William Patrick Obrien, DMD
General Practice Dentistry · Leominster, MA
William Patrick Obrien, DMD is a general practice dentistry with a practice address in Leominster, Massachusetts, and NPI 1710991278, issued on Jul 28, 2006. Check the license (Massachusetts 16626, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Patrick Obrien
- Credential
- DMD
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 16626 MA
Self-reported in NPPES; status is on the state search - Practice location
- 1079 Central Street, Leominster, MA 01453
- Phone
- (978) 840-2740
- Enumerated
- Jul 28, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (978) 840-3480
- Entity
- Type 1 · individual
Verify William Patrick Obrien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 16626Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
71% fewer Medicare Part D claims than the average general practice dentistry in 2024
24 Medicare Part D claims for 20 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Amoxicillin21 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.
33 general practice dentistry records list a practice address in Leominster
They are 33 of the 1,151 NPPES records with a practice address in Leominster, and 3,489 general practice dentistry records in Massachusetts.
All 33 in Leominster → All 3,489 in Massachusetts → Every provider in Leominster →
Other general practice dentistry records in Massachusetts
- Mark Aaron, DMDGreat Barrington, MA1902020902
- Heidi Aaronson, D.M.D.Wellesley, MA1134375652
- Jamil Abbasy, DMDSouthampton, MA1992988026
- Sama Abdul-Aziz, DMDBoston, MA1427543610
- Muhannad AbdulghaniBrockton, MA1326806654
- Noor AbdulkareemQuincy, MA1932809662
- Asma AbdullahShrewsbury, MA1225301237
- Abdulaziz Abdulwahed, BDSBoston, MA1730637414
- Sabahat Abernethy, DMD, CAGSAbington, MA1518089903
- Rana Abood, DMDBoston, MA1376660936
Common questions
What is William Patrick Obrien, DMD's NPI number?
William Patrick Obrien, DMD's National Provider Identifier (NPI) is 1710991278, issued on Jul 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Patrick Obrien, DMD located?
The NPPES record lists a practice address at 1079 Central Street, Leominster, MA, 01453. Phone: (978) 840-2740. Providers update this record themselves, so call before visiting.
How can I verify William Patrick Obrien, DMD's license?
NPPES lists Massachusetts license number 16626, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does William Patrick Obrien, DMD prescribe under Medicare Part D?
In 2024, William Patrick Obrien, DMD had 24 Medicare Part D claims for 20 beneficiaries; the average among general practice dentistry prescribers was 83. 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.