Sarah Altvater, LLMSW
NPI 1417654245 · Clinical Social Worker · Byron Center, MI
Sarah Altvater, LLMSW is a Clinical Social Worker provider in Byron Center, MI (NPI 1417654245).
Provider details
- NPI number
- 1417654245
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LLMSW
- Sex
- Female
- Sole proprietor
- No
- License
- 6851115899 (MI)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2023-02-13
- Last updated
- 2025-07-17
- Certified
- 2025-07-17
Frequently asked questions
- What is Sarah Altvater's NPI number?
- Sarah Altvater's National Provider Identifier (NPI) is 1417654245, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sarah Altvater's specialty?
- Sarah Altvater is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Sarah Altvater located?
- Sarah Altvater's practice location on file with NPPES is 7791 Byron Center Ave Sw, Byron Center, MI 49315-8412.
- What is Sarah Altvater's phone number?
- The practice phone number listed in the NPPES registry for Sarah Altvater is (616) 499-4711.
- Is Sarah Altvater's NPI active?
- Yes — Sarah Altvater's NPI (1417654245) is active in the NPPES registry as of the last update on 2025-07-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.