Joseph E. O'Brien, D.M.D.
Dentist · Newton, MA
Joseph E. O'Brien, D.M.D. is a dentist with a practice address in Newton, Massachusetts, and NPI 1881758118, issued on Dec 21, 2006. Check the license (Massachusetts 21660, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Joseph E. O'Brien
- Credential
- D.M.D.
- Primary taxonomy
- Dentist 122300000X
- License number
- 21660 MA
Self-reported in NPPES; status is on the state search - Practice location
- 1400 Centre St, Newton, MA 02459
- Phone
- (617) 965-2440
- Enumerated
- Dec 21, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (617) 965-2423
- Entity
- Type 1 · individual
8 nearest dentist records → All 2,934 in Massachusetts → Look up another NPI →
Also registered at 1400 Centre St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lynn Baden, M.D.Dermatology Physician1417929977
- Victoria Cafferelli, PTPhysical Therapist1679749634
- Carol Ivan, PH.D.Clinical Psychologist1588745301
- Steven Levitt, D.M.D.General Practice Dentistry1952373706
- Marie-Christine NadonPhysician Assistant1093426306
- Amy Portnoy, R.D.H.Dental Hygienist1033280995
Verify Joseph E. 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 21660Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.0 times the Medicare Part D claims of the average dentist in 2024
175 Medicare Part D claims for 120 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin136 claims
- Azithromycin19 claims
- Cephalexin11 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.
Joseph E. O'Brien among 2,934 dentist records in Massachusetts
Joseph E. O'Brien, D.M.D. is one of 2,934 dentist records with a practice address in Massachusetts. 58% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 88% newer
- In a Medicare fileYes · 58% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2007 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 122300000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Dentist providers in Massachusetts
There are 2,934 dentist records in Massachusetts.
All 2,934 in Massachusetts → Every provider in Newton → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Aditi Bhatt, D.M.DNewton, MA 024591194270686
- Vicki Cohn, DDSNewton, MA 024591285749515
- Robert Csillag, DMDNewton Centre, MA 024591740285279
- Midoriko Ishigaki, DMDNewton, MA 024591912158569
- Robert Kaplan, DMDNewton Centre, MA 024591740284637
- Kenneth Kornman, DDSNewton, MA 024591184128399
- Yali LouNewton Center, MA 024591780281774
- Jeffrey Mason, DMDNewton, MA 024591346412814
Common questions
What is Joseph E. O'Brien, D.M.D.'s NPI number?
Joseph E. O'Brien, D.M.D.'s National Provider Identifier (NPI) is 1881758118, issued on Dec 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joseph E. O'Brien, D.M.D. located?
The NPPES record lists a practice address at 1400 Centre St, Newton, MA, 02459. Phone: (617) 965-2440. Providers update this record themselves, so call before visiting.
How can I verify Joseph E. O'Brien, D.M.D.'s license?
NPPES lists Massachusetts license number 21660, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Joseph E. O'Brien, D.M.D. prescribe under Medicare Part D?
In 2024, Joseph E. O'Brien, D.M.D. had 175 Medicare Part D claims for 120 beneficiaries; the average among dentist prescribers was 86. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 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.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.