Individual provider Active NPI

Catherine Siew, DO

  • Neonatal-Perinatal Medicine Physician
  • Loma Linda, CA
National Provider Identifier
1992333496
Registry record updated Nov 3, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Neonatal-Perinatal Medicine PhysicianTaxonomy code 2080N0001X
License
20A25350 Issued in CA
Practice address
11234 Anderson St
Loma Linda, CA 92350-1716
Phone
(909) 558-4000
NPI assigned
Mar 30, 2020
Last updated
Nov 3, 2026By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Nov 3, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Neonatal-Perinatal Medicine Physician 2080N0001X 5101027272 MI
Neonatal-Perinatal Medicine Physician 2080N0001X 20A25350 CA Primary

Addresses

Primary practice location

11234 Anderson St
Loma Linda, CA 92350-1716

Mailing address

File Number 54701
Los Angeles, CA 90074-0001
Phone (909) 558-4000

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file
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.

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Osteopathy

State licenses

LicenseStateTypeSpecialty
5101027272MIMDNeonatal-Perinatal Medicine Physician

NPI Registry JSON

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

{
    "created_epoch": "1585526400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1793664000000",
    "number": "1992333496",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "FILE NUMBER 54701",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900740001",
            "telephone_number": "909-558-4000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "11234 ANDERSON ST",
            "city": "LOMA LINDA",
            "state": "CA",
            "postal_code": "923501716",
            "telephone_number": "909-558-4000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SIEW",
        "first_name": "CATHERINE",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2020-03-30",
        "last_updated": "2026-11-03",
        "certification_date": "2026-11-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2080N0001X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Neonatal-Perinatal Medicine",
            "state": "MI",
            "license": "5101027272",
            "primary": false
        },
        {
            "code": "2080N0001X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Neonatal-Perinatal Medicine",
            "state": "CA",
            "license": "20A25350",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Loma Linda, CA

Sources for this page

Verify at the official NPI Registry.