Erin Ashley Christmas, NP

Primary specialty

Psychiatric/Mental Health Nurse PractitionerTaxonomy code 363LP0808X

License

10823-33 Issued in WI

Practice address

930 W Historic Mitchell St
Milwaukee, WI 53204-3533

Phone

(414) 383-9526

Fax

(414) 649-2711

NPI assigned

Mar 24, 2021

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

Enrolled in WI

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

Specialty

Nurse Practitioner

Education

University of Wisconsin School of Medicine, 2020

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Columbia St Marys Hospital Milwaukee IncGroup PAC ID 5890604722, 311 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Ascension Columbia St Marys Hospital Milwaukee Hospital, Milwaukee, WI, CCN 520051

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

State licenses

Practice roles

Locations

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.

• Columbia St. Mary'S Hospital Milwaukee, Inc

  • Multi-Specialty Clinic/Center
  • Milwaukee, WI
  • NPI 1023064482
  Medicare reassignment Care Compare group NPD
• Columbia St. Mary'S Hospital Milwaukee Inc

  • Psychiatric Hospital Unit
  • Mequon, WI
  • NPI 1417600909
  NPD

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Columbia St. Mary'S Hospital Milwaukee, Inc.

  • General Acute Care Hospital
  • Milwaukee, WI
  • NPI 1871656082
  Care Compare affiliation

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

{
    "created_epoch": "1616544000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1785196800000",
    "number": "1003493487",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "930 W HISTORIC MITCHELL ST",
            "city": "MILWAUKEE",
            "state": "WI",
            "postal_code": "532043533",
            "telephone_number": "414-383-9526",
            "fax_number": "414-649-2711"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "930 W HISTORIC MITCHELL ST",
            "city": "MILWAUKEE",
            "state": "WI",
            "postal_code": "532043533",
            "telephone_number": "414-383-9526",
            "fax_number": "414-649-2711"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CHRISTMAS",
        "first_name": "ERIN",
        "middle_name": "ASHLEY",
        "credential": "NP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2021-03-24",
        "last_updated": "2026-07-28",
        "certification_date": "2026-07-28",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LP0808X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": "WI",
            "license": "10823-33",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Katherine Christianson, MD
• Lydia Christianson
• Luke Christie
• Sarah Christie
• Tracy Christman
• Sandra M Christoffel, RD
• Brian Christofferson, PA-C
• Hannah Jenny Christopherson, LPC
• Elene Christopoulos, PA
• Jorja Chrnelich, APNP

• Psychiatric/Mental Health Nurse Practitioner in Milwaukee, WI
• Providers in Milwaukee, WI by specialty
• Psychiatric/Mental Health Nurse Practitioner in Wisconsin

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 28, 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.
• 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.