William Patrick Zeller, M.D.
Pediatric Endocrinology Physician · Wheaton, IL
William Patrick Zeller, M.D. is a pediatric endocrinology physician with a practice address in Wheaton, Illinois, and NPI 1699738922, issued on Apr 8, 2006. Check the license (Illinois 036-057718, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- William Patrick Zeller
- Credential
- M.D.
- Primary taxonomy
- Pediatric Endocrinology Physician 2080P0205X
- License number
- 036-057718 IL
Self-reported in NPPES; status is on the state search - Practice location
- 2001 N Gary Ave, Wheaton, IL 60187
- Phone
- (630) 416-4501
- Enumerated
- Apr 8, 2006
- Record last updated
- Jun 21, 2022
- Fax
- (630) 416-4504
- Entity
- Type 1 · individual
8 nearest pediatric endocrinology physician records → All 75 in Illinois → Look up another NPI →
Also registered at 2001 N Gary Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jon Aagaard, MDFamily Medicine Physician1750496923
- Steven Armbrust, MDFamily Medicine Physician1851406037
- Roy Betti, M.D.Pediatrics Physician1831123801
- Tijana Bryan, MMS, PA-CMedical Physician Assistant1063924736
- Joy Castrovillari, M.D.Pediatrics Physician1053576686
- Carrie Zimmer, M.D.Pediatric Endocrinology Physician1942467246
Verify William Patrick Zeller 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 036-057718Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average pediatric endocrinology physician in 2024
17 Medicare Part D claims, against an average of 105 among the 386 providers of this specialty who prescribed in Part D.
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: $399.83
7 payments; by number, the most common kind was food and beverage; the largest payer was Ascensia Diabetes Care Us Inc. The 931 providers of this specialty with any payment received $4,382.94 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.
William Patrick Zeller among 75 pediatric endocrinology physician records in Illinois
William Patrick Zeller, M.D. is one of 75 pediatric endocrinology physician records with a practice address in Illinois. 56% 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 3% of them.
- NPI issued2006 · 3% of these records are older, 72% newer
- In a Medicare fileYes · 56% of these records are
- In the CMS Doctors and Clinicians fileNo · 24% of these records are
- Record last updated2022 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0205X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Endocrinology Physician providers in Illinois
There are 75 pediatric endocrinology physician records in Illinois.
All 75 in Illinois → Every provider in Wheaton → Pediatric Endocrinology Physician nationwide →
The 8 pediatric endocrinology physician records with the nearest ZIP codes
- Shruti Fadia, MDWheaton, IL 601871669634770
- Jennifer May, M.D.Wheaton, IL 601871003267204
- Sonalee Ravi, MDWheaton, IL 601871710320775
- Carrie Zimmer, M.D.Wheaton, IL 601871942467246
- Justin DeyWinfield, IL 601901306342258
- Mary McCauley, M.D.Winfield, IL 601901396163671
- Tseghai Berhe, MDSchaumburg, IL 601931982678207
- Kristen Bishop, M.D.Hoffman Estates, IL 601691326297292
Common questions
What is William Patrick Zeller, M.D.'s NPI number?
William Patrick Zeller, M.D.'s National Provider Identifier (NPI) is 1699738922, issued on Apr 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Patrick Zeller, M.D. located?
The NPPES record lists a practice address at 2001 N Gary Ave, Wheaton, IL, 60187. Phone: (630) 416-4501. Providers update this record themselves, so call before visiting.
How can I verify William Patrick Zeller, M.D.'s license?
NPPES lists Illinois license number 036-057718, 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 William Patrick Zeller, M.D. prescribe under Medicare Part D?
In 2024, William Patrick Zeller, M.D. had 17 Medicare Part D claims; the average among pediatric endocrinology physician prescribers was 105. 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.