Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Mrs. Sarah Martha Altvater, LLMSW

Individual provider Clinical Social Worker · NPI 1417654245

Mrs. Sarah Martha Altvater, LLMSW is a Clinical Social Worker in Byron Center, Michigan. Licensed in Michigan. Registered with an NPI since 2023.

Licensed in
MI
In the registry since
2023

Practice location Address checks out

7791 Byron Center Ave SW
Byron Center, MI 49315-8412
Phone: (616) 499-4711
Fax: (888) 336-9355
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence 6851115899 (MI)

Record details

NPI number1417654245
Entity typeIndividual (Type 1)
GenderFemale
Credentials LLMSW
Sole proprietorNo
NPI enumeratedFebruary 13, 2023
Last updated in NPPESJuly 17, 2025
Certification dateJuly 17, 2025

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