Cornelius Oneill, M.D.
NPI 1962420257 · Internal Medicine Physician · Jackson, MS
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cornelius Oneill, M.D. is a Internal Medicine Physician provider in Jackson, MS (NPI 1962420257).
Provider details
- NPI number
- 1962420257
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 09997 (MS)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-17
- Last updated
- 2007-07-08
Frequently asked questions
- What is Cornelius Oneill's NPI number?
- Cornelius Oneill's National Provider Identifier (NPI) is 1962420257, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cornelius Oneill's specialty?
- Cornelius Oneill is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Cornelius Oneill located?
- Cornelius Oneill's practice location on file with NPPES is 1500 E Woodrow Wilson Ave, Jackson, MS 39216-5116.
- What is Cornelius Oneill's phone number?
- The practice phone number listed in the NPPES registry for Cornelius Oneill is (601) 362-4471.
- Does Cornelius Oneill accept Medicare?
- Cornelius Oneill is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Cornelius Oneill's NPI active?
- Yes — Cornelius Oneill's NPI (1962420257) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.