William Keith Lagasse, LCSW
Clinical Social Worker · Lewiston, ME
William Keith Lagasse, LCSW is a clinical social worker with a practice address in Lewiston, Maine, and NPI 1871716522, issued on Apr 11, 2007. Check the license (Maine LC11562, as entered in NPPES) with the Maine board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Keith Lagasse
- Credential
- LCSW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- LC11562 ME
Self-reported in NPPES; status is on the state search - Practice location
- 105 Middle St Ste 2, Lewiston, ME 04240
- Phone
- (207) 576-9645
- Enumerated
- Apr 11, 2007
- Record last updated
- May 8, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (207) 784-6021
- Medicare enrollment
- Enrolled (PECOS I20080725000108); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 3,673 in Maine → Look up another NPI →
Verify William Keith Lagasse in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maine board licenses this profession
Search for license LC11562Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 98.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- MainehealthPortland, ME
- The Counseling Center OF Nashua IncSouth Portland, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Keith Lagasse among 3,673 clinical social worker records in Maine
William Keith Lagasse, LCSW is one of 3,673 clinical social worker records with a practice address in Maine. 19% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 21% of them.
- NPI issued2007 · 21% of these records are older, 67% newer
- In a Medicare fileYes · 19% of these records are
- In the CMS Doctors and Clinicians fileYes · 26% of these records are
- Graduated2005 · median 2008 among the 939 with a school on file
- Record last updated2008 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1041C0700X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
155 clinical social worker records list a practice address in Lewiston
They are 155 of the 1,728 NPPES records with a practice address in Lewiston, and 3,673 clinical social worker records in Maine.
All 3,673 in Maine → Every provider in Lewiston → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Tracy Audet, LCSW LADCLewiston, ME 042401285696799
- Janice Bureau, LCSW, ACSWLewiston, ME 042401699769265
- Joel Burian, LCSWLewiston, ME 042401114909595
- Clayne Chase, LCSWLewiston, ME 042401912956459
- Jane Hersey, LCSWLewiston, ME 042401023067469
- Shana Kelley-Cohen, LCSWLewiston, ME 042401831201391
- Aaron Landry, LCSWLewiston, ME 042401508851528
- Evelyn Lent, LCSWLewiston, ME 042401871609586
Common questions
What is William Keith Lagasse, LCSW's NPI number?
William Keith Lagasse, LCSW's National Provider Identifier (NPI) is 1871716522, issued on Apr 11, 2007. An NPI identifies a provider in billing; it is not a license.
Where is William Keith Lagasse, LCSW located?
The NPPES record lists a practice address at 105 Middle St Ste 2, Lewiston, ME, 04240. Phone: (207) 576-9645. Providers update this record themselves, so call before visiting.
How can I verify William Keith Lagasse, LCSW's license?
NPPES lists Maine license number LC11562, as entered by the provider. Search the Maine board that licenses this profession; the NPPES record confirms identity only.
What is William Keith Lagasse, LCSW's MIPS final score?
The 2023 MIPS final score is 98.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.