Rebecca Knapp, M.D.
Psychiatry Physician · Worcester, MA
Rebecca Knapp, M.D. is a psychiatry physician with a practice address in Worcester, Massachusetts, and NPI 1609854983, issued on Jan 6, 2006. Check the license (Massachusetts 73340, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Rebecca Knapp
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 73340 MA
Self-reported in NPPES; status is on the state search - Practice location
- 55 Lake Ave N, Worcester, MA 01655
- Phone
- (508) 856-2537
- Enumerated
- Jan 6, 2006
- Entity
- Type 1 · individual
Also registered at 55 Lake Ave N
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nawal Aamir, MDInternal Medicine Physician1588248926
- Amarys Abadie, CRNACertified Registered Nurse Anesthetist1992936843
- Paula Abate, NPPediatric Nurse Practitioner1336265909
- Aly AbayazeedDiagnostic Radiology Physician1821221946
- Zainab AbbasInternal Medicine Physician1609028000
- Mary-Alice Abbott, MDPediatrics Physician1982799417
Verify Rebecca Knapp in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 73340Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
41% fewer Medicare Part D claims than the average psychiatry physician in 2024
592 Medicare Part D claims for 24 beneficiaries, against an average of 1,010 among the 32,287 providers of this specialty who prescribed in Part D.
Most prescribed
- Clozapine66 claims
- Lorazepam33 claims
- Fluoxetine Hcl32 claims
- Lamotrigine30 claims
- Oxcarbazepine30 claims
- Clonazepam28 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.
128 psychiatry physician records list a Worcester practice address
They are 128 of the 13,166 NPPES records with a Worcester practice address, and 2,637 psychiatry physician records in Massachusetts.
All 128 in Worcester → All 2,637 in Massachusetts → Every provider in Worcester →
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 Rebecca Knapp, M.D.'s NPI number?
Rebecca Knapp, M.D.'s National Provider Identifier (NPI) is 1609854983, issued on Jan 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Rebecca Knapp, M.D. located?
The NPPES record lists a practice address at 55 Lake Ave N, Worcester, MA, 01655. Phone: (508) 856-2537. Providers update this record themselves, so call before visiting.
How can I verify Rebecca Knapp, M.D.'s license?
NPPES lists Massachusetts license number 73340, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://www.mass.gov/orgs/board-of-registration-in-medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Rebecca Knapp, M.D. prescribe under Medicare Part D?
In 2024, Rebecca Knapp, M.D. had 592 Medicare Part D claims for 24 beneficiaries; the average among psychiatry physician prescribers was 1,010. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.