NPPES file of Aug 9, 2026

Sean Delacey, M.D.

Pediatric Endocrinology Physician · Chicago, IL

Sean Delacey, M.D. is a pediatric endocrinology physician with a practice address in Chicago, Illinois, and NPI 1558758482, issued on Apr 17, 2015. Check the license (Illinois 036148938, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1558758482
Name
Sean Delacey
Credential
M.D.
Primary taxonomy
Pediatric Endocrinology Physician 2080P0205X
License number
036148938 IL
Self-reported in NPPES; status is on the state search
Practice location
225 E Chicago Ave, Chicago, IL 60611
Phone
(312) 227-6090
Enumerated
Apr 17, 2015
Record last updated
May 17, 2022
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 225 E Chicago Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Jasmene Abernathy, MDStudent in an Organized Health Care Education/Training Program1881454957
  2. Tamkeen Abreu, PHARMD, BCPSPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1366888653
  3. Matthew Abts, MDPediatric Pulmonology Physician1588989750
  4. Samuel AccordinoStudent in an Organized Health Care Education/Training Program1194525204
  5. Carly Adajian, DDSDentist1184373029
  6. Julie Adams, RDRegistered Dietitian1417569153

Verify Sean Delacey in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
    Search for license 036148938
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Illinois license search

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51% fewer Medicare Part D claims than the average pediatric endocrinology physician in 2024

51 Medicare Part D claims, against an average of 105 among the 386 providers of this specialty who prescribed in Part D. Brand-name drugs were 82% of claims.

  1. Sean Delacey51
  2. Specialty average105

Most prescribed

  1. Humalog Kwikpen U-20019 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.

Industry payments in 2024: $476.54

3 payments; by number, the most common kind was food and beverage; the largest payer was Beta Bionics, 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.

  1. Sean Delacey$476.54
  2. Specialty average$4,382.94

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Sean Delacey among 75 pediatric endocrinology physician records in Illinois

Sean Delacey, 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 2015, is newer than 79% of them.

  • NPI issued2015 · 79% of these records are older, 17% 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.

The 8 pediatric endocrinology physician records with the nearest ZIP codes

  1. Apoorva Aekka, MDChicago, IL 606111962939579
  2. Naomi Fogel, MDChicago, IL 606111346436516
  3. Reema Habiby, M.D.Chicago, IL 606111033291182
  4. Jami Josefson, M.D.Chicago, IL 606111174695571
  5. Ellen Kim, MDChicago, IL 606111891709440
  6. Juan Lado, MDChicago, IL 606111972891216
  7. Tatiana McIntyreChicago, IL 606111225617947
  8. Jennifer Miller, MDChicago, IL 606111447261524

Common questions

What is Sean Delacey, M.D.'s NPI number?

Sean Delacey, M.D.'s National Provider Identifier (NPI) is 1558758482, issued on Apr 17, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Sean Delacey, M.D. located?

The NPPES record lists a practice address at 225 E Chicago Ave, Chicago, IL, 60611. Phone: (312) 227-6090. Providers update this record themselves, so call before visiting.

How can I verify Sean Delacey, M.D.'s license?

NPPES lists Illinois license number 036148938, 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 Delacey, M.D. prescribe under Medicare Part D?

In 2024, Sean Delacey, M.D. had 51 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.