William Nieves, MSW,BA,LMSW
Social Worker · Waterbury, CT
William Nieves, MSW,BA,LMSW is a social worker with a practice address in Waterbury, Connecticut, and NPI 1457420473, issued on Nov 6, 2006. Check the license (Connecticut 000095, as entered in NPPES) with the Connecticut board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- William Nieves
- Credential
- MSW,BA,LMSW
- Primary taxonomy
- Social Worker 104100000X
- License number
- 000095 CT
Self-reported in NPPES; status is on the state search - Practice location
- 141 E Main St, Waterbury, CT 06702
- Phone
- (203) 574-9000
- Enumerated
- Nov 6, 2006
- Record last updated
- Jun 4, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (203) 574-9006
- Entity
- Type 1 · individual
8 nearest social worker records → All 2,124 in Connecticut → Look up another NPI →
Also registered at 141 E Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William Nieves in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Connecticut board licenses this profession
Search for license 000095Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
William Nieves among 2,124 social worker records in Connecticut
William Nieves, MSW,BA,LMSW is one of 2,124 social worker records with a practice address in Connecticut. 7% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than under 1% of them.
- NPI issued2006 · under 1% of these records are older, 94% newer
- In a Medicare fileNo · 7% of these records are
- In the CMS Doctors and Clinicians fileNo · 10% of these records are
- Record last updated2021 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 104100000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
195 social worker records list a practice address in Waterbury
They are 195 of the 3,148 NPPES records with a practice address in Waterbury, and 2,124 social worker records in Connecticut. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 2,124 in Connecticut → Every provider in Waterbury → Social Worker nationwide →
The 8 social worker records with the nearest ZIP codes
- Marion Alamo, MSWWaterbury, CT 067021407092307
- Margarita AlvarezWaterbury, CT 067021104967397
- Evelina BulaWaterbury, CT 067021346490455
- Nerina CarrollWaterbury, CT 067021972698801
- Sonya Cloud, LMSW,MSW,BAWaterbury, CT 067021487960795
- Vania Estes, MSW,LMSWWaterbury, CT 067021619299484
- Paget HaylonWaterbury, CT 067021518115666
- Dahivsa MercadoWaterbury, CT 067021760523039
Common questions
What is William Nieves, MSW,BA,LMSW's NPI number?
William Nieves, MSW,BA,LMSW's National Provider Identifier (NPI) is 1457420473, issued on Nov 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Nieves, MSW,BA,LMSW located?
The NPPES record lists a practice address at 141 E Main St, Waterbury, CT, 06702. Phone: (203) 574-9000. Providers update this record themselves, so call before visiting.
How can I verify William Nieves, MSW,BA,LMSW's license?
NPPES lists Connecticut license number 000095, as entered by the provider. Search the Connecticut 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. 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.