Mark Smyczynski, M.D.
NPI 1871661603 · Radiation Oncology Physician · Worcester, MA
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Smyczynski, M.D. is a Radiation Oncology Physician provider in Worcester, MA (NPI 1871661603).
Provider details
- NPI number
- 1871661603
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 79962 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (1)
- 275 Nichols RdFitchburg, MA 01420-1919Phone: (978) 343-5196
Registry dates
- Enumerated
- 2006-12-01
- Last updated
- 2020-11-19
- Certified
- 2020-11-19
Frequently asked questions
- What is Mark Smyczynski's NPI number?
- Mark Smyczynski's National Provider Identifier (NPI) is 1871661603, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Smyczynski's specialty?
- Mark Smyczynski is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Smyczynski located?
- Mark Smyczynski's practice location on file with NPPES is 55 Lake Ave N, Worcester, MA 01655-0002.
- What is Mark Smyczynski's phone number?
- The practice phone number listed in the NPPES registry for Mark Smyczynski is (774) 442-5551.
- Does Mark Smyczynski accept Medicare?
- Mark Smyczynski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Smyczynski's NPI active?
- Yes — Mark Smyczynski's NPI (1871661603) is active in the NPPES registry as of the last update on 2020-11-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.