Alexandra G Castillejos Ellenthal, MD

Primary specialty

Ophthalmology PhysicianTaxonomy code 207W00000X

License

A201789 Issued in CA

Practice address

342 F St
Chula Vista, CA 91910-2625

Phone

(619) 422-1471

NPI assigned

Mar 20, 2019

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 NC, CA2 enrollments

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 2

Specialty

Ophthalmology

Education

Other, 2019

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Cape Fear Eye Associates PAGroup PAC ID 3072519107, 9 clinicians

Castillejos Eye Institute Medical GroupGroup PAC ID 8729023478, 6 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Sharp Chula Vista Medical Center Hospital, Chula Vista, CA, CCN 050222
• Scripps Mercy Hospital Hospital, San Diego, CA, CCN 050077

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Networks

• BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

• Direct secure messaging: alexandra.castillejosellenthal.p1@direct.cfea.nextgenshare.com
• FHIR API: https://fhir.nextgen.com/nge/prod/fhir-api-r4/fhir/r4/
• Direct secure messaging: acastillejosellenthal546390@direct.medicine.duke.edu

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

• Castillejos Eye Institute Medical Group

  • Ophthalmology Physician
  • Chula Vista, CA
  • NPI 1841377660
  Medicare reassignment Care Compare group NPD
• Cape Fear Eye Associates PA

  • Ophthalmology Physician
  • Fayetteville, NC
  • NPI 1962456343
  Medicare reassignment Care Compare group NPD
• Emergency and Acute Care Medical Corporation

  • Emergency Medicine Physician
  • San Diego, CA
  • NPI 1437103942
  Medicare reassignment
• Castillejos Eye Institute Medical Group

  • Ophthalmology Physician
  • Chula Vista, CA
  • NPI 1982775672
  NPD
• Cape Fear Eye Associates

  • Optician
  • Fayetteville, NC
  • NPI 1588781108
  NPD

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Scripps Health

  • General Acute Care Hospital
  • San Diego, CA
  • NPI 1659359446
  Care Compare affiliation
• Sharp Chula Vista Medical Center

  • General Acute Care Hospital
  • Chula Vista, CA
  • NPI 1396728630
  Care Compare affiliation

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

{
    "created_epoch": "1553040000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1771459200000",
    "number": "1144780933",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "342 F ST",
            "city": "CHULA VISTA",
            "state": "CA",
            "postal_code": "919102625",
            "telephone_number": "619-422-1471"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "342 F ST",
            "city": "CHULA VISTA",
            "state": "CA",
            "postal_code": "919102625",
            "telephone_number": "619-422-1471"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CASTILLEJOS ELLENTHAL",
        "first_name": "ALEXANDRA",
        "middle_name": "G",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2019-03-20",
        "last_updated": "2026-02-19",
        "certification_date": "2026-02-19",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207W00000X",
            "taxonomy_group": "",
            "desc": "Ophthalmology",
            "state": "CA",
            "license": "A201789",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Tania Castaneda
• Tracy Nayari Castaneda
• Gladys Montserrat Castanon
• Cassandra Castelanos
• Bianca Castellanos
• Castillejos Eye Institute Medical Group
• Castillejos Eye Institute Medical Group
• David Castillejos, M.D.
• Maria E Castillejos, M.D.
• Silvia Castillo-Delgado I, BSW, APCC, CRC

• Ophthalmology Physician in Chula Vista, CA
• Providers in Chula Vista, CA by specialty
• Ophthalmology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 19, 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.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.