Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Audrey Eileen Fields Grube, O.D.
Optometrist in Mandan, ND · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1669512471
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Registry record
Entity type Individual (Type 1)
Name Dr. Audrey Eileen Fields Grube
Credential O.D.
Sex Female
Practice address 107 3rd Ave Nw, Mandan, ND, 58554
Phone (701) 751-2131
Enumeration date Feb 8, 2007
Last updated in NPPES Jul 9, 2010
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD 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.
Frequently asked questions
Where does Audrey Fields Grube practice?
The practice location on file with NPPES is in Mandan, ND. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Audrey Fields Grube?
The National Provider Identifier (NPI) for Audrey Fields Grube is 1669512471, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-07-09.