Data from the NPPES registry. May not reflect recent changes — verify at nppes.cms.hhs.gov.
MR. MARK MASON MATTHIESSEN
ActiveMR. MARK MASON MATTHIESSEN is a 2255R0406X healthcare provider located in WORCESTER, Massachusetts. NPI 1164373676 is currently active in the NPPES registry. Verify at CMS.
2255R0406X · WORCESTER, MA
Registration Details
- NPI Number
- 1164373676
- Provider Type
- Individual
- Gender
- Male
- NPI Issued
- Feb 9, 2026 (0.55222005786422 yrs)
- Last Updated
- Feb 9, 2026
Practice Information
- Address
-
377 PLANTATION STWORCESTER, MA, 016052245Browse MA providers · Browse ZIP 01605
- Phone
- 4135844040
- Primary Specialty
-
2255R0406X
2255R0406X
Other 2255R0406X Providers in WORCESTER, MA
| Name | Credential | NPI |
|---|---|---|
| LENORE MARTIN | — | 1437509213 |
Data sourced from the NPPES National Provider Identifier registry. This information is for informational purposes only and is not a substitute for verifying credentials with the appropriate licensing authority. For official verification, use the NPPES NPI Registry or the relevant state medical board.