Charles E Williamson, NP

Primary specialty

Psychiatric/Mental Health Nurse PractitionerTaxonomy code 363LP0808X

License

202114724NP-PP Issued in OR

Practice address

2119 NE Halsey St
Portland, OR 97232-1522

Phone

(503) 975-9398

Fax

(503) 221-8320

NPI assigned

Aug 2, 2008

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in CA

Eligible to order & refer

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

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Credentials

Master of Arts, Nurse Practitioner

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: charleswilliamson@org211.direct.charmhealth.com

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• UCSF Medical Group Business Services

  • Internal Medicine Physician
  • San Francisco, CA
  • NPI 1477624104

  Nurse Practitioner

  Medicare reassignment NPD
• University of California San Francisco

  • Pediatrics Physician
  • San Francisco, CA
  • NPI 1861578973
  Medicare reassignment NPD
• Bywater Health, LLC

  • Primary Care Clinic/Center
  • Portland, OR
  • NPI 1356192652
  NPD Authorized official
• Fora Health Inc.

  • Substance Abuse Rehabilitation Facility
  • Portland, OR
  • NPI 1033968193
  NPD
• Fora Health Inc.

  • Mental Health Clinic/Center (Including Community Mental Health Center)
  • Portland, OR
  • NPI 1245378546
  NPD
• UCSF Medical Group Business Services

  • Health Service Clinic/Center
  • San Francisco, CA
  • NPI 1194115246
  NPD
• University of California San Francisco

  • Internal Medicine Physician
  • San Francisco, CA
  • NPI 1164512851
  NPD
• University of California San Francisco

  • Community/Retail Pharmacy
  • San Francisco, CA
  • NPI 1659141711
  NPD
• Stanford Health Care

  • General Acute Care Hospital
  • Stanford, CA
  • NPI 1437292927
  NPD (past)

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

{
    "created_epoch": "1217635200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1759276800000",
    "number": "1740446335",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2119 NE HALSEY ST",
            "city": "PORTLAND",
            "state": "OR",
            "postal_code": "972321522",
            "telephone_number": "503-975-9398",
            "fax_number": "503-221-8320"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2119 NE HALSEY ST",
            "city": "PORTLAND",
            "state": "OR",
            "postal_code": "972321522",
            "telephone_number": "503-975-9398",
            "fax_number": "503-221-8320"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WILLIAMSON",
        "first_name": "CHARLES",
        "middle_name": "E",
        "credential": "NP",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2008-08-02",
        "last_updated": "2025-10-01",
        "certification_date": "2025-10-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LA2200X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Adult Health",
            "state": "OR",
            "license": "202114724NP-PP",
            "primary": false
        },
        {
            "code": "363LP0808X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": "OR",
            "license": "202114724NP-PP",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Aimee Williamson
• Angela Leanne Williamson, OTR/L
• Ariel Williamson, PHD
• Bradley Williamson, PMHNP-BC
• Casey Williamson, M.D.
• Donna Louise Williamson
• Kathrine Margret Williamson
• Kyndal Williamson
• Loretta Arlene Williamson
• Patricia Wallace Williamson, LPC

• Psychiatric/Mental Health Nurse Practitioner in Portland, OR
• Providers in Portland, OR by specialty
• Psychiatric/Mental Health Nurse Practitioner in Oregon

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 1, 2025; 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.