NPPES file of Aug 9, 2026

Erika Olson, MD

Psychiatry Physician · Oak Brook, IL

Erika Olson, MD is a psychiatry physician with a practice address in Oak Brook, Illinois, and NPI 1457746752, issued on Apr 2, 2015. Check the license (Illinois 036.148700, 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
1457746752
Name
Erika Olson
Credential
MD
Primary taxonomy
Psychiatry Physician 2084P0800X
License numbers
036.148700 IL
125067673 IL
Self-reported in NPPES; status is on the state search
Practice location
2021 Midwest RD Ste 202, Oak Brook, IL 60523
Phone
(630) 283-1319
Enumerated
Apr 2, 2015
Record last updated
May 14, 2024
Medicare enrollment
Enrolled (PECOS I20190731000831); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
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 2021 Midwest RD Ste 202

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

  1. Evan Deranja, M.D., PH.D.Psychiatry Physician1780849976

Verify Erika Olson 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 036.148700
    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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69% fewer Medicare Part D claims than the average psychiatry physician in 2024

307 Medicare Part D claims for 26 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.

  1. Erika Olson307
  2. Specialty average1,000

Most prescribed

  1. Quetiapine Fumarate37 claims
  2. Bupropion Xl28 claims
  3. Lamotrigine26 claims
  4. Clonazepam21 claims
  5. Duloxetine Hcl18 claims
  6. Fluoxetine Hcl18 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.

Erika Olson among 2,147 psychiatry physician records in Illinois

Erika Olson, MD is one of 2,147 psychiatry physician records with a practice address in Illinois. 69% 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 68% of them.

  • NPI issued2015 · 68% of these records are older, 30% newer
  • In a Medicare fileYes · 69% of these records are
  • In the CMS Doctors and Clinicians fileYes · 41% of these records are
  • Graduated2015 · median 2004 among the 877 with a school on file
  • Record last updated2024 · 53% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

18 psychiatry physician records list a practice address in Oak Brook

They are 18 of the 950 NPPES records with a practice address in Oak Brook, and 2,147 psychiatry physician records in Illinois.

The 8 psychiatry physician records with the nearest ZIP codes

  1. Mohammed Alam, MDOak Brook, IL 605231447549688
  2. Dima Arbach, M.D.Oak Brook, IL 605231760739114
  3. Thomas Byrne, MDOak Brook, IL 605231225047293
  4. Alexia Copenhaver, M.D.Oak Brook, IL 605231851825392
  5. Evan Deranja, M.D., PH.D.Oak Brook, IL 605231780849976
  6. Farozan Islam, DOOak Brook, IL 605231750426540
  7. Andrew Kowalkowski, M.D.Oak Brook, IL 605231154517951
  8. Kumar Moolayil, M.DOak Brook, IL 605231134215569

Common questions

What is Erika Olson, MD's NPI number?

Erika Olson, MD's National Provider Identifier (NPI) is 1457746752, issued on Apr 2, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Erika Olson, MD located?

The NPPES record lists a practice address at 2021 Midwest RD Ste 202, Oak Brook, IL, 60523. Phone: (630) 283-1319. Providers update this record themselves, so call before visiting.

How can I verify Erika Olson, MD's license?

NPPES lists Illinois license number 036.148700, 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 Erika Olson, MD prescribe under Medicare Part D?

In 2024, Erika Olson, MD had 307 Medicare Part D claims for 26 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.