David Llewellyn, MD
NPI 1043281850 · Neurology Physician · Oceanside, CA
Enrolled with Medicare as Order and Referring Only - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Llewellyn, MD is a Neurology Physician provider in Oceanside, CA (NPI 1043281850).
Provider details
- NPI number
- 1043281850
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G144603 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
- 2006-01-30
- Last updated
- 2025-02-04
- Certified
- 2025-02-04
Frequently asked questions
- What is David Llewellyn's NPI number?
- David Llewellyn's National Provider Identifier (NPI) is 1043281850, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Llewellyn's specialty?
- David Llewellyn is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is David Llewellyn located?
- David Llewellyn's practice location on file with NPPES is 200 Mercy Circle, Oceanside, CA 92055.
- What is David Llewellyn's phone number?
- The practice phone number listed in the NPPES registry for David Llewellyn is (928) 649-7991.
- Does David Llewellyn accept Medicare?
- David Llewellyn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Llewellyn's NPI active?
- Yes — David Llewellyn's NPI (1043281850) is active in the NPPES registry as of the last update on 2025-02-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.