Active NPI
Erich Lenk, MSW
- Clinical Social Worker
- Arcata, CA
National Provider Identifier
1376485854
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Clinical Social Worker
- License
- ASW134309
- Practice address
- 920 Samoa Blvd Ste 209
Arcata, CA 95521-6696 - Phone
- (707) 940-9528
- NPI assigned
- Apr 6, 2026
- Last updated
- Apr 29, 2026
- Sex
- Male
- 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 |
|---|---|---|---|---|
| Clinical Social Worker | 1041C0700X | ASW134309 | CA | Primary |
Addresses
Primary practice location
920 Samoa Blvd Ste 209
Arcata, CA 95521-6696
Mailing address
PO Box 1254
Willow Creek, CA 95573-1254
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
| License | State | Type | Specialty |
|---|---|---|---|
| ASW134309 | CA | MD | Clinical Social Worker |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Six Rivers Wellness | Past | Accepting new patients | |
| Michael N Sonn, Licensed Clinical Social Worker, PC | Past | 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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.
-
dba Six Rivers Wellness
- Community/Behavioral Health Agency
- Arcata, CA
- NPI 1144959370
-
- Marriage & Family Therapist
- Arcata, CA
- NPI 1144149139
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1775433600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1777420800000",
"number": "1376485854",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "PO BOX 1254",
"city": "WILLOW CREEK",
"state": "CA",
"postal_code": "955731254"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "920 SAMOA BLVD STE 209",
"city": "ARCATA",
"state": "CA",
"postal_code": "955216696",
"telephone_number": "707-940-9528"
}
],
"practiceLocations": [],
"basic": {
"last_name": "LENK",
"first_name": "ERICH",
"credential": "MSW",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2026-04-06",
"last_updated": "2026-04-29",
"certification_date": "2026-04-29",
"status": "A"
},
"taxonomies": [
{
"code": "1041C0700X",
"taxonomy_group": "",
"desc": "Social Worker, Clinical",
"state": "CA",
"license": "ASW134309",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Arcata, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 29, 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.