Patrick Joseph O'Shea, MD
Hematology & Oncology Physician · Chicago, IL
Patrick Joseph O'Shea, MD is a hematology & oncology physician with a practice address in Chicago, Illinois, and NPI 1558065003, issued on Mar 29, 2023. Check the license (Illinois 1558065003, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Patrick Joseph O'Shea
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 1558065003 IL
Self-reported in NPPES; status is on the state search - Practice location
- 251 E Huron St, Chicago, IL 60611
- Phone
- (312) 926-2000
- Enumerated
- Mar 29, 2023
- Record last updated
- Jun 9, 2026
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 666 in Illinois → Look up another NPI →
Also registered at 251 E Huron St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Dena Abdelhameed, PHARM.D.Nuclear Pharmacist1073954301
Verify Patrick Joseph O'Shea 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 1558065003Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
47 Medicare Part D claims for 18 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 30% of 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.
Patrick Joseph O'Shea among 666 hematology & oncology physician records in Illinois
Patrick Joseph O'Shea, MD is one of 666 hematology & oncology physician records with a practice address in Illinois. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 98% of them.
- NPI issued2023 · 98% of these records are older, under 1% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2026 · 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 207RH0003X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Illinois
There are 666 hematology & oncology physician records in Illinois.
All 666 in Illinois → Every provider in Chicago → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Elizabeth Eklund, MDChicago, IL 606111598861205
- Lisa Flaum, MDChicago, IL 606111740261262
- Leo Gordon, MDChicago, IL 606111821028499
- Jochen Lorch, M.D.Chicago, IL 606111518913094
- Daniela Matei, M.D.Chicago, IL 606111558327486
- Hidayatullah Munshi, MDChicago, IL 606111437258340
- Yu Oyama, MDChicago, IL 606111790715472
- Adam Petrich, MDChicago, IL 606111407899198
Common questions
What is Patrick Joseph O'Shea, MD's NPI number?
Patrick Joseph O'Shea, MD's National Provider Identifier (NPI) is 1558065003, issued on Mar 29, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Patrick Joseph O'Shea, MD located?
The NPPES record lists a practice address at 251 E Huron St, Chicago, IL, 60611. Phone: (312) 926-2000. Providers update this record themselves, so call before visiting.
How can I verify Patrick Joseph O'Shea, MD's license?
NPPES lists Illinois license number 1558065003, 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 Patrick Joseph O'Shea, MD prescribe under Medicare Part D?
In 2024, Patrick Joseph O'Shea, MD had 47 Medicare Part D claims for 18 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.