NPIMap

Individual provider Active NPI

Stefanie C Werdmuller Von Elgg, IBCLC

  • Lactation Consultant (Non-RN)
  • South Pasadena, CA
National Provider Identifier
1154042091
Registry record updated Jan 16, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Lactation Consultant (Non-RN)Taxonomy code 174N00000X
Practice address
1138 Diamond Ave Apt a
South Pasadena, CA 91030-5719
Phone
(626) 831-0068
NPI assigned
Sep 8, 2022
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 16, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Doula 374J00000X CA
Lactation Consultant (Non-RN) 174N00000X Primary

Addresses

Primary practice location

1138 Diamond Ave Apt a
South Pasadena, CA 91030-5719

Mailing address

1138 Diamond Ave Apt a
South Pasadena, CA 91030-5719
Phone (626) 831-0068

Electronic endpoints 1

TypeEndpointUseAffiliation
SOAP URL https://secure.simplepractice.com/calendar/appointments Direct

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

Practice roles

OrganizationSpecialtyStatusNew patients
Milk Bar Collective, Inc. Lactation Consultant, Non-RN Past Accepting new patients

Organizations & group practices 1

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": "1662595200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1768521600000",
    "number": "1154042091",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1138 DIAMOND AVE APT A",
            "city": "SOUTH PASADENA",
            "state": "CA",
            "postal_code": "910305719",
            "telephone_number": "626-831-0068"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1138 DIAMOND AVE APT A",
            "city": "SOUTH PASADENA",
            "state": "CA",
            "postal_code": "910305719",
            "telephone_number": "626-831-0068"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WERDMULLER VON ELGG",
        "first_name": "STEFANIE",
        "middle_name": "C",
        "credential": "IBCLC",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2022-09-08",
        "last_updated": "2026-01-16",
        "certification_date": "2026-01-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "374J00000X",
            "taxonomy_group": "",
            "desc": "Doula",
            "state": "CA",
            "license": null,
            "primary": false
        },
        {
            "code": "174N00000X",
            "taxonomy_group": "",
            "desc": "Lactation Consultant, Non-RN",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "SOAP",
            "endpointTypeDescription": "SOAP URL",
            "endpoint": "https://secure.simplepractice.com/calendar/appointments",
            "affiliation": "N",
            "endpointDescription": "HITRUST HIPAA protected space to communicate with clients and professionals",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "SOAP notes; direct messaging",
            "address_1": "1138 Diamond Ave Apt A",
            "city": "South Pasadena",
            "state": "CA",
            "country_code": "US",
            "postal_code": "910305719",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in South Pasadena, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 16, 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.