Caitlin Marianna Williams, PHARMD

Primary specialty

Pharmacist Clinician (PhC)/ Clinical Pharmacy SpecialistTaxonomy code 1835P0018X

License

PH61575306 Issued in WA

Practice address

301 S 320TH St
Federal Way, WA 98003-5200

Phone

(253) 874-7000

NPI assigned

Sep 4, 2023

Last updated

Jan 29, 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

Medicare enrollment (NPD)

Not enrolled

Credentials

Doctor of Pharmacy

State licenses

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

{
    "created_epoch": "1693785600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1769644800000",
    "number": "1679359947",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "301 S 320TH ST",
            "city": "FEDERAL WAY",
            "state": "WA",
            "postal_code": "980035200",
            "telephone_number": "253-874-7000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "301 S 320TH ST",
            "city": "FEDERAL WAY",
            "state": "WA",
            "postal_code": "980035200",
            "telephone_number": "253-874-7000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WILLIAMS",
        "first_name": "CAITLIN",
        "middle_name": "MARIANNA",
        "name_prefix": "Dr.",
        "credential": "PHARMD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2023-09-04",
        "last_updated": "2026-01-29",
        "certification_date": "2026-01-29",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1835P0018X",
            "taxonomy_group": "",
            "desc": "Pharmacist, Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist",
            "state": "WA",
            "license": "PH61575306",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Alison Katherine Willam, M.D.
• Debra Marie Willems, LMP
• Khalia Monique Williams-O'Neal
• Arlie Serene Williams, CD
• Barbara Bassett Williams, OT
• Cecillia Williams
• Christina M. Williams
• Denise Williams, LMP
• Elah Valiette Williams, RN
• Josiah Williams

• Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist in Federal Way, WA
• Providers in Federal Way, WA by specialty
• Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist in Washington

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 29, 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.