Marshall Katzen, MD
Orthopaedic Surgery Physician · Worcester, MA
Marshall Katzen, MD is an orthopaedic surgery physician with a practice address in Worcester, Massachusetts, and NPI 1326140682, issued on Sep 5, 2006. Check the license (Massachusetts 43593, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Marshall Katzen
- Credential
- MD
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License number
- 43593 MA
Self-reported in NPPES; status is on the state search - Practice location
- 119 Belmont St, Worcester, MA 01605
- Phone
- (508) 334-1955
- Enumerated
- Sep 5, 2006
- Record last updated
- Mar 7, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (508) 334-9762
- Medicaid IDs
- 110006346A MA
0177709 MA - Medicare enrollment
- Enrolled (PECOS I20060419000560); accepts Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 1972
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 692 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.
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Verify Marshall Katzen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 43593Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024
24 Medicare Part D claims for 19 beneficiaries, against an average of 346 among the 16,516 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.
One hospital affiliation
- Martha's Vineyard Hospital IncOak Bluffs, MA · Critical Access Hospitals4 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Marshall Katzen among 692 orthopaedic surgery physician records in Massachusetts
Marshall Katzen, MD is one of 692 orthopaedic surgery physician records with a practice address in Massachusetts. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 52% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1972 · median 2004 among the 441 with a school on file
- Record last updated2016 · 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 207X00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Surgery Physician providers in Massachusetts
There are 692 orthopaedic surgery physician records in Massachusetts.
All 692 in Massachusetts → Every provider in Worcester → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Daniel Aaron, M.D.Worcester, MA 016051518184605
- David Ayers, M.D.Worcester, MA 016051235129594
- Norman Beisaw, M.D.Worcester, MA 016051720062961
- Thomas Breen, M.D.Worcester, MA 016051205810017
- Patrick Connolly, M.D.Worcester, MA 016051730170358
- Peyton Hays, M.D.Worcester, MA 016051912059429
- Hwa Hsieh, M.D.Worcester, MA 016051518941640
- George Lewinnek, MDWorcester, MA 016051750480349
Common questions
What is Marshall Katzen, MD's NPI number?
Marshall Katzen, MD's National Provider Identifier (NPI) is 1326140682, issued on Sep 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Marshall Katzen, MD located?
The NPPES record lists a practice address at 119 Belmont St, Worcester, MA, 01605. Phone: (508) 334-1955. Providers update this record themselves, so call before visiting.
How can I verify Marshall Katzen, MD's license?
NPPES lists Massachusetts license number 43593, 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 Marshall Katzen, MD prescribe under Medicare Part D?
In 2024, Marshall Katzen, MD had 24 Medicare Part D claims for 19 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. 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.