Gerrarda Concepta O'Beirne, B.D.S.,M.S.D.

Primary specialty

DentistTaxonomy code 122300000X

License

7333 Issued in WA

Practice address

720 Olive Way
Suite 810
Seattle, WA 98101-1878

Phone

(206) 628-0404

Fax

(206) 628-0024

NPI assigned

Nov 17, 2005

Last updated

Jul 13, 2026By the provider in NPPES

Sex

Female

Sole proprietor

No

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

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: No
• Hospice: Yes

Green means eligible to order or refer.

Opted out of Medicare

Yes, effective Mar 7, 2017 through Mar 7, 2027

Medicare enrollment (NPD)

Enrolled

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.

• Gerrarda C. O'Beirne

  dba Seattle Periodontics and Implant Dentistry

  • Periodontics
  • Seattle, WA
  • NPI 1548304033
  NPD (past) Authorized official
• Ryan Odonnell DDS PLLC

  dba Seattle Periodontics and Implant Dentistry

  • Periodontics
  • Seattle, WA
  • NPI 1952296709
  NPD (past)

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

{
    "created_epoch": "1132185600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1518949247",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "720 OLIVE WAY",
            "address_2": "SUITE 810",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981011878",
            "telephone_number": "206-628-0404",
            "fax_number": "206-628-0024"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "720 OLIVE WAY",
            "address_2": "SUITE 810",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981011878",
            "telephone_number": "206-628-0404",
            "fax_number": "206-628-0024"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "O'BEIRNE",
        "first_name": "GERRARDA",
        "middle_name": "CONCEPTA",
        "credential": "B.D.S.,M.S.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2005-11-17",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "122300000X",
            "taxonomy_group": "",
            "desc": "Dentist",
            "state": "WA",
            "license": "7333",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Amira Amar Nystrom, LMP
• Kristin Carr Nyweide White, M.D.
• Elisha Nziengui Boussengui, MD
• Zoe Nzimande, RDN
• Doris O Leary, REGISTERED COUNSELOR
• Anna Colette O'Boyle
• Mattie R O'Boyle
• Aishleen O'Brien, MFTA
• Amy O'Brien, L.M.T.
• Barbara Gustafson O'Brien, M.S.S.W.

• Dentist in Seattle, WA
• Providers in Seattle, WA by specialty
• Dentist in Washington

• 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.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring; Opt Out Affidavits.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.