William Ira Bennett, M.D.
Psychiatry Physician · Cambridge, MA
William Ira Bennett, M.D. is a psychiatry physician with a practice address in Cambridge, Massachusetts, and NPI 1922068600, issued on Mar 25, 2006. Check the license (Massachusetts 73876, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- William Ira Bennett
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 73876 MA
Self-reported in NPPES; status is on the state search - Practice location
- 49 Hancock St, Cambridge, MA 02139
- Phone
- (617) 576-6199
- Enumerated
- Mar 25, 2006
- Record last updated
- Jul 19, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (617) 628-1617
- Medicaid ID
- 3124151 MA
- Entity
- Type 1 · individual
Also registered at 49 Hancock St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Stella Bae, M.D.Psychiatry Physician1003900192
- Jessica Barton, LICSWSocial Worker1366417701
- Elizabeth Bernstein, PH.D.Clinical Psychologist1891836169
- Wendy Caplan, LICSWSocial Worker1831384007
- Michael Clontz, MSW(LICSW)Clinical Social Worker1063651438
- Kunya Desjardins, PH.D.Clinical Psychologist1437330719
Verify William Ira Bennett in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 73876Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average psychiatry physician in 2024
18 Medicare Part D claims for 11 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
213 psychiatry physician records list a practice address in Cambridge
They are 213 of the 5,145 NPPES records with a practice address in Cambridge, and 2,736 psychiatry physician records in Massachusetts.
All 213 in Cambridge → All 2,736 in Massachusetts → Every provider in Cambridge →
Other psychiatry physician records in Massachusetts
- Karen Abdool, M.D., PH.DLynn, MA1942472824
- Harmony Abejuela, M.D.Quincy, MA1316259492
- Marielle Abell, PAAmherst, MA1275644072
- Steven Ablon, MDBoston, MA1083604839
- Keith Ablow, M.D.Newbury, MA1245423615
- Yousef Abou-Allaban, MDWalpole, MA1922040666
- Habiba Abozeid, MDBoston, MA1689408346
- Margarita Abramovich, MDPittsfield, MA1154883239
- Howard Abrams, MDSalem, MA1821102773
- David Abramson, MDCambridge, MA1376679787
Common questions
What is William Ira Bennett, M.D.'s NPI number?
William Ira Bennett, M.D.'s National Provider Identifier (NPI) is 1922068600, issued on Mar 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Ira Bennett, M.D. located?
The NPPES record lists a practice address at 49 Hancock St, Cambridge, MA, 02139. Phone: (617) 576-6199. Providers update this record themselves, so call before visiting.
How can I verify William Ira Bennett, M.D.'s license?
NPPES lists Massachusetts license number 73876, 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 Ira Bennett, M.D. prescribe under Medicare Part D?
In 2024, William Ira Bennett, M.D. had 18 Medicare Part D claims for 11 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.