NPPES file of Aug 9, 2026

Erik Michael Allison, D.O.

Emergency Medicine Physician · Olympia Fields, IL

Erik Michael Allison, D.O. is an emergency medicine physician with a practice address in Olympia Fields, Illinois, and NPI 1821309113, issued on Jul 1, 2010. Check the license (Illinois 036.125422, 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
1821309113
Name
Erik Michael Allison
Credential
D.O.
Primary taxonomy
Emergency Medicine Physician 207P00000X
License numbers
036.125422 IL
34C.000160 OH
Self-reported in NPPES; status is on the state search
Practice location
20201 Crawford Ave, Olympia Fields, IL 60461
Phone
(708) 747-4000
Enumerated
Jul 1, 2010
Record last updated
Aug 28, 2023
Medicare enrollment
Enrolled (PECOS I20260318002661); accepts Medicare assignment
Medical or professional school
Midwestern University, Chicago College Of Osteopathic Med, 2007
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 20201 Crawford Ave

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

  1. Marwa Abdul BasithStudent in an Organized Health Care Education/Training Program1215870654
  2. Veronica Abegunde, MDHospitalist Physician1740500826
  3. Amir Abusharif, DOStudent in an Organized Health Care Education/Training Program1619663986
  4. Gremah Adam Aboubacar, DOStudent in an Organized Health Care Education/Training Program1619662392
  5. Tejaswini Addanki, DOStudent in an Organized Health Care Education/Training Program1306589163
  6. Saria Adnan Sultan, DOInternal Medicine Physician1679216196

Verify Erik Michael Allison 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 036.125422
    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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50% fewer Medicare Part D claims than the average emergency medicine physician in 2024

112 Medicare Part D claims for 83 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 26 claims were for opioids.

  1. Erik Allison112
  2. Specialty average226

Most prescribed

  1. Hydrocodone-Acetaminophen18 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. Ies ER Oklahoma LLCTulsa, OK

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

Erik Michael Allison among 3,291 emergency medicine physician records in Illinois

Erik Michael Allison, D.O. is one of 3,291 emergency medicine physician records with a practice address in Illinois. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 47% of them.

  • NPI issued2010 · 47% of these records are older, 50% newer
  • In a Medicare fileYes · 80% of these records are
  • In the CMS Doctors and Clinicians fileYes · 57% of these records are
  • Graduated2007 · median 2012 among the 1,867 with a school on file
  • Record last updated2023 · 47% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

58 emergency medicine physician records list a practice address in Olympia Fields

They are 58 of the 684 NPPES records with a practice address in Olympia Fields, and 3,291 emergency medicine physician records in Illinois.

The 8 emergency medicine physician records with the nearest ZIP codes

  1. April Brill, D.O.Olympia Fields, IL 604611396984324
  2. Christopher Colbert, DOOlympia Fields, IL 604611255444915
  3. Christina Deangelis, D.O.Olympia Fields, IL 604611942449715
  4. Sarah Green, DOOlympia Fields, IL 604611407849938
  5. Thomas Green, DOOlympia Fields, IL 604611689668808
  6. Brian Haag, M.D.Olympia Fields, IL 604611790732949
  7. Joanna Jackson, D.O.Olympia Fields, IL 604611841430139
  8. Martha Kelley, D.O.Olympia Fields, IL 604611942279252

Common questions

What is Erik Michael Allison, D.O.'s NPI number?

Erik Michael Allison, D.O.'s National Provider Identifier (NPI) is 1821309113, issued on Jul 1, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Erik Michael Allison, D.O. located?

The NPPES record lists a practice address at 20201 Crawford Ave, Olympia Fields, IL, 60461. Phone: (708) 747-4000. Providers update this record themselves, so call before visiting.

How can I verify Erik Michael Allison, D.O.'s license?

NPPES lists Illinois license number 036.125422, 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 Erik Michael Allison, D.O. prescribe under Medicare Part D?

In 2024, Erik Michael Allison, D.O. had 112 Medicare Part D claims for 83 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.