Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Jill Sierra-Dinninger, LMSW
Social Worker in Charlotte, MI · enumerated 2018.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1265934228
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Registry record
Entity type Individual (Type 1)
Name Jill Sierra-Dinninger
Credential LMSW
Sex Female
Practice address 551 Courthouse Dr Ste 5, Charlotte, MI, 48813
Phone (517) 543-5100
Enumeration date Mar 6, 2018
Last updated in NPPES Mar 6, 2018
Taxonomy & licenses
104100000X Social Worker Behavioral Health & Social Service Providers · License 6801083822 (MI) 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.
Frequently asked questions
What is the NPI number for Jill Sierra-Dinninger?
The National Provider Identifier (NPI) for Jill Sierra-Dinninger is 1265934228, a Type 1 (individual) record in the CMS NPPES registry.
Where does Jill Sierra-Dinninger practice?
The practice location on file with NPPES is in Charlotte, MI. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-03-06.