Individual provider Active NPI

Souren A Rostomian, D.D.S.

  • General Practice Dentistry
  • Pasadena, CA
National Provider Identifier
1184771818
Registry record updated Feb 25, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
General Practice DentistryTaxonomy code 1223G0001X
License
44534 Issued in CA
Practice address
200 S El Molino Ave Ste 2
Pasadena, CA 91101-2985
Phone
(818) 478-0222
Fax
(626) 314-3552
NPI assigned
Jan 4, 2007
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Feb 25, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
General Practice Dentistry 1223G0001X 44534 CA Primary

Addresses

Primary practice location

200 S El Molino Ave Ste 2
Pasadena, CA 91101-2985

Mailing address

200 S El Molino Ave Ste 2
Pasadena, CA 91101-2985
Phone (818) 478-0222

Other identifiers 1

IdentifierTypeStateIssuer
G9307801MedicaidCA

Other names 1

  • Dr. Alexander S Ross Professional name

Medicare participation

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

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

State licenses

LicenseStateTypeSpecialty
44534CAMDGeneral Practice Dentistry

Practice roles

OrganizationSpecialtyStatusNew patients
Rainman Behavioral Center, Inc Current Accepting new patients
Karen Baghdasaryan Dental Corporation General Practice Past Accepting new patients
Baghdasarian and Ross Dental Corporation PastSince Oct 27, 2019 Accepting new patients

Locations

200 S El Molino Ave
Ste 2
Pasadena, CA 91101
Phone (626) 314-3550

Organizations & group practices 3

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.

NPI Registry JSON

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

{
    "created_epoch": "1167868800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1771977600000",
    "number": "1184771818",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "200 S EL MOLINO AVE STE 2",
            "city": "PASADENA",
            "state": "CA",
            "postal_code": "911012985",
            "telephone_number": "818-478-0222",
            "fax_number": "626-314-3552"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "200 S EL MOLINO AVE STE 2",
            "city": "PASADENA",
            "state": "CA",
            "postal_code": "911012985",
            "telephone_number": "818-478-0222",
            "fax_number": "626-314-3552"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ROSTOMIAN",
        "first_name": "SOUREN",
        "middle_name": "A",
        "name_prefix": "Dr.",
        "credential": "D.D.S.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-01-04",
        "last_updated": "2026-02-25",
        "certification_date": "2026-02-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1223G0001X",
            "taxonomy_group": "",
            "desc": "Dentist, General Practice",
            "state": "CA",
            "license": "44534",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "G9307801",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "ALEXANDER",
            "last_name": "ROSS",
            "middle_name": "S",
            "prefix": "DR.",
            "credential": "D.D.S.",
            "code": "2",
            "type": "Professional Name"
        }
    ]
}

Other providers in Pasadena, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 25, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.