John Anthony McMahon III, BCBA, M.ED, B.S.

Primary specialty

Behavior AnalystTaxonomy code 103K00000X

Practice address

491 Kilvert St
Warwick, RI 02886-1370

Phone

(401) 618-6991

Fax

(401) 618-6995

NPI assigned

Mar 6, 2020

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

Credentials

Bachelor of Science, Master of Education

Practice roles

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.

• Meaningful Outcomes LLC

  • Behavior Analyst
  • West Warwick, RI
  • NPI 1144885674
  NPD (past)
• Momentum Inc.

  • Behavior Analyst
  • Warwick, RI
  • NPI 1184049017
  NPD (past)
• Positive Synergy Corporation

  • Behavior Analyst
  • Seekonk, MA
  • NPI 1225456510
  NPD (past)
• Positive Synergy Corporation

  • Speech-Language Pathologist
  • Seekonk, MA
  • NPI 1538643598
  NPD (past)

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

{
    "created_epoch": "1583452800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1775088000000",
    "number": "1003441304",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "491 KILVERT ST",
            "city": "WARWICK",
            "state": "RI",
            "postal_code": "028861370",
            "telephone_number": "401-618-6991",
            "fax_number": "401-618-6995"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "491 KILVERT ST",
            "city": "WARWICK",
            "state": "RI",
            "postal_code": "028861370",
            "telephone_number": "401-618-6991",
            "fax_number": "401-618-6995"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MCMAHON",
        "first_name": "JOHN",
        "middle_name": "ANTHONY",
        "name_prefix": "Mr.",
        "name_suffix": "III",
        "credential": "BCBA, M.ED, B.S.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2020-03-06",
        "last_updated": "2026-04-02",
        "certification_date": "2026-04-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "103K00000X",
            "taxonomy_group": "",
            "desc": "Behavior Analyst",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• McLeod Optical Co Inc
• Brianna McLeod
• Cara Ann McLinden, M.S.P.T.
• Beth Anne McLoughlin
• Alexis McMahon
• Matthew Paul McMullen, DO
• Susan McMullen, LMT
• Kelly McNally
• Michelle M McNiff, RPH
• Mary C McQuarrie

• Behavior Analyst in Warwick, RI
• Providers in Warwick, RI by specialty
• Behavior Analyst in Rhode Island

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 2, 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.