Steven A.R. Castillo, MD

Primary specialty

General Practice PhysicianTaxonomy code 208D00000X

License

0101290655 Issued in VA

Practice address

8901 Rockville Pike
Bethesda, MD 20889-0001

Phone

(301) 295-8901

Fax

(301) 319-8240

NPI assigned

Apr 8, 2025

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

Credentials

Doctor of Medicine

Interoperability endpoints

• Direct secure messaging: scastillo128889@direct.virginiahospitalcenter.net

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

{
    "created_epoch": "1744070400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1786752000000",
    "number": "1336933894",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "8901 ROCKVILLE PIKE",
            "city": "BETHESDA",
            "state": "MD",
            "postal_code": "208890001",
            "telephone_number": "301-295-8901",
            "fax_number": "301-319-8240"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "8901 ROCKVILLE PIKE",
            "city": "BETHESDA",
            "state": "MD",
            "postal_code": "208890001",
            "telephone_number": "301-295-8901",
            "fax_number": "301-319-8240"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CASTILLO",
        "first_name": "STEVEN",
        "middle_name": "A.R.",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2025-04-08",
        "last_updated": "2026-08-15",
        "certification_date": "2026-08-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "208D00000X",
            "taxonomy_group": "",
            "desc": "General Practice",
            "state": "VA",
            "license": "0101290655",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Daniel Gilbert Cassidy, PHD, ABPP
• Donald Cassidy, PHD
• Quinn Kathleen Cassidy, MSW, LCSW-C
• Emmanuel George Cassimatis, M.D.
• Christopher Powers Cassleman Jr., M.S.W., L.I.C.S.W
• April J Castro, DDS
• Caroline C Castro, PT, DPT
• Keenan Caswell
• Cataract and Laser Eye Institute of America, Inc.
• Karrel Catequista

• General Practice Physician in Bethesda, MD
• Providers in Bethesda, MD by specialty
• General Practice Physician in Maryland

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 15, 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.