Onyinye Iweala, MD, PHD
NPI 1942520416 · Allergy & Immunology Physician · Chapel Hill, NC
Enrolled with Medicare as Practitioner - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Onyinye Iweala, MD, PHD is a Allergy & Immunology Physician provider in Chapel Hill, NC (NPI 1942520416).
Provider details
- NPI number
- 1942520416
- Entity type
- Individual
- Primary specialty
- Allergy & Immunology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Female
- Sole proprietor
- No
- License
- L-244874 (MA)
Specialties & taxonomies
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 tenure25% of score
16 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
107 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 48 | $15 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 43 | $109 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 16 | $155 |
Typical Medicare-allowed amounts for these services range $15–$155 (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 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omalizumabbrand: Xolair | 74 | 11 |
| Epinephrine | 52 | 24 |
| Hydroxyzine Hcl | 39 | — |
| Immun Glob G(igg)/Pro/Iga 0-50brand: Hizentra | 38 | — |
| Cromolyn Sodium | 32 | 11 |
| Prednisone | 30 | 11 |
| Famotidine | 28 | — |
| Hydroxychloroquine Sulfate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$105 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- Unc Hospitals101 Manning DriveChapel Hill, NC 27514Phone: (984) 974-1000Fax: (919) 962-5478
Registry dates
- Enumerated
- 2010-06-08
- Last updated
- 2018-08-09
Frequently asked questions
- What is Onyinye Iweala's NPI number?
- Onyinye Iweala's National Provider Identifier (NPI) is 1942520416, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Onyinye Iweala's specialty?
- Onyinye Iweala is listed in the NPPES registry with a primary specialty of Allergy & Immunology Physician (Allopathic & Osteopathic Physicians).
- Where is Onyinye Iweala located?
- Onyinye Iweala's practice location on file with NPPES is Unc Allergy and Immunology Clinic, Chapel Hill, NC 27517.
- What is Onyinye Iweala's phone number?
- The practice phone number listed in the NPPES registry for Onyinye Iweala is (984) 974-2645.
- Does Onyinye Iweala accept Medicare?
- Onyinye Iweala is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Onyinye Iweala's NPI active?
- Yes — Onyinye Iweala's NPI (1942520416) is active in the NPPES registry as of the last update on 2018-08-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.