Nkeiruka Onyenekwu, M.D.
NPI 1871739722 · Emergency Medicine Physician · San Antonio, TX
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nkeiruka Onyenekwu, M.D. is a Emergency Medicine Physician provider in San Antonio, TX (NPI 1871739722).
Provider details
- NPI number
- 1871739722
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- P3403 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
143 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 75 | $139 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 43 | $93 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 25 | $175 |
Typical Medicare-allowed amounts for these services range $93–$175 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 25 | — |
| Apixabanbrand: Eliquis | 25 | — |
| Atorvastatin Calcium | 24 | 12 |
| Meloxicam | 22 | — |
| Semaglutidebrand: Ozempic | 17 | — |
| Rosuvastatin Calcium | 17 | — |
| Levothyroxine Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-12-24
- Last updated
- 2017-09-27
Frequently asked questions
- What is Nkeiruka Onyenekwu's NPI number?
- Nkeiruka Onyenekwu's National Provider Identifier (NPI) is 1871739722, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nkeiruka Onyenekwu's specialty?
- Nkeiruka Onyenekwu is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nkeiruka Onyenekwu located?
- Nkeiruka Onyenekwu's practice location on file with NPPES is 4502 Medical Dr, San Antonio, TX 78229-4402.
- What is Nkeiruka Onyenekwu's phone number?
- The practice phone number listed in the NPPES registry for Nkeiruka Onyenekwu is (210) 358-2078.
- Does Nkeiruka Onyenekwu accept Medicare?
- Nkeiruka Onyenekwu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nkeiruka Onyenekwu's NPI active?
- Yes — Nkeiruka Onyenekwu's NPI (1871739722) is active in the NPPES registry as of the last update on 2017-09-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.