NPIMap

Individual provider Active NPI

Alexander H De Castro-Abeger, MD, MBA

  • Ophthalmology Physician
  • Los Angeles, CA
National Provider Identifier
1902255367
Registry record updated Jul 6, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Ophthalmology PhysicianTaxonomy code 207W00000X
License
A171995 Issued in CA
Practice address
200 Stein Plaza
Los Angeles, CA 90095-7065
Phone
(818) 431-4414
NPI assigned
Jun 7, 2016
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jul 6, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Ophthalmology Physician 207W00000X A171995 CA Primary

Addresses

Primary practice location

200 Stein Plaza
Los Angeles, CA 90095-7065

Mailing address

5767 W Century Blvd Ste 400
Los Angeles, CA 90045-5631

Other practice location 1

2230 Lynn Rd Ste 104
Thousand Oaks, CA 91360-1959
Phone (805) 495-0458

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20210916003139 CA Practitioner - Ophthalmology 5092002394 Reassigns benefits to 2 organizations
Practice locations: Redondo Beach, CA

Care Compare profile

Medicare Care Compare
Specialty
Ophthalmology
Education
Tufts University School of Medicine, 2016
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Jules Stein Eye Institute Medical GroupGroup PAC ID 5597663740, shared by 3 NPIs, 118 clinicians

Practice addresses (Care Compare)

1636 Aviation Blvd
Redondo Beach, CA 90278-2851
Phone (310) 374-2727

622 W Duarte Rd
Suite 101
Arcadia, CA 91007-7606
Phone (323) 442-7122

Hospital & facility affiliations

  • Community Memorial Hospital - Ventura Hospital, Ventura, CA, CCN 050394

Merit-based Incentive Payment System (MIPS)

Final score
88.24 of 100Reported as group
Quality
86.17
Improvement activities
40

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Master of Business Administration, Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
A171995CAMDOphthalmology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Children'S Hospital Los Angeles Medical Group, Inc. CurrentSince Sep 8, 2021 Accepting new patients
Miramar Eye Specialists Medical Group, Inc Ophthalmology CurrentSince Aug 1, 2023 Accepting new patients
Children'S Eye Institute, Inc. Ophthalmology CurrentSince Nov 18, 2022 Accepting new patients
Vanderbilt Univ. Medical Center Past Accepting new patients
San Antonio Regional Hospital Past Accepting new patients
Childrens Hospital of Los Angeles Past Accepting new patients
Community Memorial Health System Past Accepting new patients
Providence Health System Southern California Past Accepting new patients
Community Memorial Hospital Past Accepting new patients
Alex de Castro-Abeger, MD Ophthalmology PastSince Jun 27, 2023 Accepting new patients

Locations

751 E Daily Dr
Ste 110
Camarillo, CA 93010
Phone (805) 987-8705

771 E Daily Dr
Ste 245
Camarillo, CA 93010
Phone (805) 322-1510

4650 W Sunset Blvd
Los Angeles, CA 90027
Phone (323) 361-2122

2230 Lynn Rd
Ste 102
Thousand Oaks, CA 91360
Phone (805) 495-0458

2230 Lynn Rd
Ste 104
Thousand Oaks, CA 91360
Phone (805) 495-0458

1246 E Arrow Hwy
Ste A
Upland, CA 91786
Phone (909) 931-9675

3085 Loma Vista Rd
Ventura, CA 93003
Phone (805) 583-3950

3003 Loma Vista Rd
Ste E
Ventura, CA 93003
Phone (805) 648-3085

Networks

  • BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

  • Direct secure messaging: adecabeger@direct.mesmg.com
  • Direct secure messaging: alexander.decastro@uprisedirect.com

Organizations & group practices 10

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.

Hospital & facility affiliations 10

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

NPI Registry JSON

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

{
    "created_epoch": "1465257600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783296000000",
    "number": "1902255367",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5767 W CENTURY BLVD STE 400",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900455631"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "200 STEIN PLAZA",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900957065",
            "telephone_number": "818-431-4414"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2230 Lynn Rd Ste 104",
            "address_purpose": "LOCATION",
            "city": "Thousand Oaks",
            "state": "CA",
            "postal_code": "913601959",
            "country_code": "US",
            "telephone_number": "805-495-0458",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "DE CASTRO-ABEGER",
        "first_name": "ALEXANDER",
        "middle_name": "H",
        "name_prefix": "Dr.",
        "credential": "MD, MBA",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2016-06-07",
        "last_updated": "2026-07-06",
        "certification_date": "2026-07-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207W00000X",
            "taxonomy_group": "",
            "desc": "Ophthalmology",
            "state": "CA",
            "license": "A171995",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Los Angeles, CA

Sources for this page

Verify at the official NPI Registry.