Peter Masiakos, MD
NPI 1598749285 · Surgery Physician · Boston, MA
Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Peter Masiakos, MD is a Surgery Physician provider in Boston, MA (NPI 1598749285).
Provider details
- NPI number
- 1598749285
- Entity type
- Individual
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 216940 (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
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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
Registry dates
- Enumerated
- 2005-12-06
- Last updated
- 2012-11-30
Frequently asked questions
- What is Peter Masiakos's NPI number?
- Peter Masiakos's National Provider Identifier (NPI) is 1598749285, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Peter Masiakos's specialty?
- Peter Masiakos is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Peter Masiakos located?
- Peter Masiakos's practice location on file with NPPES is 55 Fruit St, Boston, MA 02114-2696.
- What is Peter Masiakos's phone number?
- The practice phone number listed in the NPPES registry for Peter Masiakos is (617) 726-8839.
- Does Peter Masiakos accept Medicare?
- Peter Masiakos is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Peter Masiakos's NPI active?
- Yes — Peter Masiakos's NPI (1598749285) is active in the NPPES registry as of the last update on 2012-11-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.