge, IL1760985469
- Sana Abbasi, PACarol Stream, IL1831803295
- Susan Abbinanti, PA-CElk Grove Village, IL1679647358
- Katheryn Abbott, PASchaumburg, IL1356842082
- Noor Abdelrahman, PA-CChicago, IL1851012413
- Amer Abdulghafoor, MSW, MS, PA-CChicago, IL1619401718
- Kazuko Abe, P.A.Chicago, IL1881840783
- Greta Abel, PA-CWheaton, IL1174844096
- Derrik AbellAnna, IL1821618471
- Jeanine Aberbook, PA-CChicago, IL1518664176
Common questions
What is William Lee Chang's NPI number?
William Lee Chang's National Provider Identifier (NPI) is 1023326121, issued on Sep 23, 2010. An NPI identifies a provider in billing; it is not a license.
Where is William Lee Chang located?
The NPPES record lists a practice address at 2500 W Reynolds St, Pontiac, IL, 61764. Phone: (815) 844-4062. Providers update this record themselves, so call before visiting.
How can I verify William Lee Chang's license?
Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does William Lee Chang prescribe under Medicare Part D?
In 2024, William Lee Chang had 170 Medicare Part D claims for 110 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.