What is Sidney Mackinnon's NPI number?

Sidney Mackinnon's National Provider Identifier (NPI) is 1588416945, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Sidney Mackinnon's specialty?

Sidney Mackinnon is listed in the NPPES registry with a primary specialty of Dentist (Dental Providers).

Where is Sidney Mackinnon located?

Sidney Mackinnon's practice location on file with NPPES is 1 Kneeland St, Boston, MA 02111-1527.

What is Sidney Mackinnon's phone number?

The practice phone number listed in the NPPES registry for Sidney Mackinnon is (617) 636-6828.

Is Sidney Mackinnon's NPI active?

Yes — Sidney Mackinnon's NPI (1588416945) is active in the NPPES registry as of the last update on 2026-04-24.

IndividualActive

Sidney Mackinnon

NPI 1588416945 · Dentist · Boston, MA

Sidney Mackinnon is a Dentist provider in Boston, MA (NPI 1588416945).

Provider details

NPI number: 1588416945
Entity type: Individual
Primary specialty: DentistDental Providers
Sex: Female
Sole proprietor: No
License: DN10000834 (MA)

Specialties & taxonomies

DentistPrimary122300000XLicense DN10000834 (MA)
Dental Providers

Profile Score

Established profile(57/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
2 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

1 Kneeland St

Boston, MA 02111-1527

Phone: (617) 636-6828

Street-level locationGet directions

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Mailing address