Registry data as of Aug 27, 2026

Sidney Kadish, M.D.

Radiation Oncology Physician · Worcester, MA

Sidney Kadish, M.D. is a radiation oncology physician with a practice address in Worcester, Massachusetts, and NPI 1659355915, issued on Dec 1, 2005. Check the license on the Massachusetts Board of Registration in Medicine; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, loaded Aug 27, 2026 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1659355915
Name
Sidney Kadish
Credential
M.D.
Primary taxonomy
Radiation Oncology Physician 2085R0001X
Practice location
55 Lake Ave N, Worcester, MA 01655
Phone
(774) 442-5551
Enumerated
Dec 1, 2005
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
Download card Updates feed

Also registered at 55 Lake Ave N

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Nawal Aamir, MDInternal Medicine Physician1588248926
  2. Amarys Abadie, CRNACertified Registered Nurse Anesthetist1992936843
  3. Paula Abate, NPPediatric Nurse Practitioner1336265909
  4. Aly AbayazeedDiagnostic Radiology Physician1821221946
  5. Zainab AbbasInternal Medicine Physician1609028000
  6. Mary-Alice Abbott, MDPediatrics Physician1982799417

Verify Sidney Kadish in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMassachusetts Board of Registration in MedicineCheck the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Open the Massachusetts license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Radiation Oncology Physician providers in Massachusetts

There are 203 radiation oncology physician records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

Other radiation oncology physician records in Massachusetts

  1. Anthony Abner, MDCambridge, MA1487629127
  2. Matthew Abrams, M.D.Boston, MA1104189117
  3. Todd Adams, M.D.Medford, MA1972751493
  4. Jenna Adleman, MDBoston, MA1528613833
  5. Nima Aghdam, M.D.Boston, MA1942696752
  6. Michele Albert, MDBoston, MA1285691972
  7. Brian Alexander, M.D.Boston, MA1275511149
  8. Aaron Allen, MDBoston, MA1396849527
  9. Erik Anderson, M.D. PH.D.Boston, MA1528488269
  10. Joseph Aronovitz, M.D.Boston, MA1316995418

Common questions

What is Sidney Kadish, M.D.'s NPI number?

Sidney Kadish, M.D.'s National Provider Identifier (NPI) is 1659355915, issued on Dec 1, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Sidney Kadish, M.D. located?

The NPPES record lists a practice address at 55 Lake Ave N, Worcester, MA, 01655. Phone: (774) 442-5551. Providers update this record themselves, so call before visiting.

How can I verify Sidney Kadish, M.D.'s license?

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.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.