Marietta Yumena De Alday, MD

Primary specialty

Pediatrics PhysicianTaxonomy code 208000000X

License

A53001 Issued in CA

Practice address

44256 N 10TH Street
Molina Medical Center
W Lancaster, CA 93534-4134

Phone

(661) 723-3874

Fax

(661) 723-9975

NPI assigned

Jun 11, 2006

Last updated

Jul 13, 2026By the provider in NPPES

Sex

Female

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in CA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• County of Los Angeles

  dba County of Los Angeles Harbor UCLA Medical Center

  • General Acute Care Hospital
  • Torrance, CA
  • NPI 1851363188
  Medicare reassignment NPD
• County of Los Angeles

  • Clinic/Center
  • Los Angeles, CA
  • NPI 1295407401
  NPD
• County of Los Angeles

  dba San Fernando Health Center

  • Clinic/Center
  • San Fernando, CA
  • NPI 1316953532
  NPD
• Molina Healthcare of California

  • Family Medicine Physician
  • Sacramento, CA
  • NPI 1073628202
  NPD (past)
• Molina Healthcare of California

  dba Molina Medical Centers

  • Health Maintenance Organization
  • Long Beach, CA
  • NPI 1194811760
  NPD (past)
• Molina Healthcare of California

  • Family Medicine Physician
  • Sacramento, CA
  • NPI 1841305075
  NPD (past)
• Molina Medical Centers

  • Family Medicine Physician
  • Colton, CA
  • NPI 1114032448
  NPD (past)

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1149984000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1831131424",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "ONE GOLDEN SHORE",
            "address_2": "MOLINA MEDICAL CENTERS SMO",
            "city": "LONG BEACH",
            "state": "CA",
            "postal_code": "908024202",
            "telephone_number": "661-723-3874",
            "fax_number": "661-723-9975"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "44256 N 10TH STREET",
            "address_2": "MOLINA MEDICAL CENTER",
            "city": "W LANCASTER",
            "state": "CA",
            "postal_code": "935344134",
            "telephone_number": "661-723-3874",
            "fax_number": "661-723-9975"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DE ALDAY",
        "first_name": "MARIETTA",
        "middle_name": "YUMENA",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-06-11",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "CA",
            "license": "A53001",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.