NPPES file of Aug 9, 2026

Richard J. Horner, M.D.

Hematology & Oncology Physician · Worcester, MA

Richard J. Horner, M.D. is a hematology & oncology physician with a practice address in Worcester, Massachusetts, and NPI 1104800465, issued on Dec 1, 2005. Check the license (Massachusetts 34230, as entered in NPPES) 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, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1104800465
Name
Richard J. Horner
Credential
M.D.
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License number
34230 MA
Self-reported in NPPES; status is on the state search
Practice location
119 Belmont St, Worcester, MA 01605
Phone
(508) 334-6093
Enumerated
Dec 1, 2005
Record last updated
Dec 10, 2010 (not updated in 16 years: call before relying on the address or phone)
Medicaid ID
3185729 MA
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

8 nearest hematology & oncology physician records → All 461 in Massachusetts → Look up another NPI →

Also registered at 119 Belmont St

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

  1. Elisa Abdulhayoglu, MDNeonatal-Perinatal Medicine Physician1053346007
  2. Edward Adams, MDInternal Medicine Physician1881157444
  3. Redwan Ahmed, MDFamily Medicine Physician1356830103
  4. Hashim Al-Ani, MDInternal Medicine Physician1235863358
  5. Muhammad Albanna, MDInternal Medicine Physician1194404681
  6. Yury Aleksandrovich, MDInternal Medicine Physician1912469388

Verify Richard J. Horner in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
    Search for license 34230    Check 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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

Richard J. Horner among 461 hematology & oncology physician records in Massachusetts

Richard J. Horner, M.D. is one of 461 hematology & oncology physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 86% newer
  • In a Medicare fileNo · 75% of these records are
  • In the CMS Doctors and Clinicians fileNo · 66% of these records are
  • Record last updated2010 · 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 207RH0003X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hematology & Oncology Physician providers in Massachusetts

There are 461 hematology & oncology physician records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 461 in Massachusetts → Every provider in Worcester → Hematology & Oncology Physician nationwide →

The 8 hematology & oncology physician records with the nearest ZIP codes

  1. Vijay Kasturi, M.D.Worcester, MA 016051821071077
  2. Nahida Islam, M.D.Worcester, MA 016061568669646
  3. Edison Tsui, MDWorcester, MA 016061568876340
  4. Mohammed Wazir, M.D.Worcester, MA 016061144672064
  5. Kevin Brown, MDWorcester, MA 016081760401384
  6. Saleem Khanani, MDWorcester, MA 016081255306643
  7. James Rooney, M.D.Worcester, MA 016081215983358
  8. Tony Samaha, MDWorcester, MA 016081891767208

Common questions

What is Richard J. Horner, M.D.'s NPI number?

Richard J. Horner, M.D.'s National Provider Identifier (NPI) is 1104800465, issued on Dec 1, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Richard J. Horner, M.D. located?

The NPPES record lists a practice address at 119 Belmont St, Worcester, MA, 01605. Phone: (508) 334-6093. Providers update this record themselves, so call before visiting.

How can I verify Richard J. Horner, M.D.'s license?

NPPES lists Massachusetts license number 34230, 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.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.