NPPES file of Aug 9, 2026

Mary Katherine Olive, M.D.

Pediatric Cardiology Physician · Chicago, IL

Mary Katherine Olive, M.D. is a pediatric cardiology physician with a practice address in Chicago, Illinois, and NPI 1538303854, issued on Apr 30, 2009. Check the license (Illinois 036.179674, 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
1538303854
Name
Mary Katherine Olive
Credential
M.D.
Primary taxonomy
Pediatric Cardiology Physician 2080P0202X
License numbers
036.179674 IL
Q3935 TX
Self-reported in NPPES; status is on the state search
Practice location
225 E Chicago Ave, Chicago, IL 60611
Phone
(312) 227-4000
Enumerated
Apr 30, 2009
Record last updated
May 19, 2026
Medicare enrollment
Enrolled (PECOS I20160907002118); accepts Medicare assignment
Medical or professional school
West Virginia University School Of Medicine, 2009
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. 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 Mary Katherine Olive 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 036.179674
    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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54% fewer Medicare Part D claims than the average pediatric cardiology physician in 2024

34 Medicare Part D claims, against an average of 74 among the 518 providers of this specialty who prescribed in Part D. Brand-name drugs were 68% of claims.

  1. Mary Olive34
  2. Specialty average74

Most prescribed

  1. Uptravi12 claims
  2. Opsumit11 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.

Bills Medicare through one group practice

  1. Regents OF The University OF MichiganAnn Arbor, MI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Mary Katherine Olive among 162 pediatric cardiology physician records in Illinois

Mary Katherine Olive, M.D. is one of 162 pediatric cardiology physician records with a practice address in Illinois. 60% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 54% of them.

  • NPI issued2009 · 54% of these records are older, 42% newer
  • In a Medicare fileYes · 60% of these records are
  • In the CMS Doctors and Clinicians fileYes · 52% of these records are
  • Graduated2009 · median 2005 among the 84 with a school on file
  • Record last updated2026 · 27% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0202X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Pediatric Cardiology Physician providers in Illinois

There are 162 pediatric cardiology physician records in Illinois.

The 8 pediatric cardiology physician records with the nearest ZIP codes

  1. Stuart Berger, MDChicago, IL 606111811948268
  2. Michael Carr, M.D.Chicago, IL 606111285770925
  3. Amanda Hauck, M.D.Chicago, IL 606111124248067
  4. Pei-Ni Jone, MDChicago, IL 606111962629600
  5. Paul Kim, M.D.Chicago, IL 606111265471312
  6. Peter Koenig, M.D.Chicago, IL 606111922114297
  7. Sulekha Kumar, MDChicago, IL 606111184686990
  8. Amy Lay, M.D.Chicago, IL 606111407075435

Common questions

What is Mary Katherine Olive, M.D.'s NPI number?

Mary Katherine Olive, M.D.'s National Provider Identifier (NPI) is 1538303854, issued on Apr 30, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Mary Katherine Olive, M.D. located?

The NPPES record lists a practice address at 225 E Chicago Ave, Chicago, IL, 60611. Phone: (312) 227-4000. Providers update this record themselves, so call before visiting.

How can I verify Mary Katherine Olive, M.D.'s license?

NPPES lists Illinois license number 036.179674, 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 Mary Katherine Olive, M.D. prescribe under Medicare Part D?

In 2024, Mary Katherine Olive, M.D. had 34 Medicare Part D claims; the average among pediatric cardiology physician prescribers was 74. 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.