NPPES file of Aug 9, 2026

Brian Michael Terhaar, MS

Addiction (Substance Use Disorder) Counselor · Worcester, MA

Brian Michael Terhaar, MS is an addiction (substance use disorder) counselor with a practice address in Worcester, Massachusetts, and NPI 1497462089, issued on Nov 2, 2022. Check the license 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
1497462089
Name
Brian Michael Terhaar
Credential
MS
Primary taxonomy
Addiction (Substance Use Disorder) Counselor 101YA0400X
Practice location
2 Brooks St, Worcester, MA 01606
Phone
(774) 272-0011
Enumerated
Nov 2, 2022
Record last updated
Nov 2, 2022
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 2 Brooks St

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

  1. Rosemary Tierney, MS ED., BCBA, CAGSBehavior Analyst1649987876

Verify Brian Michael Terhaar in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Massachusetts board licenses this professionCheck 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
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Addiction (Substance Use Disorder) Counselor providers in Massachusetts

There are 2,375 addiction (substance use disorder) counselor records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 2,375 in Massachusetts → Every provider in Worcester →

Other addiction (substance use disorder) counselor records in Massachusetts

  1. William AbbatePlymouth, MA1568013944
  2. Brianna Abbott, LMHC LADC1Springfield, MA1225503725
  3. Erik AbelWoburn, MA1295163822
  4. Kimberly AbissoLynn, MA1588206403
  5. Elonzo Abraham, M.ED, CACIBoston, MA1609189760
  6. Heidi AbramsBrewster, MA1245332048
  7. Maury AbramsEasthampton, MA1629096649
  8. Jose Abreu, BALowell, MA1063531424
  9. Kelli AccardiLawrence, MA1023417813
  10. Nicholas AcquadroWoburn, MA1346851532

Common questions

What is Brian Michael Terhaar, MS's NPI number?

Brian Michael Terhaar, MS's National Provider Identifier (NPI) is 1497462089, issued on Nov 2, 2022. An NPI identifies a provider in billing; it is not a license.

Where is Brian Michael Terhaar, MS located?

The NPPES record lists a practice address at 2 Brooks St, Worcester, MA, 01606. Phone: (774) 272-0011. Providers update this record themselves, so call before visiting.

How can I verify Brian Michael Terhaar, MS'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.

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.