Individual provider Active NPI

John Olaf Stampen

  • Mental Health Counselor
  • Milwaukee, WI
National Provider Identifier
1225821697
Registry record updated May 27, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Mental Health CounselorTaxonomy code 101YM0800X
Practice address
10012 W Capitol Dr Ste 101
Milwaukee, WI 53222-1300
Phone
(414) 810-4844
Fax
(414) 810-4845
NPI assigned
May 27, 2025
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on May 27, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Addiction (Substance Use Disorder) Counselor 101YA0400X
Mental Health Counselor 101YM0800X Primary

Addresses

Primary practice location

10012 W Capitol Dr Ste 101
Milwaukee, WI 53222-1300

Mailing address

2044 N Lake Dr
Milwaukee, WI 53202-1333
Phone (608) 698-5282

Other practice location 1

6416 S Howell Ave
Oak Creek, WI 53154-1104
Phone (414) 304-5713

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
West Grove Clinic, SC CurrentSince Oct 30, 2024 Accepting new patients

Locations

17 Park Pl
Ste 400
Appleton, WI 54914
Phone (920) 209-1765

1400 75th St
Kenosha, WI 53143
Phone (262) 697-1820

6416 S Howell Ave
Oak Creek, WI 53154
Phone (414) 304-5713

10012 W Capitol Dr
Ste 101
Wauwatosa, WI 53222
Phone (414) 810-4844

10012 W Capitol Dr
Wauwatosa, WI 53222
Phone (414) 810-4844

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": "1748304000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1748304000000",
    "number": "1225821697",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2044 N LAKE DR",
            "city": "MILWAUKEE",
            "state": "WI",
            "postal_code": "532021333",
            "telephone_number": "608-698-5282"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "10012 W CAPITOL DR STE 101",
            "city": "MILWAUKEE",
            "state": "WI",
            "postal_code": "532221300",
            "telephone_number": "414-810-4844",
            "fax_number": "414-810-4845"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "6416 S Howell Ave",
            "address_purpose": "LOCATION",
            "city": "Oak Creek",
            "state": "WI",
            "postal_code": "531541104",
            "country_code": "US",
            "telephone_number": "414-304-5713",
            "fax_number": "414-304-5721",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "STAMPEN",
        "first_name": "JOHN",
        "middle_name": "OLAF",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2025-05-27",
        "last_updated": "2025-05-27",
        "certification_date": "2025-05-27",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "101YA0400X",
            "taxonomy_group": "",
            "desc": "Counselor, Addiction (Substance Use Disorder)",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "101YM0800X",
            "taxonomy_group": "",
            "desc": "Counselor, Mental Health",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Milwaukee, WI

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 27, 2025; 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.