Jack Lawrence Mayer, M.D., FAAP

Primary specialty

Pediatric Adolescent Medicine PhysicianTaxonomy code 2080A0000X

License

042-0004728 Issued in VT

Practice address

44 Collins Dr
Suite 202
Middlebury, VT 05753-8528

Phone

(802) 388-1338

Fax

(802) 388-8244

NPI assigned

Apr 26, 2006

Last updated

Jul 13, 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 3

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Rainbow Pediatrics

  • Pediatric Adolescent Medicine Physician
  • Middlebury, VT
  • NPI 1649216268
  NPD (past)

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

{
    "created_epoch": "1146009600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1639136559",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "44 COLLINS DR",
            "address_2": "SUITE 202",
            "city": "MIDDLEBURY",
            "state": "VT",
            "postal_code": "057538528",
            "telephone_number": "802-388-1338",
            "fax_number": "802-388-8244"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "44 COLLINS DR",
            "address_2": "SUITE 202",
            "city": "MIDDLEBURY",
            "state": "VT",
            "postal_code": "057538528",
            "telephone_number": "802-388-1338",
            "fax_number": "802-388-8244"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MAYER",
        "first_name": "JACK",
        "middle_name": "LAWRENCE",
        "name_prefix": "Dr.",
        "credential": "M.D., FAAP",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-04-26",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2080A0000X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Adolescent Medicine",
            "state": "VT",
            "license": "042-0004728",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "0004626",
            "state": "VT"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BCVT",
            "identifier": "4626",
            "state": "VT"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MVP ID#",
            "identifier": "26P885",
            "state": null
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Martins Foods of South Burlington LLC (Hannaford Food and Drug)
• Mary Ann Dattilo Boyd PLLC
• Emily Millard Mathews, M.S., ATC
• David Peter Matthews, ATC
• Kathryn Marion Maxwell, MS, CCC-SLP
• Cherie Maynard
• Elise Marie McClintock, FNP
• Elizabeth McCracken, LICSW
• McDaniel Chiropractic Center, Inc.
• James McDaniel, D.C.

• Pediatric Adolescent Medicine Physician in Middlebury, VT
• Providers in Middlebury, VT by specialty
• Pediatric Adolescent Medicine Physician in Vermont

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.