Mark Robert Steward, PH.D.

Primary specialty

Adult Development & Aging PsychologistTaxonomy code 103TA0700X

License

4784 Issued in MA

Practice address

53 Langley Rd
Suite 340D
Newton Centre, MA 02459-1913

Phone

(617) 484-7604

NPI assigned

Dec 21, 2006

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 7

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

Credentials

Doctor of Philosophy

State licenses

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

{
    "created_epoch": "1166659200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1821152828",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "17 EDGEMOOR RD",
            "city": "BELMONT",
            "state": "MA",
            "postal_code": "024783916",
            "telephone_number": "617-484-7604"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "53 LANGLEY RD",
            "address_2": "SUITE 340D",
            "city": "NEWTON CENTRE",
            "state": "MA",
            "postal_code": "024591913",
            "telephone_number": "617-484-7604"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "STEWARD",
        "first_name": "MARK",
        "middle_name": "ROBERT",
        "name_prefix": "Dr.",
        "credential": "PH.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-12-21",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "103TA0700X",
            "taxonomy_group": "",
            "desc": "Psychologist, Adult Development & Aging",
            "state": "MA",
            "license": "4784",
            "primary": true
        },
        {
            "code": "103TC0700X",
            "taxonomy_group": "",
            "desc": "Psychologist, Clinical",
            "state": "MA",
            "license": "4784",
            "primary": false
        },
        {
            "code": "103TC2200X",
            "taxonomy_group": "",
            "desc": "Psychologist, Clinical Child & Adolescent",
            "state": "MA",
            "license": "4784",
            "primary": false
        },
        {
            "code": "103T00000X",
            "taxonomy_group": "",
            "desc": "Psychologist",
            "state": "MA",
            "license": "4784",
            "primary": false
        },
        {
            "code": "103TF0000X",
            "taxonomy_group": "",
            "desc": "Psychologist, Family",
            "state": "MA",
            "license": "4784",
            "primary": false
        },
        {
            "code": "103TP2701X",
            "taxonomy_group": "",
            "desc": "Psychologist, Group Psychotherapy",
            "state": "MA",
            "license": "4784",
            "primary": false
        },
        {
            "code": "103TS0200X",
            "taxonomy_group": "",
            "desc": "Psychologist, School",
            "state": "MA",
            "license": "4784",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BLUE CROSS BLUE SHIELD",
            "identifier": "W04555",
            "state": "MA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Roger W Spingarn, MD
• Allyn St. Lifer, LICSW
• Ann B Stambler, LICSW
• Morris J.L. Stambler, M.D.
• Sheila Marilyn Statlender, PH.D.
• James Peter Stewart, DPM
• Rebecca Colacchio Thompson, MSW, LICSW
• Erika Vargas, LMHC
• Elyse Anne Wagner, DMD
• John Walsh

• Adult Development & Aging Psychologist in Newton Centre, MA
• Providers in Newton Centre, MA by specialty
• Adult Development & Aging Psychologist in Massachusetts

• 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.