Individual provider Active NPI

Janet Kass, LCSW

  • Clinical Social Worker
  • Mill Valley, CA
National Provider Identifier
1013018647
Registry record updated Jan 16, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Clinical Social WorkerTaxonomy code 1041C0700X
Practice address
222 Mountain View Ave
Mill Valley, CA 94941-1743
Phone
(510) 417-6732
Fax
(888) 965-0584
NPI assigned
Sep 26, 2006
Sex
Female
Sole proprietor
Yes

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
Mental Health Counselor 101YM0800X R032617-1 NY
Clinical Social Worker 1041C0700X Primary

Addresses

Primary practice location

222 Mountain View Ave
Mill Valley, CA 94941-1743

Mailing address

222 Mountain View Ave
Mill Valley, CA 94941-1743
Phone (510) 417-6732

Other identifiers 2

IdentifierTypeStateIssuer
7482980OtherNYEMPIRE PLAN
000135468OtherNYEXCELLUS BLUE CROSS

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: No
  • Power mobility devices: No
  • Hospice: No
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20260401001650 CA Practitioner - Clinical Social Worker 3375538747 Practice locations: Mill Valley, CA

Care Compare profile

Medicare Care Compare
Specialty
Clinical Social Worker
Education
Other, 1986
Medicare assignment
Accepts the Medicare-approved amount as payment in full

Practice addresses (Care Compare)

222 Mountain View Ave
Mill Valley, CA 94941-1743
Phone (510) 417-6732

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

State licenses

LicenseStateTypeSpecialty
R032617-1NYMDMental Health Counselor

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1159228800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1768521600000",
    "number": "1013018647",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "222 MOUNTAIN VIEW AVE",
            "city": "MILL VALLEY",
            "state": "CA",
            "postal_code": "949411743",
            "telephone_number": "510-417-6732",
            "fax_number": "888-965-0584"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "222 MOUNTAIN VIEW AVE",
            "city": "MILL VALLEY",
            "state": "CA",
            "postal_code": "949411743",
            "telephone_number": "510-417-6732",
            "fax_number": "888-965-0584"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KASS",
        "first_name": "JANET",
        "credential": "LCSW",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2006-09-26",
        "last_updated": "2026-01-16",
        "certification_date": "2026-01-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "101YM0800X",
            "taxonomy_group": "",
            "desc": "Counselor, Mental Health",
            "state": "NY",
            "license": "R032617-1",
            "primary": false
        },
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "EMPIRE PLAN",
            "identifier": "7482980",
            "state": "NY"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "EXCELLUS BLUE CROSS",
            "identifier": "000135468",
            "state": "NY"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Mill Valley, CA

Sources for this page

Verify at the official NPI Registry.