Individual provider Active NPI

Peter Donato Larossa, MD

  • Pediatric Cardiology Physician
  • Saint Louis, MO
National Provider Identifier
1255759700
Registry record updated Feb 9, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Pediatric Cardiology PhysicianTaxonomy code 2080P0202X
License
2021020409 Issued in MO
Practice address
1 Childrens PL
Div Ped Cardiology
Saint Louis, MO 63110-1002
Phone
(314) 454-6095
Fax
(314) 884-6008
NPI assigned
Apr 2, 2014
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Feb 9, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Pediatrics Physician 208000000X 2021020409 MO
Pediatric Cardiology Physician 2080P0202X 2021020409 MO Primary

Addresses

Primary practice location

1 Childrens PL
Div Ped Cardiology
Saint Louis, MO 63110-1002

Mailing address

PO Box 7412011
Chicago, IL 60674-2011
Phone (314) 454-6095

Other identifiers 1

IdentifierTypeStateIssuer
200098518MedicaidMO

Electronic endpoints 1

TypeEndpointUseAffiliation
FHIR URL https://epicproxy.et0965.epichosted.com/FHIRProxy/api/FHIR/DSTU2/ Washington University

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MO, IL2 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

Enrollment IDStateProvider typePAC IDDetails
I20210729001844 MO Practitioner - Pediatric MedicinePractitioner - Cardiovascular Disease (Cardiology) 4284907072 Reassigns benefits to 3 organizations
I20211123000517 IL Practitioner - Cardiovascular Disease (Cardiology)Practitioner - Pediatric Medicine 4284907072 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Pediatric MedicineAlso: Cardiovascular Disease (Cardiology)
Education
University of Pittsburgh School of Medicine, 2014
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Washington UniversityGroup PAC ID 9830008770, 2,968 clinicians

Practice addresses (Care Compare)

1 Childrens PL
Saint Louis, MO 63110-1002
Phone (314) 273-1006

Merit-based Incentive Payment System (MIPS)

Final score
84.2 of 100Reported as group
Quality
71.6
Promoting interoperability
100
Improvement activities
40
Cost
75.75

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Washington University Physicians in Illinois, Inc. CurrentSince Aug 20, 2021 Accepting new patients
Washington University Physicians in Illinois, Inc Current Accepting new patients
Lester E Cox Medical Centers CurrentSince Mar 1, 2026 Accepting new patients
Saint Francis Medical Center Current Accepting new patients
Saint Francis Medical Center CurrentSince Dec 27, 2021 Accepting new patients
Washington University CurrentSince Jul 26, 2021 Accepting new patients
Washington University CurrentSince Jul 26, 2021 Accepting new patients
Lester E Cox Medical Centers Pediatrics CurrentSince Mar 1, 2026 Accepting new patients
Washington University Physicians in Illinois, Inc CurrentSince Aug 20, 2021 Accepting new patients
Saint Francis Medical Center CurrentSince Dec 27, 2021 Accepting new patients
Washington University Past Accepting new patients

Locations

4500 Memorial Dr
Swansea, IL 62226
Phone (618) 233-7750

211 Saint Francis Dr
Cpe Girardeau, MO 63703
Phone (573) 331-3000

1224 Graham Rd
Ste 2010
Florissant, MO 63031
Phone (314) 839-5232

1 Childrens Pl
Ste C
Saint Louis, MO 63110
Phone (314) 454-2104

1 Childrens Pl
#8116
Saint Louis, MO 63110
Phone (314) 454-6095

1 Childrens Pl
Saint Louis, MO 63110
Phone (314) 454-2076

4240 Duncan Ave
#8221
Saint Louis, MO 63110

Organizations & group practices 11

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": "1396396800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1770595200000",
    "number": "1255759700",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 7412011",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606742011",
            "telephone_number": "314-454-6095",
            "fax_number": "314-884-6008"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1 CHILDRENS PL",
            "address_2": "DIV PED CARDIOLOGY",
            "city": "SAINT LOUIS",
            "state": "MO",
            "postal_code": "631101002",
            "telephone_number": "314-454-6095",
            "fax_number": "314-884-6008"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LAROSSA",
        "first_name": "PETER",
        "middle_name": "DONATO",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2014-04-02",
        "last_updated": "2026-02-09",
        "certification_date": "2021-08-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "MO",
            "license": "2021020409",
            "primary": false
        },
        {
            "code": "2080P0202X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Pediatric Cardiology",
            "state": "MO",
            "license": "2021020409",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "200098518",
            "state": "MO"
        }
    ],
    "endpoints": [
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicproxy.et0965.epichosted.com/FHIRProxy/api/FHIR/DSTU2/",
            "affiliation": "Y",
            "affiliationName": "Washington University",
            "address_1": "1 Childrens Pl",
            "address_2": "Div Ped Cardiology",
            "city": "Saint Louis",
            "state": "MO",
            "country_code": "US",
            "postal_code": "631101002",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Saint Louis, MO

Sources for this page

Verify at the official NPI Registry.