NPPES file of Aug 9, 2026

Nene Takahashi, DO

Psychiatry Physician · Oak Brook, IL

Nene Takahashi, DO is a psychiatry physician with a practice address in Oak Brook, Illinois, and NPI 1871242420, issued on Mar 21, 2022. Check the license (Illinois 125080548, 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
1871242420
Name
Nene Takahashi
Credential
DO
Primary taxonomy
Psychiatry Physician 2084P0800X
License numbers
125080548 IL
036172044 IL
Self-reported in NPPES; status is on the state search
Practice location
600 W 22ND St Ste 260, Oak Brook, IL 60523
Phone
(331) 291-8522
Enumerated
Mar 21, 2022
Record last updated
Jul 23, 2026
Fax
(872) 345-0298
Medicare enrollment
Enrolled (PECOS I20250312002675); 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.
Download card Updates feed

Also registered at 600 W 22ND St Ste 260

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

  1. Heather RigneyPsychiatric/Mental Health Nurse Practitioner1700731247

Verify Nene Takahashi 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 125080548
    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

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

Is this page about you? You can ask us to correct, restrict or remove it: how.

88% fewer Medicare Part D claims than the average psychiatry physician in 2024

116 Medicare Part D claims for 21 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.

  1. Nene Takahashi116
  2. Specialty average1,000

Most prescribed

  1. Hydroxyzine Hcl16 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. Mugen Psychiatry LLCChicago, IL

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

Nene Takahashi among 2,147 psychiatry physician records in Illinois

Nene Takahashi, DO 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 2022, is newer than 88% of them.

  • NPI issued2022 · 88% of these records are older, 9% newer
  • In a Medicare fileYes · 69% of these records are
  • In the CMS Doctors and Clinicians fileYes · 41% of these records are
  • Graduated2022 · median 2004 among the 877 with a school on file
  • Record last updated2026 · 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 Nene Takahashi, DO's NPI number?

Nene Takahashi, DO's National Provider Identifier (NPI) is 1871242420, issued on Mar 21, 2022. An NPI identifies a provider in billing; it is not a license.

Where is Nene Takahashi, DO located?

The NPPES record lists a practice address at 600 W 22ND St Ste 260, Oak Brook, IL, 60523. Phone: (331) 291-8522. Providers update this record themselves, so call before visiting.

How can I verify Nene Takahashi, DO's license?

NPPES lists Illinois license number 125080548, 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 Nene Takahashi, DO prescribe under Medicare Part D?

In 2024, Nene Takahashi, DO had 116 Medicare Part D claims for 21 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.