Ndidi Onyejiaka, M.D.
NPI 1619111432 · Sports Medicine (Psychiatry & Neurology) Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ndidi Onyejiaka, M.D. is a Sports Medicine (Psychiatry & Neurology) Physician provider in Chicago, IL (NPI 1619111432).
Provider details
- NPI number
- 1619111432
- Entity type
- Individual
- Primary specialty
- Sports Medicine (Psychiatry & Neurology) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 036.135051 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
- Pediatrics Physician208000000X
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Bupropion Hclbrand: Bupropion Xl | 27 |
| Lamotrigine | 18 |
| Fluoxetine Hcl | 17 |
| Duloxetine Hcl | 14 |
| Alprazolam | 13 |
| Dextroamphetamine/Amphetaminebrand: Dextroamphetamine-Amphet Er | 12 |
| Buspirone Hcl | 11 |
| Zolpidem Tartrate | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-04-23
- Last updated
- 2016-03-31
Frequently asked questions
- What is Ndidi Onyejiaka's NPI number?
- Ndidi Onyejiaka's National Provider Identifier (NPI) is 1619111432, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ndidi Onyejiaka's specialty?
- Ndidi Onyejiaka is listed in the NPPES registry with a primary specialty of Sports Medicine (Psychiatry & Neurology) Physician (Allopathic & Osteopathic Physicians).
- Where is Ndidi Onyejiaka located?
- Ndidi Onyejiaka's practice location on file with NPPES is 8 S Michigan Ave, Chicago, IL 60603-3357.
- What is Ndidi Onyejiaka's phone number?
- The practice phone number listed in the NPPES registry for Ndidi Onyejiaka is (312) 283-3456.
- Does Ndidi Onyejiaka accept Medicare?
- Ndidi Onyejiaka is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ndidi Onyejiaka's NPI active?
- Yes — Ndidi Onyejiaka's NPI (1619111432) is active in the NPPES registry as of the last update on 2016-03-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.