Mark Breinholt DDS PLLC

Primary specialty

Dental Clinic/CenterTaxonomy code 261QD0000X

Legal business name

MARK BREINHOLT DDS PLLC

Practice address

3400 Squalicum Pkwy Ste 103
Bellingham, WA 98225-1933

Phone

(360) 734-6728

NPI assigned

Feb 10, 2026

Last updated

Feb 10, 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

Dr. Mark Robert Breinholt, DDSNPI 1053003434

Title

Dentist

Phone

(360) 734-6728

Specialties & licenses 1

Addresses

Practitioners 2

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.

• Mark Robert Breinholt, DDS

  • Dentist
  • Bellingham, WA
  • NPI 1053003434
  NPD Authorized official
• Michael Henry Crowley, DDS

  • General Practice Dentistry
  • Bellingham, WA
  • NPI 1255414421
  NPD (past)

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

{
    "created_epoch": "1770681600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1770681600000",
    "number": "1457203945",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3400 SQUALICUM PKWY STE 103",
            "city": "BELLINGHAM",
            "state": "WA",
            "postal_code": "982251933",
            "telephone_number": "360-734-6728"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3400 SQUALICUM PKWY STE 103",
            "city": "BELLINGHAM",
            "state": "WA",
            "postal_code": "982251933",
            "telephone_number": "360-734-6728"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "MARK BREINHOLT DDS PLLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2026-02-10",
        "last_updated": "2026-02-10",
        "certification_date": "2026-02-10",
        "status": "A",
        "authorized_official_last_name": "BREINHOLT",
        "authorized_official_first_name": "MARK",
        "authorized_official_middle_name": "ROBERT",
        "authorized_official_title_or_position": "DENTIST",
        "authorized_official_telephone_number": "360-734-6728",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "DDS"
    },
    "taxonomies": [
        {
            "code": "261QD0000X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Dental",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Cheryl Lynn Marier, MD
• Marijoyce R. Leynes, DDS, MSD, P.S., Inc. (Cascade Oral Medicine Inc., P.S.)
• Marilene Silva (Empowered Force Counseling PLLC)
• Lauren Marino, LMP
• Ryan Marino, LMP
• Mark W. Sheafor, DPM, PS, Inc
• Mark W. Sheafor, DPM, PS, Inc.
• Nahid Markosian, PH.D.
• Jessie Marks, ARNP
• Richard Marquez

• Dental Clinic/Center in Bellingham, WA
• Providers in Bellingham, WA by specialty
• Dental Clinic/Center in Washington

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 10, 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.