Active NPI
Leah Mary Niehaus, LCSW
- Mental Health Counselor
- Hermosa Beach, CA
National Provider Identifier
1831309673
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Mental Health Counselor
- License
- LCS 21766
- Practice address
- 2200 Pacific Coast Hwy Ste 218
Hermosa Beach, CA 90254-2701 - Phone
- (310) 363-0741
- NPI assigned
- May 23, 2007
- 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 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Mental Health Counselor | 101YM0800X | LCS 21766 | CA | Primary |
Addresses
Primary practice location
2200 Pacific Coast Hwy Ste 218
Hermosa Beach, CA 90254-2701
Mailing address
2200 Pacific Coast Hwy Ste 218
Hermosa Beach, CA 90254-2701
Phone (310) 363-0741
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
- Opted out of Medicare
- Yes, effective Dec 27, 2023 through Dec 27, 2027
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Not enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| LCS 21766 | CA | MD | Mental Health Counselor |
| 21766 | CA | MD | Speech-Language Pathologist |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1179878400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1774396800000",
"number": "1831309673",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "2200 PACIFIC COAST HWY STE 218",
"city": "HERMOSA BEACH",
"state": "CA",
"postal_code": "902542701",
"telephone_number": "310-363-0741"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "2200 PACIFIC COAST HWY STE 218",
"city": "HERMOSA BEACH",
"state": "CA",
"postal_code": "902542701",
"telephone_number": "310-363-0741"
}
],
"practiceLocations": [],
"basic": {
"last_name": "NIEHAUS",
"first_name": "LEAH",
"middle_name": "MARY",
"name_prefix": "Mrs.",
"credential": "LCSW",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2007-05-23",
"last_updated": "2026-03-25",
"certification_date": "2026-03-25",
"status": "A"
},
"taxonomies": [
{
"code": "101YM0800X",
"taxonomy_group": "",
"desc": "Counselor, Mental Health",
"state": "CA",
"license": "LCS 21766",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Hermosa Beach, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 25, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Opt Out Affidavits.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.