NPPES file of Aug 9, 2026

Marcus Larrieu, APN

Nurse Practitioner · Oak Lawn, IL

Marcus Larrieu, APN is a nurse practitioner with a practice address in Oak Lawn, Illinois, and NPI 1497314397, issued on Jun 13, 2019. Check the license (Illinois 209.019399, as entered in NPPES) with the Illinois board that licenses this profession; 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
1497314397
Name
Marcus Larrieu
Credential
APN
Primary taxonomy
Nurse Practitioner 363L00000X
License number
209.019399 IL
Self-reported in NPPES; status is on the state search
Practice location
10837 S Cicero Ave, Oak Lawn, IL 60453
Phone
(773) 636-7575
Enumerated
Jun 13, 2019
Record last updated
Jun 13, 2019 (not updated in 7 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20190924002428); accepts Medicare assignment
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 10837 S Cicero Ave

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

  1. Pierrot Abi Mansour, MDCardiovascular Disease Physician1285627166
  2. Bruce Abramowitz, M.D.,F.A.C.C.Cardiovascular Disease Physician1013918473
  3. Michelle Elkhatib, RN, FNP-BCFamily Nurse Practitioner1538933254
  4. Shrikar Iragavarapu, MDCardiovascular Disease Physician1215630520
  5. Rachel Jachim, APNFamily Nurse Practitioner1558020826
  6. Jeffrey Neiger, MDClinical Cardiac Electrophysiology Physician1275719072

Verify Marcus Larrieu in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Illinois board licenses this profession
    Search for license 209.019399
    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
Find the Illinois license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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85% fewer Medicare Part D claims than the average nurse practitioner in 2024

165 Medicare Part D claims for 121 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.

  1. Marcus Larrieu165
  2. Specialty average1,109

Most prescribed

  1. Azithromycin16 claims
  2. Fluticasone Propionate14 claims
  3. Nitrofurantoin Mono-Macro13 claims
  4. Cephalexin12 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 2 group practices

  1. Harvey Emergency Physicians PLLCCalumet City, IL
  2. Physicians Immediate Care North Chicago LLCBradley, IL

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

93 nurse practitioner records list a practice address in Oak Lawn

They are 93 of the 2,993 NPPES records with a practice address in Oak Lawn, and 4,892 nurse practitioner records in Illinois.

Other nurse practitioner records in Illinois

  1. Janice Abadilla, FNP-BCPeoria, IL1548157175
  2. Philomena AbebePark Ridge, IL1902780174
  3. Milagros Abellera, APNChicago, IL1528076239
  4. Edwina Abloh, APN-CNPSkokie, IL1689314098
  5. Sandra Abraham, CNPDwight, IL1982883245
  6. Sharon Abraham, APN-CNPArlington Heights, IL1396485884
  7. Hazel Acacio, APNPWauconda, IL1205471679
  8. Anthony Aceto, APRN, FNP-CSchaumburg, IL1891302956
  9. Francisco Acevedo, APRN, CNPMokena, IL1467446930
  10. Mina Acevedo, APRNGlenview, IL1972174688

Common questions

What is Marcus Larrieu, APN's NPI number?

Marcus Larrieu, APN's National Provider Identifier (NPI) is 1497314397, issued on Jun 13, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Marcus Larrieu, APN located?

The NPPES record lists a practice address at 10837 S Cicero Ave, Oak Lawn, IL, 60453. Phone: (773) 636-7575. Providers update this record themselves, so call before visiting.

How can I verify Marcus Larrieu, APN's license?

NPPES lists Illinois license number 209.019399, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.

How much does Marcus Larrieu, APN prescribe under Medicare Part D?

In 2024, Marcus Larrieu, APN had 165 Medicare Part D claims for 121 beneficiaries; the average among nurse practitioner prescribers was 1,109. 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.