Eric Van Mastrolonardo, MD

Primary specialty

Otolaryngology PhysicianTaxonomy code 207Y00000X

License

2026004588 Issued in MO

Practice address

4500 Forest Park Ave
Dept Otolaryngology, 5TH FL
Saint Louis, MO 63108-2114

Phone

(314) 362-7509

Fax

(888) 452-4025

NPI assigned

Apr 7, 2021

Last updated

Jul 7, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Other identifiers 1

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in PA

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 1

Medicare enrollment (NPD)

Enrolled

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

{
    "created_epoch": "1617753600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783382400000",
    "number": "1376122101",
    "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": "314-362-7509",
            "fax_number": "888-452-4025"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4500 FOREST PARK AVE",
            "address_2": "DEPT OTOLARYNGOLOGY, 5TH FL",
            "city": "SAINT LOUIS",
            "state": "MO",
            "postal_code": "631082114",
            "telephone_number": "314-362-7509",
            "fax_number": "888-452-4025"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MASTROLONARDO",
        "first_name": "ERIC",
        "middle_name": "VAN",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2021-04-07",
        "last_updated": "2026-07-07",
        "certification_date": "2021-04-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Y00000X",
            "taxonomy_group": "",
            "desc": "Otolaryngology",
            "state": "MO",
            "license": "2026004588",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "200173705",
            "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": "4500 Forest Park Ave",
            "address_2": "Dept Otolaryngology, 5th Fl",
            "city": "Saint Louis",
            "state": "MO",
            "country_code": "US",
            "postal_code": "631082114",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Chelsea Marie Masters, FNP-C
• Jenna Masters, MA
• Laura M Masters, P.T.
• Julie Marie Mastnak, PH.D.
• William L Mastorakos, DDS MS
• Abdullah Al Masud, M.D.
• Andres Alejandro Mata Hidalgo, MD
• Viviana Isabel Mata, DC
• Christine Mataya
• Matchfit Physical Therapy

• Otolaryngology Physician in Saint Louis, MO
• Providers in Saint Louis, MO by specialty
• Otolaryngology Physician in Missouri

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 7, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.