Individual provider Active NPI

Derek Alexander Leiss, ND

  • Naturopath
  • Portland, OR
National Provider Identifier
1689399339
Registry record updated Oct 5, 2022
On this page

Key facts

NPPES NPI Registry
Primary specialty
NaturopathTaxonomy code 175F00000X
License
4474 Issued in OR
Practice address
819 SE Morrison St Ste 115
Portland, OR 97214-6308
Phone
(503) 956-9396
NPI assigned
Oct 5, 2022
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Oct 5, 2022

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
NaturopathGroup: 193400000X SINGLE SPECIALTY GROUP 175F00000X 4474 OR Primary

Addresses

Primary practice location

819 SE Morrison St Ste 115
Portland, OR 97214-6308

Mailing address

2722 NE 15TH Ave
Portland, OR 97212-3302
Phone (480) 262-6466

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Not enrolled

State licenses

LicenseStateTypeSpecialty
4474ORMDNaturopath

Practice roles

OrganizationSpecialtyStatusNew patients
The Rewilding Practice LLC PastSince Aug 25, 2025 Accepting new patients
Heart Spring Health LLC Naturopath PastSince Feb 9, 2025 Accepting new patients

Organizations & group practices 2

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.

NPI Registry JSON

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

{
    "created_epoch": "1664928000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1664928000000",
    "number": "1689399339",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2722 NE 15TH AVE",
            "city": "PORTLAND",
            "state": "OR",
            "postal_code": "972123302",
            "telephone_number": "480-262-6466"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "819 SE MORRISON ST STE 115",
            "city": "PORTLAND",
            "state": "OR",
            "postal_code": "972146308",
            "telephone_number": "503-956-9396"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LEISS",
        "first_name": "DEREK",
        "middle_name": "ALEXANDER",
        "name_prefix": "Dr.",
        "credential": "ND",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2022-10-05",
        "last_updated": "2022-10-05",
        "certification_date": "2022-10-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "175F00000X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Naturopath",
            "state": "OR",
            "license": "4474",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Portland, OR

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 5, 2022; 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.