What is Kristen O'Brien's NPI number?

Kristen O'Brien's National Provider Identifier (NPI) is 1215456512, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Kristen O'Brien's specialty?

Kristen O'Brien is listed in the NPPES registry with a primary specialty of Dentist (Dental Providers).

Where is Kristen O'Brien located?

Kristen O'Brien's practice location on file with NPPES is 348 Boston Rd, Billerica, MA 01821-1812.

What is Kristen O'Brien's phone number?

The practice phone number listed in the NPPES registry for Kristen O'Brien is (978) 667-5807.

Is Kristen O'Brien's NPI active?

Yes — Kristen O'Brien's NPI (1215456512) is active in the NPPES registry as of the last update on 2018-03-17.

IndividualActive

Kristen O'Brien, D.M.D.

NPI 1215456512 · Dentist · Billerica, MA

Kristen O'Brien, D.M.D. is a Dentist provider in Billerica, MA (NPI 1215456512).

Provider details

NPI number: 1215456512
Entity type: Individual
Primary specialty: DentistDental Providers
Credential: D.M.D.
Sex: Female
Sole proprietor: Yes
License: DN1857693 (MA)

Specialties & taxonomies

DentistPrimary122300000XLicense DN1857693 (MA)
Dental Providers

Profile Score

Established profile(74/100 index)

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

Registry tenure38% of score
8 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

348 Boston Rd

Billerica, MA 01821-1812

Phone: (978) 667-5807

Street-level locationGet directions

More MA providers

Mailing address

7 Sherwood Rd

Wilmington, MA 01887-2817

Additional practice locations (1)

16 Haverhill St
Andover, MA 01810-3002
Phone: (978) 470-2233

Enumerated: 2017-09-18
Last updated: 2018-03-17

Frequently asked questions

What is Kristen O'Brien's NPI number?: Kristen O'Brien's National Provider Identifier (NPI) is 1215456512, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Kristen O'Brien's specialty?: Kristen O'Brien is listed in the NPPES registry with a primary specialty of Dentist (Dental Providers).
Where is Kristen O'Brien located?: Kristen O'Brien's practice location on file with NPPES is 348 Boston Rd, Billerica, MA 01821-1812.
What is Kristen O'Brien's phone number?: The practice phone number listed in the NPPES registry for Kristen O'Brien is (978) 667-5807.
Is Kristen O'Brien's NPI active?: Yes — Kristen O'Brien's NPI (1215456512) is active in the NPPES registry as of the last update on 2018-03-17.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.