Sean Patrick Mahoney, MD
Nephrology Physician · Chicago, IL
Sean Patrick Mahoney, MD is a nephrology physician with a practice address in Chicago, Illinois, and NPI 1548900863, issued on Apr 1, 2022. Check the license (Illinois 036.175406, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Sean Patrick Mahoney
- Credential
- MD
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 036.175406 IL
Self-reported in NPPES; status is on the state search - Practice location
- 251 E Huron St, Chicago, IL 60611
- Phone
- (312) 926-4880
- Enumerated
- Apr 1, 2022
- Record last updated
- Jun 18, 2025
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 572 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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Verify Sean Patrick Mahoney 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 036.175406Check 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 nephrology physician in 2024
77 Medicare Part D claims for 18 beneficiaries, against an average of 1,465 among the 10,986 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.
Sean Patrick Mahoney among 572 nephrology physician records in Illinois
Sean Patrick Mahoney, MD is one of 572 nephrology physician records with a practice address in Illinois. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 95% of them.
- NPI issued2022 · 95% of these records are older, 3% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileNo · 76% of these records are
- Record last updated2025 · 39% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in Illinois
There are 572 nephrology physician records in Illinois.
All 572 in Illinois → Every provider in Chicago → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Shubhada Ahya, MDChicago, IL 606111336138767
- Mohammed Javeed Ansari, M.D.Chicago, IL 606111487688131
- Daniel Battle, MDChicago, IL 606111457325037
- Eudora Eng, M.D.Chicago, IL 606111639261621
- John Friedewald, MDChicago, IL 606111508801093
- Lorenzo Gallon, MDChicago, IL 606111427093848
- Cybele Ghossein, MDChicago, IL 606111376588830
- Bing Ho, MDChicago, IL 606111881771731
Common questions
What is Sean Patrick Mahoney, MD's NPI number?
Sean Patrick Mahoney, MD's National Provider Identifier (NPI) is 1548900863, issued on Apr 1, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Sean Patrick Mahoney, MD located?
The NPPES record lists a practice address at 251 E Huron St, Chicago, IL, 60611. Phone: (312) 926-4880. Providers update this record themselves, so call before visiting.
How can I verify Sean Patrick Mahoney, MD's license?
NPPES lists Illinois license number 036.175406, 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 Sean Patrick Mahoney, MD prescribe under Medicare Part D?
In 2024, Sean Patrick Mahoney, MD had 77 Medicare Part D claims for 18 beneficiaries; the average among nephrology physician prescribers was 1,465. 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.