Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mark Alan Olsen
Registered Nurse in Centreville, MI · enumerated 2020.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1154930618
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Registry record
Entity type Individual (Type 1)
Name Mark Alan Olsen
Sex Male
Practice address 677 E Main St, Centreville, MI, 49032
Phone (269) 467-1000
Enumeration date Jul 30, 2020
Last updated in NPPES Sep 2, 2020
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
What is the NPI number for Mark Olsen?
The National Provider Identifier (NPI) for Mark Olsen is 1154930618, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mark Olsen practice?
The practice location on file with NPPES is in Centreville, MI. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Kristine Kirsch Registered Nurse · Centreville, MI NPI 1649266784 Lindsay Knapp Clinical Social Worker · Centreville, MI NPI 1750651535 Jarrett Cupp Professional Counselor · Centreville, MI NPI 1598039901 Kristen Browning Professional Counselor · Centreville, MI NPI 1568728483 Melissa Taylor Counseling Psychologist · Centreville, MI NPI 1225381080 Nathan Anderson Mental Health Counselor · Centreville, MI NPI 1982948907 Jeannette Bayyapuneedi Professional Counselor · Centreville, MI NPI 1104162783 Jessica Quintana Mental Health Counselor · Centreville, MI NPI 1063852820
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-09-02.