Christopher Day, MD
NPI 1184121253 · Pediatrics Physician · National City, CA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christopher Day, MD is a Pediatrics Physician provider in National City, CA (NPI 1184121253).
Provider details
- NPI number
- 1184121253
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A163862 (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
8 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 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 (1)
- 133 W Main St Ste 100El Cajon, CA 92020-3325Phone: (619) 401-0404
Registry dates
- Enumerated
- 2018-04-06
- Last updated
- 2023-01-09
- Certified
- 2023-01-09
Frequently asked questions
- What is Christopher Day's NPI number?
- Christopher Day's National Provider Identifier (NPI) is 1184121253, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christopher Day's specialty?
- Christopher Day is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Christopher Day located?
- Christopher Day's practice location on file with NPPES is 1000 Euclid Ave, National City, CA 91950-3856.
- What is Christopher Day's phone number?
- The practice phone number listed in the NPPES registry for Christopher Day is (619) 515-2399.
- Does Christopher Day accept Medicare?
- Christopher Day is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christopher Day's NPI active?
- Yes — Christopher Day's NPI (1184121253) is active in the NPPES registry as of the last update on 2023-01-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.