Brian Marcus Osullivan, PHD
Psychologist · Northborough, MA
Brian Marcus Osullivan, PHD is a psychologist with a practice address in Northborough, Massachusetts, and NPI 1467419168, issued on Apr 27, 2006. Check the license (Massachusetts 3157, 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.
- Name
- Brian Marcus Osullivan
- Credential
- PHD
- Primary taxonomy
- Psychologist 103T00000X
- License number
- 3157 MA
Self-reported in NPPES; status is on the state search - Practice location
- 2 Whitney St, Northborough, MA 01532
- Phone
- (508) 831-3030
- Enumerated
- Apr 27, 2006
- Record last updated
- May 29, 2018 (not updated in 8 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest psychologist records → All 2,367 in Massachusetts → Look up another NPI →
Verify Brian Marcus Osullivan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 3157Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Brian Marcus Osullivan among 2,367 psychologist records in Massachusetts
Brian Marcus Osullivan, PHD 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 71% newer
- In a Medicare fileNo · 11% of these records are
- In the CMS Doctors and Clinicians fileNo · 21% of these records are
- Record last updated2018 · 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).
Psychologist providers in Massachusetts
There are 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 Northborough → Psychologist nationwide →
The 8 psychologist records with the nearest ZIP codes
- Michael Gareau, PH.D.Northborough, MA 015321487727111
- Paula-Ann Pricken, PH.D.Northborough, MA 015321245390418
- Ayelet Katzelnik, PSYDNorth Grafton, MA 015361083027569
- Elinor Waite, PHDMillbury, MA 015271548137292
- Tracey Rocha Phelon, PH.D.Leicester, MA 015241538583745
- Kristin Borozny, PSYDRutland, MA 015431427305481
- C. Graham Campbell, PH.D.Holden, MA 015201548347412
- Amy CirilloHolden, MA 015201558868489
Common questions
What is Brian Marcus Osullivan, PHD's NPI number?
Brian Marcus Osullivan, PHD's National Provider Identifier (NPI) is 1467419168, issued on Apr 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Brian Marcus Osullivan, PHD located?
The NPPES record lists a practice address at 2 Whitney St, Northborough, MA, 01532. Phone: (508) 831-3030. Providers update this record themselves, so call before visiting.
How can I verify Brian Marcus Osullivan, PHD's license?
NPPES lists Massachusetts license number 3157, 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.
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.