Guardian Pharmacy of Washington, LLC

Primary specialty

Long Term Care PharmacyTaxonomy code 3336L0003X

Legal business name

GUARDIAN PHARMACY OF WASHINGTON, LLC

Doing business as

Mercury Pharmacy Services

Practice address

22316 70TH Ave W Ste E
Mountlake Terrace, WA 98043-2184

Phone

(425) 673-5200

Fax

(425) 673-5230

NPI assigned

Oct 29, 2025

Organization subpart

No

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

Authorized official

Name

Stephen BoulangerNPI 1902847296

Title

President

Phone

(425) 673-5200

Specialties & licenses 5

Addresses

Other names 1

• MERCURY PHARMACY SERVICES Doing business as

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in WA2 enrollments

Enrollment records 2

These CMS records do not include an NPI. They are shown because their name and street address match this provider’s.

Medicare medical equipment & supply locations

Member of 1

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

• Mercury Pharmacy Services Inc

  dba Mercury Pharmacy Services

  • Long Term Care Pharmacy
  • Mountlake Terrace, WA
  • NPI 1073659694

  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.

• Stephen Lawrence Boulanger, RPH.

  • Pharmacist
  • Mountlake Terrace, WA
  • NPI 1902847296
  NPD Authorized official

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

{
    "created_epoch": "1761696000000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1769731200000",
    "number": "1790653798",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "22316 70TH AVE W STE E",
            "city": "MOUNTLAKE TERRACE",
            "state": "WA",
            "postal_code": "980432184",
            "telephone_number": "425-673-5200",
            "fax_number": "425-673-5230"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "22316 70TH AVE W STE E",
            "city": "MOUNTLAKE TERRACE",
            "state": "WA",
            "postal_code": "980432184",
            "telephone_number": "425-673-5200",
            "fax_number": "425-673-5230"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "GUARDIAN PHARMACY OF WASHINGTON, LLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2025-10-29",
        "last_updated": "2026-01-30",
        "certification_date": "2026-01-30",
        "status": "A",
        "authorized_official_last_name": "BOULANGER",
        "authorized_official_first_name": "STEPHEN",
        "authorized_official_title_or_position": "PRESIDENT",
        "authorized_official_telephone_number": "425-673-5200"
    },
    "taxonomies": [
        {
            "code": "332B00000X",
            "taxonomy_group": "",
            "desc": "Durable Medical Equipment & Medical Supplies",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "333600000X",
            "taxonomy_group": "",
            "desc": "Pharmacy",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "3336C0003X",
            "taxonomy_group": "",
            "desc": "Pharmacy, Community/Retail Pharmacy",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "3336C0004X",
            "taxonomy_group": "",
            "desc": "Pharmacy, Compounding Pharmacy",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "3336L0003X",
            "taxonomy_group": "",
            "desc": "Pharmacy, Long Term Care Pharmacy",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "OTHERS",
            "endpointTypeDescription": "Other URL",
            "endpoint": "https://www.mercuryrx.com/",
            "affiliation": "N",
            "endpointDescription": "Health Information Exchange",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "Health Information Exchange",
            "address_1": "22316 70th Ave W Ste E",
            "city": "Mountlake Terrace",
            "state": "WA",
            "country_code": "US",
            "postal_code": "980432184",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": [
        {
            "organization_name": "MERCURY PHARMACY SERVICES",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

• Paige Gresens
• Audrey Katherine Grettie, LMHC, SUDP, CN, LMT
• Tyler Joseph Griffith, CPHT
• Anne Catherine Grisham-Pleas, LMHC, CDP
• Guardian Manor LLC
• Terrell Gunter, LMSW
• Lorine Guzman, MS
• Lynn Hackstaff, LICSW
• Krista Lynn Haglund, R.PH.
• Henoke Haile

• Long Term Care Pharmacy in Mountlake Terrace, WA
• Providers in Mountlake Terrace, WA by specialty
• Long Term Care Pharmacy in Washington

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 30, 2026; 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.