NPPES file of Aug 9, 2026

Michael John O'Brien, DDS

Dentist · Northampton, MA

Michael John O'Brien, DDS is a dentist with a practice address in Northampton, Massachusetts, and NPI 1164448635, issued on Jul 15, 2006. Check the license (Massachusetts 13519, as entered in NPPES) with the Massachusetts board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1164448635
Name
Michael John O'Brien
Credential
DDS
Primary taxonomy
Dentist 122300000X
License number
13519 MA
Self-reported in NPPES; status is on the state search
Practice location
41 Locust St, Northampton, MA 01060
Phone
(413) 586-0716
Enumerated
Jul 15, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 41 Locust St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Ali Kasemkhani, D.M.D.Dentist1588808380
  2. Ashlee McGan, DCChiropractor1639846256
  3. Daniel Shaver, D.C.Sports Physician Chiropractor1487815379

Verify Michael John O'Brien in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
    Search for license 13519    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Massachusetts license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Dentist providers in Massachusetts

There are 2,934 dentist records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 2,934 in Massachusetts → Every provider in Northampton →

Other dentist records in Massachusetts

  1. Asli Aban Tiltay, DMDSaugus, MA1174328785
  2. Firas AbbasBoston, MA1093577603
  3. Hebatallah Abbas, DMDArlington, MA1679923809
  4. Selda AbbasianNew Bedford, MA1700690708
  5. Roya Abbott, D.M.D.Hudson, MA1891712550
  6. Micheal Abboud, DMDQuincy, MA1336781533
  7. Muhammad Abdel-Rahim, DMDIndian Orchard, MA1548589690
  8. Abdalla AbdelaalAdams, MA1528991668
  9. Jehad Abdelgader, DLLNorth Adams, MA1841027158
  10. Shimaa AbdelhadyQuincy, MA1013849694

Common questions

What is Michael John O'Brien, DDS's NPI number?

Michael John O'Brien, DDS's National Provider Identifier (NPI) is 1164448635, issued on Jul 15, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Michael John O'Brien, DDS located?

The NPPES record lists a practice address at 41 Locust St, Northampton, MA, 01060. Phone: (413) 586-0716. Providers update this record themselves, so call before visiting.

How can I verify Michael John O'Brien, DDS's license?

NPPES lists Massachusetts license number 13519, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity 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. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.