Marietta De Alday, MD
NPI 1831131424 · Pediatrics Physician · W Lancaster, CA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marietta De Alday, MD is a Pediatrics Physician provider in W Lancaster, CA (NPI 1831131424).
Provider details
- NPI number
- 1831131424
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- License
- A53001 (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
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
- 2006-06-11
- Last updated
- 2007-07-08
Frequently asked questions
- What is Marietta De Alday's NPI number?
- Marietta De Alday's National Provider Identifier (NPI) is 1831131424, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marietta De Alday's specialty?
- Marietta De Alday is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Marietta De Alday located?
- Marietta De Alday's practice location on file with NPPES is 44256 N 10th Street, W Lancaster, CA 93534-4134.
- What is Marietta De Alday's phone number?
- The practice phone number listed in the NPPES registry for Marietta De Alday is (661) 723-3874.
- Does Marietta De Alday accept Medicare?
- Marietta De Alday is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marietta De Alday's NPI active?
- Yes — Marietta De Alday's NPI (1831131424) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.