Mark Ellis, MD
NPI 1003812744 · Pediatrics Physician · Eureka, CA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Ellis, MD is a Pediatrics Physician provider in Eureka, CA (NPI 1003812744).
Provider details
- NPI number
- 1003812744
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G65432 (CA)
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
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
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
Additional practice locations (2)
- 2800 Harris StEureka, CA 95503-4809Phone: (707) 445-8416Fax: (707) 445-4182
- 2800 Harris StEureka, CA 95503-4809Phone: (707) 445-8416Fax: (707) 445-4182
Registry dates
- Enumerated
- 2005-06-27
- Last updated
- 2018-03-17
Frequently asked questions
- What is Mark Ellis's NPI number?
- Mark Ellis's National Provider Identifier (NPI) is 1003812744, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Ellis's specialty?
- Mark Ellis is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Ellis located?
- Mark Ellis's practice location on file with NPPES is 2200 Tydd St, Eureka, CA 95501-1284.
- What is Mark Ellis's phone number?
- The practice phone number listed in the NPPES registry for Mark Ellis is (707) 269-7051.
- Does Mark Ellis accept Medicare?
- Mark Ellis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Ellis's NPI active?
- Yes — Mark Ellis's NPI (1003812744) is active in the NPPES registry as of the last update on 2018-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.