Laurie K. Halversen, LCSW
Clinical Social Worker · Clearlake, CA
Laurie K. Halversen, LCSW is a clinical social worker with a practice address in Clearlake, California, and NPI 1356649545, issued on Mar 11, 2011. Check the license (California LCS 26339, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Laurie K. Halversen
- Credential
- LCSW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- LCS 26339 CA
Self-reported in NPPES; status is on the state search - Practice location
- 15630 18TH Ave, Clearlake, CA 95422
- Phone
- (707) 994-6486
- Enumerated
- Mar 11, 2011
- Record last updated
- Mar 11, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20240416001476); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 15630 18TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John ClarkeAnesthesiology Physician1053329359
- Martina Cordova, FNPFamily Nurse Practitioner1114793643
- Stephenie Hargrove, NPFamily Nurse Practitioner1053927608
- John Hewitt, MDEmergency Medicine Physician1902840176
- Thomas Kreck, MDCritical Care Medicine (Internal Medicine) Physician1457439200
- Linnea Lantz, DOEmergency Medicine Physician1841759974
Verify Laurie K. Halversen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license LCS 26339Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Adventist Health Clearlake Hospital Inc.Clearlake, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
20 clinical social worker records list a practice address in Clearlake
They are 20 of the 321 NPPES records with a practice address in Clearlake, and 36,261 clinical social worker records in California.
All 20 in Clearlake → All 36,261 in California → Every provider in Clearlake →
Other clinical social worker records in California
- Lynne Aalan, LCSWYountville, CA1417195710
- Ahmad Fahim AalemiSacramento, CA1033052410
- Rachel Aarons, MSW PHDSanta Barbara, CA1871687822
- Shari Aarons, LCSWTarzana, CA1467636845
- Mary Aarsheim, LCSWPenn Valley, CA1104192616
- Sandra Aase, LCSWRiverside, CA1699872325
- Maria Abaci, LCSWSan Rafael, CA1205161924
- Louisa AbadaOakland, CA1023502259
- Alejandro Abarca, LCSWSonora, CA1538184676
- Daisy Abarca, ACSWRoseville, CA1548124779
Common questions
What is Laurie K. Halversen, LCSW's NPI number?
Laurie K. Halversen, LCSW's National Provider Identifier (NPI) is 1356649545, issued on Mar 11, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Laurie K. Halversen, LCSW located?
The NPPES record lists a practice address at 15630 18TH Ave, Clearlake, CA, 95422. Phone: (707) 994-6486. Providers update this record themselves, so call before visiting.
How can I verify Laurie K. Halversen, LCSW's license?
NPPES lists California license number LCS 26339, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.