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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mr. Mark Dagnall, LMHC, LADC 1, CRC

Mental Health Counselor in Boston, MA · enumerated 2010.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1083930192

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Registry record

Entity type Individual (Type 1)
Name Mr. Mark Dagnall
Credential LMHC, LADC 1, CRC
Sex Male
Practice address Boston, MA, 02119
Phone (857) 399-1915
Fax (857) 399-1901
Enumeration date Apr 14, 2010
Last updated in NPPES Jul 21, 2015

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 2411 (MA) Secondary
101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License 9039 (MA) Primary

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What is the NPI number for Mark Dagnall?
The National Provider Identifier (NPI) for Mark Dagnall is 1083930192, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mark Dagnall practice?
The practice location on file with NPPES is in Boston, MA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-07-21.