CHRISTOPHER MICHAEL DAY MD
NPI 1184121253
Pediatrics in National City, CA

Q: What is Christopher Day's NPI number?

The NPI number for Christopher Day is 1184121253. It was assigned to this individual provider in the NPPES registry on April 6, 2018.

Q: What is Christopher Day's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Q: When was this NPI record last updated?

The NPPES record for Christopher Day was last updated on January 9, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since April 06, 2018PECOS Enrolled

1000 EUCLID AVE, NATIONAL CITY, CA 91950(619) 515-2399 Get Directions Write a Review

NPPES record last updated: January 9, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jan 9, 2023, Jun 28, 2021, Jun 25, 2021 (3 updates tracked since 2021).

On this page

About Christopher Michael Day Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

CHRISTOPHER MICHAEL DAY MD (NPI 1184121253) is an individual pediatrics provider in National City, California, licensed in California (A163862) and active in the NPI registry since April 2018. He is enrolled in Medicare PECOS and maintains a secondary practice location in El Cajon.

NPPES Registry Identity

NPI1184121253

Entity TypeIndividualMale

Primary Taxonomy208000000X

Provider Legal NameCHRISTOPHER MICHAEL DAYCredential: MD

Location Address1000 EUCLID AVENational City, CA 91950-3856

Mailing Address823 Gateway Center WaySan Diego, CA 92102-4541 · (619) 515-2300

Phone(619) 515-2399

Sole ProprietorNo

Enumeration DateApril 6, 2018

Last NPPES UpdateJanuary 9, 20233 updates tracked since enumeration

NPPES CertifiedJanuary 9, 2023

✔ NPI 1184121253 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians

Taxonomy Code208000000X

License✔ Licensed in CA · A163862

Definition

A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

1000 EUCLID AVE, National City, CA 91950

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Secondary Practice Location 1

Location 1133 W Main St Ste 100El Cajon, CA 92020-3325 · Phone (619) 401-0404

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Christopher Michael Day Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Christopher Day reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Family Health Centers Of San Diego Inc

2.2 mi

Federally Qualified Health Center (FQHC)

4725 MARKET ST
San Diego, CA 92102

Reassigned Medicare billing, California enrollment
1,100 clinicians in this Medicare group

NPI 1982747671 (619) 515-2326

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91950 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$94.87 typical visit price

range $62.10 – $184.71

Typical copayment $23.71 (range $15.52 – $46.17)

Most-billed visit code 99203

Established Patient

$108.42 typical visit price

range $20.62 – $151.42

Typical copayment $27.10 (range $5.15 – $37.85)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 9

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JULIE ANN HERNANDEZ LCSW

Social Worker (Clinical)