Merrimack Valley Endoscopy, LLC

Primary specialty

Ambulatory Surgical Clinic/CenterTaxonomy code 261QA1903X

Legal business name

MERRIMACK VALLEY ENDOSCOPY, LLC

Practice address

1 Parkway
Haverhill, MA 01830-6278

Phone

(978) 521-3235

Fax

(978) 521-3236

NPI assigned

Oct 3, 2005

Last updated

Oct 10, 2025By 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

Lindsay Gainer

Title

President & Coo

Phone

(857) 282-3914

Specialties & licenses 1

Addresses

Other identifiers 4

Medicare fee-for-service enrollment

Enrolled in MA

Enrollment records 1

Listed as

Merrimack Valley Endoscopy CenterCCN 22C0001038

Medicare certification status

ActiveFrom the Provider of Services file

Tax ID family

Merrimack Valley Endoscopy Center LLC2 organizations share this tax ID, including this one

Other organizations with this tax ID 1

Organizations that report the same tax identification number in the National Provider Directory.

• Merrimack Valley Endoscopy Center Tdi

  • Multi-Specialty Clinic/Center
  • Haverhill, MA
  • NPI 1437359155
  NPD tax ID

Member of 1

Organizations this organization is a member of, according to the National Provider Directory.

• Mass General Brigham Community Physicians Inc.

  dba Westford Internal Medicine

  • Internal Medicine Physician
  • Westford, MA
  • NPI 1497216279

  Member Of

  NPD member

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.

• Paula Boulanger, M.D.

  • Pediatrics Physician
  • Haverhill, MA
  • NPI 1154323251
  NPD (past)

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

{
    "created_epoch": "1128297600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1760054400000",
    "number": "1417944778",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1 PARKWAY",
            "city": "HAVERHILL",
            "state": "MA",
            "postal_code": "018306278",
            "telephone_number": "978-521-3235",
            "fax_number": "978-521-3236"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1 PARKWAY",
            "city": "HAVERHILL",
            "state": "MA",
            "postal_code": "018306278",
            "telephone_number": "978-521-3235",
            "fax_number": "978-521-3236"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "MERRIMACK VALLEY ENDOSCOPY, LLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2005-10-03",
        "last_updated": "2025-10-10",
        "certification_date": "2025-10-10",
        "status": "A",
        "authorized_official_last_name": "GAINER",
        "authorized_official_first_name": "LINDSAY",
        "authorized_official_title_or_position": "PRESIDENT & COO",
        "authorized_official_telephone_number": "857-282-3914"
    },
    "taxonomies": [
        {
            "code": "261QA1903X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Ambulatory Surgical",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "TUFTS",
            "identifier": "693806",
            "state": "MA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "NEIGHBORHOOD HEALTH PLAN",
            "identifier": "0033919",
            "state": "MA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BCBS",
            "identifier": "M88027",
            "state": "MA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "HPHC",
            "identifier": "903698",
            "state": "MA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Merrimack Behavioral Partners LLC
• Merrimack Psychiatric Associates, PC
• Merrimack Street Orthodontics, P.C. (Smile Braces)
• Merrimack Valley Child & Adolescent Health
• Merrimack Valley Endoscopy Center Tdi
• Merrimack Valley Foot Specialists, Inc
• Merrimack Valley Health Care Group
• Merrimack Valley Hospital
• Merrimack Valley Hospital, a Steward Family Hospital, Inc.
• Merrimack Valley Hospital, a Steward Family Hospital, Inc.

• Ambulatory Surgical Clinic/Center in Haverhill, MA
• Providers in Haverhill, MA by specialty
• Ambulatory Surgical Clinic/Center in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 10, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.