Elderberry RDN LLC

Primary specialty

Registered DietitianTaxonomy code 133V00000X

Legal business name

ELDERBERRY RDN LLC

Practice address

29 Middle Rd
Deerfield, NH 03037-1611

Phone

(603) 494-8543

NPI assigned

May 13, 2026

Last updated

May 13, 2026By the provider in NPPES

Organization subpart

No

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

Authorized official

Name

Tina Carolyn Layton, RD, CDCESNPI 1245251784

Title

Owner, Dietitian

Phone

(603) 494-8543

Specialties & licenses 1

Addresses

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

• Tina Carolyn Layton, RD

  • Registered Dietitian
  • Portsmouth, NH
  • NPI 1245251784

  Dietitian, Registered

  NPD Authorized official

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

{
    "created_epoch": "1778630400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1778630400000",
    "number": "1770411175",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "29 MIDDLE RD",
            "city": "DEERFIELD",
            "state": "NH",
            "postal_code": "030371611",
            "telephone_number": "603-494-8543"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "29 MIDDLE RD",
            "city": "DEERFIELD",
            "state": "NH",
            "postal_code": "030371611",
            "telephone_number": "603-494-8543"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "ELDERBERRY RDN LLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2026-05-13",
        "last_updated": "2026-05-13",
        "certification_date": "2026-05-13",
        "status": "A",
        "authorized_official_last_name": "LAYTON",
        "authorized_official_first_name": "TINA",
        "authorized_official_middle_name": "CAROLYN",
        "authorized_official_title_or_position": "OWNER, DIETITIAN",
        "authorized_official_telephone_number": "603-494-8543",
        "authorized_official_credential": "RD, CDCES"
    },
    "taxonomies": [
        {
            "code": "133V00000X",
            "taxonomy_group": "",
            "desc": "Dietitian, Registered",
            "state": "NU",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Julie Catherine Costanzo, RD, LD
• Deerfield Optometry LLC
• Shirlie Antoinette Dowd Herbst, OD
• Dr. Jane M Salem PLLC
• Lindsey Ducharme, M.S.
• Margaret Elizabeth Flinton, OTR/L
• Allison Leigh Garrahy, OTR/L
• Sheehan Gendron, MS, LCMHC
• Robyn Agnes Giard, ND
• Harmony Medical PLLC

• Registered Dietitian in Deerfield, NH
• Providers in Deerfield, NH by specialty
• Registered Dietitian in New Hampshire

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