Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. Zachary Adam O'Steen, M. ED.
Counselor in Lowell, MA · enumerated 2009.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1992938955
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Registry record
Entity type Individual (Type 1)
Name Mr. Zachary Adam O'Steen
Credential M. ED.
Sex Male
Practice address 77 E Merrimack St Ste 1, Lowell, MA, 01852
Phone (978) 453-6800
Enumeration date Aug 25, 2009
Last updated in NPPES Aug 25, 2009
Taxonomy & licenses
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.
Frequently asked questions
Is NPI 1992938955 active?
Yes, as of the latest NPPES snapshot, NPI 1992938955 is active (record last updated 2009-08-25).
How do I verify Zachary O'Steen's NPI record?
Cross-check NPI 1992938955 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-08-25.