IndividualActive
William Larzelere
NPI 1881349504 · Social Worker · Grand Rapids, MI
William Larzelere is a Social Worker provider in Grand Rapids, MI (NPI 1881349504).
Provider details
- NPI number
- 1881349504
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(54/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
83% 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
1115 Ball Ave Ne
Grand Rapids, MI 49505-5904
Phone: (616) 456-6571
Fax: (616) 235-0979
Street-level locationGet directions
Mailing address
1337 Logan St Se
Grand Rapids, MI 49506-2553
Registry dates
- Enumerated
- 2022-02-22
- Last updated
- 2022-02-22
- Certified
- 2022-02-22
Frequently asked questions
- What is William Larzelere's NPI number?
- William Larzelere's National Provider Identifier (NPI) is 1881349504, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Larzelere's specialty?
- William Larzelere is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is William Larzelere located?
- William Larzelere's practice location on file with NPPES is 1115 Ball Ave Ne, Grand Rapids, MI 49505-5904.
- What is William Larzelere's phone number?
- The practice phone number listed in the NPPES registry for William Larzelere is (616) 456-6571.
- Is William Larzelere's NPI active?
- Yes — William Larzelere's NPI (1881349504) is active in the NPPES registry as of the last update on 2022-02-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.