Kristen O'Brien, D.M.D.
Dentist · Billerica, MA
Kristen O'Brien, D.M.D. is a dentist with a practice address in Billerica, Massachusetts, and NPI 1215456512, issued on Sep 18, 2017. Check the license (Massachusetts DN1857693, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kristen O'Brien
- Credential
- D.M.D.
- Primary taxonomy
- Dentist 122300000X
- License number
- DN1857693 MA
Self-reported in NPPES; status is on the state search - Practice location
- 348 Boston RD, Billerica, MA 01821
- Phone
- (978) 667-5807
- Enumerated
- Sep 18, 2017
- Entity
- Type 1 · individual
Verify Kristen O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license DN1857693Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
86% fewer Medicare Part D claims than the average dentist in 2024
13 Medicare Part D claims, against an average of 90 among the 51,502 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
11 dentist records list a Billerica practice address
They are 11 of the 236 NPPES records with a Billerica practice address, and 2,858 dentist records in Massachusetts.
All 11 in Billerica → All 2,858 in Massachusetts → Every provider in Billerica →
Other dentist records in Massachusetts
- Heidi Aaronson, D.M.D.Wellesley, MA1134375652
- Asli Aban Tiltay, DMDSaugus, MA1174328785
- Firas AbbasBoston, MA1093577603
- Hebatallah Abbas, DMDArlington, MA1679923809
- Selda AbbasianNew Bedford, MA1700690708
- Roya Abbott, D.M.D.Hudson, MA1891712550
- Micheal Abboud, DMDQuincy, MA1336781533
- Muhammad Abdel-Rahim, DMDIndian Orchard, MA1548589690
- Abdalla AbdelaalAdams, MA1528991668
- Jehad Abdelgader, DLLNorth Adams, MA1841027158
Common questions
What is Kristen O'Brien, D.M.D.'s NPI number?
Kristen O'Brien, D.M.D.'s National Provider Identifier (NPI) is 1215456512, issued on Sep 18, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Kristen O'Brien, D.M.D. located?
The NPPES record lists a practice address at 348 Boston RD, Billerica, MA, 01821. Phone: (978) 667-5807. Providers update this record themselves, so call before visiting.
How can I verify Kristen O'Brien, D.M.D.'s license?
NPPES lists Massachusetts license number DN1857693, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Kristen O'Brien, D.M.D. prescribe under Medicare Part D?
In 2024, Kristen O'Brien, D.M.D. had 13 Medicare Part D claims; the average among dentist prescribers was 90. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.