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

Mr. Mark A Ferriman, M.A.

Mental Health Counselor in Johnson, VT · enumerated 2016.

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

National Provider Identifier

1720435837

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Registry record

Entity type Individual (Type 1)

Name Mr. Mark A Ferriman

Credential M.A.

Sex Male

Practice address Johnson, VT, 05656

Phone (802) 777-4692

Enumeration date May 18, 2016

Last updated in NPPES Mar 11, 2026

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

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License 068.0116764 (VT) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Mark Ferriman practice?

The practice location on file with NPPES is in Johnson, VT. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Mark Ferriman?

The National Provider Identifier (NPI) for Mark Ferriman is 1720435837, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-11.