NPPES file of Aug 9, 2026

J. Nnaemeka Onwuta, M.D.

Pain Medicine (Anesthesiology) Physician · Elgin, IL

J. Nnaemeka Onwuta, M.D. is a pain medicine (anesthesiology) physician with a practice address in Elgin, Illinois, and NPI 1861445850, issued on May 18, 2006. Check the license (Illinois 036-086998, 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
1861445850
Name
J. Nnaemeka Onwuta
Credential
M.D.
Primary taxonomy
Pain Medicine (Anesthesiology) Physician 207LP2900X
License numbers
036-086998 IL
036086998 IL
Self-reported in NPPES; status is on the state search
Practice location
77 N Airlite St, Elgin, IL 60123
Phone
(847) 695-3200
Enumerated
May 18, 2006
Record last updated
May 21, 2018 (not updated in 8 years: call before relying on the address or phone)
Medicaid ID
036086998 IL
Medicare enrollment
Enrolled (PECOS I20070604000026); accepts Medicare assignment
Medical or professional school
University Of Pittsburgh School Of Medicine, 1991
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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8 nearest pain medicine (anesthesiology) physician records → All 203 in Illinois → Look up another NPI →

Also registered at 77 N Airlite St

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

  1. Amar AgadiAnatomic Pathology & Clinical Pathology Physician1407015415
  2. Mona Ahmed, M.D.Diagnostic Radiology Physician1912162900
  3. Trisha Atkins, P.A.Physician Assistant1306000765
  4. Corina Brandlin, PTAPhysical Therapy Assistant1225384852
  5. Catherine Britton Kuzel, M.D.Anatomic Pathology & Clinical Pathology Physician1700918406
  6. Suzanne Butler, NPPsychiatric/Mental Health Nurse Practitioner1063195931

Verify J. Nnaemeka Onwuta 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 036-086998    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.

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3.9 times the Medicare Part D claims of the average pain medicine (anesthesiology) physician in 2024

6,808 Medicare Part D claims for 479 beneficiaries, against an average of 1,750 among the 2,982 providers of this specialty who prescribed in Part D. Brand-name drugs were 3% of claims. 3,990 claims were for opioids.

  1. J. Onwuta6,808
  2. Specialty average1,750

Most prescribed

  1. Hydrocodone-Acetaminophen2,055 claims
  2. Gabapentin718 claims
  3. Oxycodone-Acetaminophen710 claims
  4. Oxycodone Hcl345 claims
  5. Cyclobenzaprine Hcl303 claims
  6. Pregabalin295 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.

Industry payments in 2024: $77.63

3 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 2,789 providers of this specialty with any payment received $3,225.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. J. Onwuta$77.63
  2. Specialty average$3,225.41

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Advocate Health And Hospitals CorporationBuffalo Grove, IL

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

J. Nnaemeka Onwuta among 203 pain medicine (anesthesiology) physician records in Illinois

J. Nnaemeka Onwuta, M.D. is one of 203 pain medicine (anesthesiology) physician records with a practice address in Illinois. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 14% of them.

  • NPI issued2006 · 14% of these records are older, 47% newer
  • In a Medicare fileYes · 76% of these records are
  • In the CMS Doctors and Clinicians fileYes · 71% of these records are
  • Graduated1991 · median 2002 among the 144 with a school on file
  • Record last updated2018 · 52% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207LP2900X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Pain Medicine (Anesthesiology) Physician providers in Illinois

There are 203 pain medicine (anesthesiology) physician records in Illinois.

All 203 in Illinois → Every provider in Elgin → Pain Medicine (Anesthesiology) Physician nationwide →

The 8 pain medicine (anesthesiology) physician records with the nearest ZIP codes

  1. Joanna Barclay, MDElgin, IL 601231932210978
  2. Sebastian Guman, M.D.Elgin, IL 601231871768077
  3. Roshina Khan, M.D.Elgin, IL 601231720616485
  4. John O'Hara, MDElgin, IL 601231811056559
  5. Christian Bautista, M.DElmhurst, IL 601261669401113
  6. George Fikaris, M.DElmhurst, IL 601261366484172
  7. John Girardot, MDElmhurst, IL 601261902912025
  8. Juozas Gurevicius, M.D.Elmhurst, IL 601261699880567

Common questions

What is J. Nnaemeka Onwuta, M.D.'s NPI number?

J. Nnaemeka Onwuta, M.D.'s National Provider Identifier (NPI) is 1861445850, issued on May 18, 2006. An NPI identifies a provider in billing; it is not a license.

Where is J. Nnaemeka Onwuta, M.D. located?

The NPPES record lists a practice address at 77 N Airlite St, Elgin, IL, 60123. Phone: (847) 695-3200. Providers update this record themselves, so call before visiting.

How can I verify J. Nnaemeka Onwuta, M.D.'s license?

NPPES lists Illinois license number 036-086998, 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 J. Nnaemeka Onwuta, M.D. prescribe under Medicare Part D?

In 2024, J. Nnaemeka Onwuta, M.D. had 6,808 Medicare Part D claims for 479 beneficiaries; the average among pain medicine (anesthesiology) physician prescribers was 1,750. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.