William Gradishar, MD
Medical Oncology Physician · Chicago, IL
William Gradishar, MD is a medical oncology physician with a practice address in Chicago, Illinois, and NPI 1437187929, issued on Jun 30, 2006. Check the license (Illinois 036067208, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- William Gradishar
- Credential
- MD
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- 036067208 IL
Self-reported in NPPES; status is on the state search - Practice location
- 675 N Saint Clair St, Chicago, IL 60611
- Phone
- (312) 695-0990
- Enumerated
- Jun 30, 2006
- Record last updated
- Jul 17, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (312) 695-1106
- Medicare enrollment
- Enrolled (PECOS I20050308000117); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 1982
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 182 in Illinois → Look up another NPI →
Also registered at 675 N Saint Clair St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Mohammed Alghoul, M.D.Plastic Surgery Physician1932376746
- Sharon Allen, APRNAdult Health Nurse Practitioner1003849993
Verify William Gradishar 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 036067208Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2% fewer Medicare Part D claims than the average medical oncology physician in 2024
687 Medicare Part D claims for 188 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims.
Most prescribed
- Anastrozole300 claims
- Ibrance51 claims
- Tamoxifen Citrate51 claims
- Letrozole49 claims
- Exemestane46 claims
- Kisqali35 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.
The MIPS final score for 2023 (Medicare payment program): 94.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $43,827.74
34 payments; by number, the most common kind was consulting fee; the largest payer was Genentech USA, Inc. The 3,343 providers of this specialty with any payment received $11,773.47 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
- Northwestern Medical Faculty FoundationOak Brook, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Gradishar among 182 medical oncology physician records in Illinois
William Gradishar, MD is one of 182 medical oncology physician records with a practice address in Illinois. 83% 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 11% of them.
- NPI issued2006 · 11% of these records are older, 43% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated1982 · median 2000 among the 132 with a school on file
- Record last updated2009 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in Illinois
There are 182 medical oncology physician records in Illinois.
All 182 in Illinois → Every provider in Chicago → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Charles Bennett, MDChicago, IL 606111063488898
- Al Benson, MDChicago, IL 606111891761532
- Raymond Bergan, MDChicago, IL 606111871569640
- James Brandman, MDChicago, IL 606111710947882
- Daniel Bruetman, MDChicago, IL 606111972583417
- Lucio Di Nunno, M.D.Chicago, IL 606111639132343
- Mary Mulcahy, MDChicago, IL 606111306870837
- Jyoti Patel, MDChicago, IL 606111083649792
Common questions
What is William Gradishar, MD's NPI number?
William Gradishar, MD's National Provider Identifier (NPI) is 1437187929, issued on Jun 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Gradishar, MD located?
The NPPES record lists a practice address at 675 N Saint Clair St, Chicago, IL, 60611. Phone: (312) 695-0990. Providers update this record themselves, so call before visiting.
How can I verify William Gradishar, MD's license?
NPPES lists Illinois license number 036067208, 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 Gradishar, MD prescribe under Medicare Part D?
In 2024, William Gradishar, MD had 687 Medicare Part D claims for 188 beneficiaries; the average among medical oncology physician prescribers was 703. Part D covers Medicare prescriptions only.
What is William Gradishar, MD's MIPS final score?
The 2023 MIPS final score is 94.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.