Ms. Sonia Chessin Lac, LCSW
About this NPIWhat this record shows.
NPI 1306199336 is registered to Ms. Sonia Chessin Lac, LCSW, a Clinical Social Worker practising at 301 W Sussex Ave in Missoula, Montana. Clinical Social Worker is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Ms. Sonia Chessin Lac, LCSW has been enumerated in the National Provider Identifier (NPI) registry since 2012.
Medicare enrollment
This provider holds a Medicare enrollment on file with the Provider Enrollment, Chain and Ownership System (PECOS). Each enrollment carries a public Medicare Enrollment ID (ENRLMT_ID) used by billers and intermediaries.
Practitioner
- I20171120002249Clinical Social WorkerMT
Source: CMS PECOS public enrollment file.
Insurance & acceptsHow to confirm coverage.
The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans Ms. Sonia Chessin Lac, LCSW accepts. To confirm in-network status with your specific health plan, contact Ms. Sonia Chessin Lac, LCSW directly at (406) 370-5308.
Frequently asked
Yes. NPI 1306199336 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Clinical Social Worker is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy.
The CMS NPPES Public Registry at npiregistry.cms.hhs.gov is the authoritative source. FindMyNPI mirrors this dataset and refreshes monthly. For real-time verification, you can also call the provider's office at (406) 370-5308.
An individual healthcare provider has a single Type-1 NPI for life. Organisations can hold separate Type-2 NPIs per location, specialty, or sub-entity. Ms. Sonia Chessin Lac, LCSW is a Type-1 individual NPI.