John Wilhelm, MD
Obstetrics & Gynecology Physician · Chicago, IL
John Wilhelm, MD is an obstetrics & gynecology physician with a practice address in Chicago, Illinois, and NPI 1992822399, issued on Mar 23, 2007. Check the license on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- John Wilhelm
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- Practice location
- 3600 W Fullerton Ave, Chicago, IL 60647
- Phone
- (773) 782-2800
- Enumerated
- Mar 23, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (773) 782-5049
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 2,062 in Illinois → Look up another NPI →
Also registered at 3600 W Fullerton Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Celia AtkinsonCounselor1699180281
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- Cesiah Banuelos, LCPCMental Health Counselor1417343666
- Maria Barbarasa, APNFamily Nurse Practitioner1255676656
Verify John Wilhelm in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional RegulationCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
22 Medicare Part D claims, against an average of 165 among the 28,733 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.
John Wilhelm among 2,062 obstetrics & gynecology physician records in Illinois
John Wilhelm, MD is one of 2,062 obstetrics & gynecology physician records with a practice address in Illinois. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 46% of them.
- NPI issued2007 · 46% of these records are older, 47% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2007 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
700 obstetrics & gynecology physician records list a practice address in Chicago
They are 700 of the 63,379 NPPES records with a practice address in Chicago, and 2,062 obstetrics & gynecology physician records in Illinois.
All 2,062 in Illinois → Every provider in Chicago → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Leticia Claridad, MDChicago, IL 606471043280621
- Lizzette Diaz-Phillips, M.DChicago, IL 606471780980326
- General Hood, M.D.Chicago, IL 606471497997274
- Ernest Nora, MDChicago, IL 606471689783227
- Sherry Nordstrom, MDChicago, IL 606471770530503
- Gregory Ursino, MDChicago, IL 606471619292547
- Vanessa Archil, M.D.Chicago, IL 606461285046888
- Raynelda Hidalgo, MDChicago, IL 606461508907726
Common questions
What is John Wilhelm, MD's NPI number?
John Wilhelm, MD's National Provider Identifier (NPI) is 1992822399, issued on Mar 23, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John Wilhelm, MD located?
The NPPES record lists a practice address at 3600 W Fullerton Ave, Chicago, IL, 60647. Phone: (773) 782-2800. Providers update this record themselves, so call before visiting.
How can I verify John Wilhelm, MD's license?
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 Wilhelm, MD prescribe under Medicare Part D?
In 2024, John Wilhelm, MD had 22 Medicare Part D claims; the average among obstetrics & gynecology physician prescribers was 165. 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.