William J. A. O'Brien, PSY.D
Psychologist · Westborough, MA
William J. A. O'Brien, PSY.D is a psychologist with a practice address in Westborough, Massachusetts, and NPI 1255740254, issued on Aug 5, 2014. Check the license with the Massachusetts board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- William J. A. O'Brien
- Credential
- PSY.D
- Primary taxonomy
- Psychologist 103T00000X
- Practice location
- 288 Lyman St, Westborough, MA 01581
- Phone
- (508) 475-2626
- Enumerated
- Aug 5, 2014
- Record last updated
- Aug 5, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20160310002242); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest psychologist records → All 2,367 in Massachusetts → Look up another NPI →
Also registered at 288 Lyman St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- James Antonellis, LMHCMental Health Counselor1376076190
- Charlotte BoutilletteOccupational Therapy Assistant1629129234
- Monica Ferraro, PH.D.Clinical Psychologist1316437551
- Kerry Higgins, LICSWClinical Social Worker1841435534
- Ganam Konikara, CPNP-PCPediatric Nurse Practitioner1982375796
- Beth Anne Lundberg, MSWClinical Social Worker1942346044
Verify William J. A. O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
William J. A. O'Brien among 2,367 psychologist records in Massachusetts
William J. A. O'Brien, PSY.D is one of 2,367 psychologist records with a practice address in Massachusetts. 11% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2014, is newer than 62% of them.
- NPI issued2014 · 62% of these records are older, 35% newer
- In a Medicare fileNo · 11% of these records are
- In the CMS Doctors and Clinicians fileYes · 21% of these records are
- Graduated2010 · median 1997 among the 487 with a school on file
- Record last updated2014 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103T00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
12 psychologist records list a practice address in Westborough
They are 12 of the 565 NPPES records with a practice address in Westborough, and 2,367 psychologist records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 2,367 in Massachusetts → Every provider in Westborough → Psychologist nationwide →
The 8 psychologist records with the nearest ZIP codes
- Miriam Aframe, PSY.D.Westborough, MA 015811710478953
- Dawna Gabowitz, PH.D.Westborough, MA 015811720183841
- Kenneth Holbert, PH.D.Westborough, MA 015811841360146
- Emily Marsick, CAGS LMHCWestborough, MA 015811104938620
- Cesar Melendez-Villegas, PSY.DWestborough, MA 015811922388792
- Ronnie Miller, PSY.D.Westborough, MA 015811841227097
- Nadene Moll, PSYDWestboro, MA 015811235202102
- Jane Plummer, PSY.D.Westborough, MA 015811497813174
Common questions
What is William J. A. O'Brien, PSY.D's NPI number?
William J. A. O'Brien, PSY.D's National Provider Identifier (NPI) is 1255740254, issued on Aug 5, 2014. An NPI identifies a provider in billing; it is not a license.
Where is William J. A. O'Brien, PSY.D located?
The NPPES record lists a practice address at 288 Lyman St, Westborough, MA, 01581. Phone: (508) 475-2626. Providers update this record themselves, so call before visiting.
How can I verify William J. A. O'Brien, PSY.D's license?
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.
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.