Liam O'Neill, MD
NPI 1790434819 · Student in an Organized Health Care Education/Training Program · Los Angeles, CA
Enrolled with Medicare as Order and Referring Only - Interventional Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Liam O'Neill, MD is a Student in an Organized Health Care Education/Training Program provider in Los Angeles, CA (NPI 1790434819).
Provider details
- NPI number
- 1790434819
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2022-03-23
- Last updated
- 2022-07-25
- Certified
- 2022-03-23
Frequently asked questions
- What is Liam O'Neill's NPI number?
- Liam O'Neill's National Provider Identifier (NPI) is 1790434819, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Liam O'Neill's specialty?
- Liam O'Neill is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Liam O'Neill located?
- Liam O'Neill's practice location on file with NPPES is 4733 W Sunset Blvd Fl 3, Los Angeles, CA 90027-6021.
- What is Liam O'Neill's phone number?
- The practice phone number listed in the NPPES registry for Liam O'Neill is (928) 230-5375.
- Does Liam O'Neill accept Medicare?
- Liam O'Neill is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Liam O'Neill's NPI active?
- Yes — Liam O'Neill's NPI (1790434819) is active in the NPPES registry as of the last update on 2022-07-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.