NPPES file of Aug 9, 2026

Tara Diederich Gerou, D.C.

Chiropractor · Oak Park, IL

Tara Diederich Gerou, D.C. is a chiropractor with a practice address in Oak Park, Illinois, and NPI 1801191218, issued on Jan 14, 2011. Check the license (Illinois 038.011866, as entered in NPPES) with the Illinois board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1801191218
Name
Tara Diederich Gerou
Credential
D.C.
Primary taxonomy
Chiropractor 111N00000X
License number
038.011866 IL
Self-reported in NPPES; status is on the state search
Practice location
1001 Madison St, Oak Park, IL 60302
Phone
(773) 680-4743
Enumerated
Jan 14, 2011
Record last updated
Jan 14, 2011 (not updated in 15 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20110616000492); accepts Medicare assignment
Medical or professional school
National College Of Chiropractic, 2010
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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Verify Tara Diederich Gerou 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 038.011866
    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

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Tara Diederich Gerou among 4,524 chiropractor records in Illinois

Tara Diederich Gerou, D.C. is one of 4,524 chiropractor records with a practice address in Illinois. 17% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2011, is newer than 65% of them.

  • NPI issued2011 · 65% of these records are older, 32% newer
  • In a Medicare fileNo · 17% of these records are
  • In the CMS Doctors and Clinicians fileYes · 42% of these records are
  • Graduated2010 · median 2004 among the 1,912 with a school on file
  • Record last updated2011 · 77% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 111N00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

35 chiropractor records list a practice address in Oak Park

They are 35 of the 2,307 NPPES records with a practice address in Oak Park, and 4,524 chiropractor records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

The 8 chiropractor records with the nearest ZIP codes

  1. Jill Aardema, D.C.Oak Park, IL 603021063508497
  2. John Cantu, D.C.Oak Park, IL 603021861435216
  3. Daryl Davis, DCOak Park, IL 603021356306088
  4. Jill Dortch, D.C.Oak Park, IL 603021073533691
  5. Robert Fischer, DCOak Park, IL 603021437218625
  6. Thomas Freeberg, DCOak Park, IL 603021467586594
  7. John Hagen, D.C.Oak Park, IL 603021245307552
  8. Jerry Hutchison, D.C.Oak Park, IL 603021700900222

Common questions

What is Tara Diederich Gerou, D.C.'s NPI number?

Tara Diederich Gerou, D.C.'s National Provider Identifier (NPI) is 1801191218, issued on Jan 14, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Tara Diederich Gerou, D.C. located?

The NPPES record lists a practice address at 1001 Madison St, Oak Park, IL, 60302. Phone: (773) 680-4743. Providers update this record themselves, so call before visiting.

How can I verify Tara Diederich Gerou, D.C.'s license?

NPPES lists Illinois license number 038.011866, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity 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. 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.