William Knott Dilauro, D.O.
Psychiatry Physician · Webster, MA
William Knott Dilauro, D.O. is a psychiatry physician with a practice address in Webster, Massachusetts, and NPI 1558771949, issued on May 6, 2014. Check the license (Massachusetts 275161, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- William Knott Dilauro
- Credential
- D.O.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 275161 MA
Self-reported in NPPES; status is on the state search - Practice location
- 340 Thompson RD, Webster, MA 01570
- Phone
- (508) 640-2982
- Enumerated
- May 6, 2014
- Record last updated
- Feb 11, 2026
- Fax
- (508) 943-2605
- Medicare enrollment
- Enrolled (PECOS I20180830002876); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 2,736 in Massachusetts → Look up another NPI →
Also registered at 340 Thompson RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Dipavo Banerjee, DOPsychiatry Physician1356928972
- Negar Beheshti, M.D.Child & Adolescent Psychiatry Physician1225295207
- Heather Birt, CNPPsychiatric/Mental Health Nurse Practitioner1710687090
- Daryl Blaney, MDPsychiatry Physician1780095091
Verify William Knott Dilauro in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 275161Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average psychiatry physician in 2024
222 Medicare Part D claims for 51 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
Most prescribed
- Gabapentin20 claims
- Clonazepam18 claims
- Quetiapine Fumarate18 claims
- Hydroxyzine Hcl16 claims
- Trazodone Hcl13 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.
The MIPS final score for 2023 (Medicare payment program): 97 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 one group practice
- Umass Memorial Medical Group IncWebster, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Knott Dilauro among 2,736 psychiatry physician records in Massachusetts
William Knott Dilauro, D.O. is one of 2,736 psychiatry physician records with a practice address in Massachusetts. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 76% of them.
- NPI issued2014 · 76% of these records are older, 22% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 45% of these records are
- Graduated2014 · median 2005 among the 1,219 with a school on file
- Record last updated2026 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
6 psychiatry physician records list a practice address in Webster
They are 6 of the 190 NPPES records with a practice address in Webster, and 2,736 psychiatry physician records in Massachusetts.
All 2,736 in Massachusetts → Every provider in Webster → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Mohammad Ali, M.D.Webster, MA 015701932640125
- Dipavo Banerjee, DOWebster, MA 015701356928972
- Daryl Blaney, MDWebster, MA 015701780095091
- Rebecca Peak, M.D.Webster, MA 015701376771055
- Aminadav Zakai, MDWebster, MA 015701609851575
- Bela Bochkarev, M.D.Uxbridge, MA 015691174669360
- Sandra Felder, M.D.Upton, MA 015681164583548
- David Mirsky, MDUpton, MA 015681295898401
Common questions
What is William Knott Dilauro, D.O.'s NPI number?
William Knott Dilauro, D.O.'s National Provider Identifier (NPI) is 1558771949, issued on May 6, 2014. An NPI identifies a provider in billing; it is not a license.
Where is William Knott Dilauro, D.O. located?
The NPPES record lists a practice address at 340 Thompson RD, Webster, MA, 01570. Phone: (508) 640-2982. Providers update this record themselves, so call before visiting.
How can I verify William Knott Dilauro, D.O.'s license?
NPPES lists Massachusetts license number 275161, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Knott Dilauro, D.O. prescribe under Medicare Part D?
In 2024, William Knott Dilauro, D.O. had 222 Medicare Part D claims for 51 beneficiaries; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.
What is William Knott Dilauro, D.O.'s MIPS final score?
The 2023 MIPS final score is 97 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.