Active NPI
Diane M Oman, MS LCSW
- Mental Health Counselor
- Waukesha, WI
National Provider Identifier
1346223740
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Mental Health Counselor
- Practice address
- 741 N Grand Ave
Ste 210
Waukesha, WI 53186-4820 - Phone
- (262) 547-2463
- Fax
- (262) 547-8002
- NPI assigned
- Nov 21, 2005
- Sex
- Female
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 3
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Mental Health Counselor | 101YM0800X | Primary | ||
| Professional Counselor | 101YP2500X | 481125 | WI | |
| Clinical Social Worker | 1041C0700X | 1674123 | WI |
Addresses
Primary practice location
741 N Grand Ave
Ste 210
Waukesha, WI 53186-4820
Mailing address
741 N Grand Ave
Ste 210
Waukesha, WI 53186-4820
Phone (262) 547-2463
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 39188900 | Medicaid | WI |
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)
- Enrolled
- Credentials
- Master of Science
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 481125 | WI | MD | Professional Counselor |
| 1674123 | WI | MD | Clinical Social Worker |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Catholic Charities of the Archdiocese of Milwaukee Inc | 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.
-
- Mental Health Clinic/Center (Including Community Mental Health Center)
- Waukesha, WI
- NPI 1053394841
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1132531200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1346223740",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "741 N GRAND AVE",
"address_2": "STE 210",
"city": "WAUKESHA",
"state": "WI",
"postal_code": "531864820",
"telephone_number": "262-547-2463",
"fax_number": "262-547-8002"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "741 N GRAND AVE",
"address_2": "STE 210",
"city": "WAUKESHA",
"state": "WI",
"postal_code": "531864820",
"telephone_number": "262-547-2463",
"fax_number": "262-547-8002"
}
],
"practiceLocations": [],
"basic": {
"last_name": "OMAN",
"first_name": "DIANE",
"middle_name": "M",
"credential": "MS LCSW",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2005-11-21",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "101YM0800X",
"taxonomy_group": "",
"desc": "Counselor, Mental Health",
"state": null,
"license": null,
"primary": true
},
{
"code": "101YP2500X",
"taxonomy_group": "",
"desc": "Counselor, Professional",
"state": "WI",
"license": "481125",
"primary": false
},
{
"code": "1041C0700X",
"taxonomy_group": "",
"desc": "Social Worker, Clinical",
"state": "WI",
"license": "1674123",
"primary": false
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "39188900",
"state": "WI"
}
],
"endpoints": [],
"other_names": []
}Other providers in Waukesha, WI
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.