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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Barbara J Koski, RN

Adult Psychiatric/Mental Health Registered Nurse in Muskegon, MI · enumerated 2007.

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

National Provider Identifier

1720209778

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Registry record

Entity type Individual (Type 1)
Name Mrs. Barbara J Koski
Credential RN
Sex Female
Practice address 1470 Peck St, Muskegon, MI, 49441
Phone (231) 724-3300
Fax (231) 724-3348
Enumeration date May 1, 2007
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

163WP0809X Adult Psychiatric/Mental Health Registered Nurse Nursing Service Providers · License 4704176888 (MI) Primary
RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN credential

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

How do I verify Barbara Koski's NPI record?
Cross-check NPI 1720209778 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1720209778 active?
Yes, as of the latest NPPES snapshot, NPI 1720209778 is active (record last updated 2007-07-08).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.