NPPES file of Aug 9, 2026

Russell P. Mackay

Mental Health Counselor · Boston, MA

Russell P. Mackay is a mental health counselor with a practice address in Boston, Massachusetts, and NPI 1790877090, issued on Sep 28, 2006. Check the license (Massachusetts LMHC10002806, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1790877090
Name
Russell P. Mackay
Primary taxonomy
Mental Health Counselor 101YM0800X
License numbers
LMHC10002806 MA
5935490-6009 UT
Self-reported in NPPES; status is on the state search
Practice location
434 Massachusetts Ave Ste 501, Boston, MA 02118
Phone
(339) 666-8516
Enumerated
Sep 28, 2006
Record last updated
Jun 2, 2025
Fax
(617) 807-0958
Medicare enrollment
Enrolled (PECOS I20250725001882); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 434 Massachusetts Ave Ste 501

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

  1. Raef SenguptaMental Health Counselor1174367221

Verify Russell P. Mackay 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 LMHC10002806
    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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Bills Medicare through one group practice

  1. Thrive Counseling LLCBoston, MA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Russell P. Mackay among 18,415 mental health counselor records in Massachusetts

Russell P. Mackay is one of 18,415 mental health counselor records with a practice address in Massachusetts. 7% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than under 1% of them.

  • NPI issued2006 · under 1% of these records are older, 94% newer
  • In a Medicare fileYes · 7% of these records are
  • In the CMS Doctors and Clinicians fileYes · 10% of these records are
  • Graduated2013 · median 2014 among the 1,811 with a school on file
  • Record last updated2025 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 101YM0800X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

819 mental health counselor records list a practice address in Boston

They are 819 of the 41,865 NPPES records with a practice address in Boston, and 18,415 mental health counselor records in Massachusetts.

The 8 mental health counselor records with the nearest ZIP codes

  1. Leroy AdamsBoston, MA 021181376611459
  2. Danielle Ciraulo, LMHCBoston, MA 021181437287000
  3. Ramsey Coolidge, LMHCBoston, MA 021181982742102
  4. Claudia Cullen, LMHCBoston, MA 021181699807370
  5. Susan Haskell, LICSWBoston, MA 021181770649683
  6. Daphne Hubbard, EDM,LMHCBoston, MA 021181487700175
  7. Keiko Mizuguchi, LMHCBoston, MA 021181891827598
  8. Kim NuttallBoston, MA 021181114095270

Common questions

What is Russell P. Mackay's NPI number?

Russell P. Mackay's National Provider Identifier (NPI) is 1790877090, issued on Sep 28, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Russell P. Mackay located?

The NPPES record lists a practice address at 434 Massachusetts Ave Ste 501, Boston, MA, 02118. Phone: (339) 666-8516. Providers update this record themselves, so call before visiting.

How can I verify Russell P. Mackay's license?

NPPES lists Massachusetts license number LMHC10002806, 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. 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.