NPIMap

Individual provider Active NPI

Marietta V Sonido, MD

  • Pediatrics Physician
  • Bridgeport, CT
National Provider Identifier
1639230444
Registry record updated Sep 11, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Pediatrics PhysicianTaxonomy code 208000000X
License
016402 Issued in CT
Practice address
1635 Central Avenue Room 213
Southwest CT Mental Health System Attn Sandra Grazynski
Bridgeport, CT 06610
Phone
(203) 551-7660
Fax
(203) 551-7481
NPI assigned
Dec 13, 2006
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 11, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 016402 CT
Pediatrics Physician 208000000X 016402 CT Primary

Addresses

Primary practice location

1635 Central Avenue Room 213
Southwest CT Mental Health System Attn Sandra Grazynski
Bridgeport, CT 06610

Mailing address

1635 Central Avenue Room 213
Southwest CT Mental Health System Attn Sandra Grazynski
Bridgeport, CT 06610
Phone (203) 551-7660

Other names 1

  • Marietta G Sonido Other 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
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
016402CTMDPediatrics Physician

Practice roles

OrganizationSpecialtyStatusNew patients
State of Connecticut PastSince Jul 16, 1998 Accepting new patients
State of Connecticut Past Accepting new patients

Organizations & group practices 2

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": "1165968000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1639230444",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1635 CENTRAL AVENUE ROOM 213",
            "address_2": "SOUTHWEST CT MENTAL HEALTH SYSTEM ATTN SANDRA GRAZYNSKI",
            "city": "BRIDGEPORT",
            "state": "CT",
            "postal_code": "06610",
            "telephone_number": "203-551-7660",
            "fax_number": "203-551-7481"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1635 CENTRAL AVENUE ROOM 213",
            "address_2": "SOUTHWEST CT MENTAL HEALTH SYSTEM ATTN SANDRA GRAZYNSKI",
            "city": "BRIDGEPORT",
            "state": "CT",
            "postal_code": "06610",
            "telephone_number": "203-551-7660",
            "fax_number": "203-551-7481"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SONIDO",
        "first_name": "MARIETTA",
        "middle_name": "V",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-12-13",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CT",
            "license": "016402",
            "primary": false
        },
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "CT",
            "license": "016402",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "MARIETTA",
            "last_name": "SONIDO",
            "middle_name": "G",
            "credential": "MD",
            "code": "5",
            "type": "Other Name"
        }
    ]
}

Other providers in Bridgeport, CT

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; 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.