Stephen Joseph Massimi, M.D.

Primary specialty

Physical Medicine & Rehabilitation PhysicianTaxonomy code 208100000X

License

52074 Issued in CT

Practice address

1 Blachley Rd
Hospital for Special Surgery
Stamford, CT 06902-0002

Phone

(203) 705-2350

Fax

(203) 705-2924

NPI assigned

Mar 30, 2009

Sex

Male

Sole proprietor

No

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

Specialties & licenses 3

Addresses

Electronic endpoints 5

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

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.

Opted out of Medicare

Yes, effective Jan 1, 2025 through Jan 1, 2027

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Interoperability endpoints

• Direct secure messaging: smassimi53263@direct.hss.edu

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

{
    "created_epoch": "1238371200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1730419200000",
    "number": "1831331388",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 626",
            "city": "GREAT RIVER",
            "state": "NY",
            "postal_code": "117390626",
            "telephone_number": "203-705-2350",
            "fax_number": "203-705-2924"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1 BLACHLEY RD",
            "address_2": "HOSPITAL FOR SPECIAL SURGERY",
            "city": "STAMFORD",
            "state": "CT",
            "postal_code": "069020002",
            "telephone_number": "203-705-2350",
            "fax_number": "203-705-2924"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "535 E 70th St",
            "address_purpose": "LOCATION",
            "city": "New York",
            "state": "NY",
            "postal_code": "100214823",
            "country_code": "US",
            "telephone_number": "203-705-2350",
            "fax_number": "203-705-2924",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MASSIMI",
        "first_name": "STEPHEN",
        "middle_name": "JOSEPH",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2009-03-30",
        "last_updated": "2024-11-01",
        "certification_date": "2024-11-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208100000X",
            "taxonomy_group": "",
            "desc": "Physical Medicine & Rehabilitation",
            "state": "NY",
            "license": "255564",
            "primary": false
        },
        {
            "code": "2081S0010X",
            "taxonomy_group": "",
            "desc": "Physical Medicine & Rehabilitation, Sports Medicine",
            "state": "NY",
            "license": "255564",
            "primary": false
        },
        {
            "code": "208100000X",
            "taxonomy_group": "",
            "desc": "Physical Medicine & Rehabilitation",
            "state": "CT",
            "license": "52074",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicproxy.et0927.epichosted.com/FHIRProxy/api/FHIR/R4/",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "CCDA",
            "address_1": "1 Blachley Rd",
            "address_2": "Hospital for Special Surgery",
            "city": "Stamford",
            "state": "CT",
            "country_code": "US",
            "postal_code": "069020002",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicproxy.et0927.epichosted.com/FHIRProxy/api/FHIR/R4/",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "CCDA",
            "address_1": "1 Blachley Rd",
            "address_2": "Hospital for Special Surgery",
            "city": "Stamford",
            "state": "CT",
            "country_code": "US",
            "postal_code": "069020002",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicproxy.et0927.epichosted.com/FHIRProxy/api/FHIR/R4/",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "CCDA",
            "address_1": "1 Blachley Rd",
            "address_2": "Hospital for Special Surgery",
            "city": "Stamford",
            "state": "CT",
            "country_code": "US",
            "postal_code": "069020002",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "smassimi53263@direct.HSS.edu",
            "affiliation": "N",
            "endpointDescription": "Hospital Direct Email Address",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "CCDA",
            "address_1": "535 E 70th St",
            "city": "New York",
            "state": "NY",
            "country_code": "US",
            "postal_code": "100214823",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicproxy.et0927.epichosted.com/FHIRProxy/api/FHIR/DSTU2",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "CCDA",
            "address_1": "1 Blachley Rd",
            "address_2": "Hospital for Special Surgery",
            "city": "Stamford",
            "state": "CT",
            "country_code": "US",
            "postal_code": "069020002",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Christopher Nicholas Mascio, PA-C
• Laura Mase
• Frank Anthony Masino, M.D.
• Megan Arthur Mask, PA-C
• Allison Mason, SLP
• Amanda Masterson, DPT
• Sabrina Mastropolo, BCBA, LBA
• Jennifer Mata
• Nicole Matar, MD
• Angela L. Matera, MSN

• Physical Medicine & Rehabilitation Physician in Stamford, CT
• Providers in Stamford, CT by specialty
• Physical Medicine & Rehabilitation Physician in Connecticut

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 1, 2024; 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; Opt Out Affidavits.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.