William Matthew Negreiros, DMD
Dentist · Lexington, MA
William Matthew Negreiros, DMD is a dentist with a practice address in Lexington, Massachusetts, and NPI 1275225583, issued on May 24, 2023. Check the license (Massachusetts DN1859874, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Matthew Negreiros
- Credential
- DMD
- Primary taxonomy
- Dentist 122300000X
- License number
- DN1859874 MA
Self-reported in NPPES; status is on the state search - Practice location
- 922 Waltham St Ste 202, Lexington, MA 02421
- Phone
- (781) 861-7645
- Enumerated
- May 24, 2023
- Record last updated
- Jul 21, 2023
- Entity
- Type 1 · individual
8 nearest dentist records → All 2,934 in Massachusetts → Look up another NPI →
Verify William Matthew Negreiros in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license DN1859874Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
About as many Medicare Part D claims as the average dentist in 2024
86 Medicare Part D claims for 31 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D.
Most prescribed
- Chlorhexidine Gluconate25 claims
- Amoxicillin23 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
William Matthew Negreiros among 2,934 dentist records in Massachusetts
William Matthew Negreiros, DMD is one of 2,934 dentist records with a practice address in Massachusetts. 58% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 81% of them.
- NPI issued2023 · 81% of these records are older, 12% newer
- In a Medicare fileYes · 58% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2023 · 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 122300000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
11 dentist records list a practice address in Lexington
They are 11 of the 1,467 NPPES records with a practice address in Lexington, and 2,934 dentist records in Massachusetts.
All 2,934 in Massachusetts → Every provider in Lexington → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Silva Andonyan, DMDLexington, MA 024211104143171
- Matthew Coletti, DMDLexington, MA 024211396236642
- Ann Demeranville, DMDLexington, MA 024211447478037
- Fawn Rosenberg, DMD, FAGDLexington, MA 024211265779581
- Yi Chi Wang, DDSLexington, MA 024211306921622
- Jessica Cheng, DMDLexington, MA 024201770018418
- Mira Khouzam, DMDLexington, MA 024201215482153
- Elfa Lino, DMDLexington, MA 024201518720127
Common questions
What is William Matthew Negreiros, DMD's NPI number?
William Matthew Negreiros, DMD's National Provider Identifier (NPI) is 1275225583, issued on May 24, 2023. An NPI identifies a provider in billing; it is not a license.
Where is William Matthew Negreiros, DMD located?
The NPPES record lists a practice address at 922 Waltham St Ste 202, Lexington, MA, 02421. Phone: (781) 861-7645. Providers update this record themselves, so call before visiting.
How can I verify William Matthew Negreiros, DMD's license?
NPPES lists Massachusetts license number DN1859874, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does William Matthew Negreiros, DMD prescribe under Medicare Part D?
In 2024, William Matthew Negreiros, DMD had 86 Medicare Part D claims for 31 beneficiaries; the average among dentist prescribers was 86. Part D covers Medicare prescriptions 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.