Jack Greenfield, LMSW
NPI 1124242755 · Clinical Social Worker · Grand Rapids, MI
Jack Greenfield, LMSW is a Clinical Social Worker provider in Grand Rapids, MI (NPI 1124242755).
Provider details
- NPI number
- 1124242755
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LMSW
- Sex
- Male
- Sole proprietor
- Yes
- License
- 6801016263 (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
19 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
- 2007-04-13
- Last updated
- 2007-07-08
Frequently asked questions
- What is Jack Greenfield's NPI number?
- Jack Greenfield's National Provider Identifier (NPI) is 1124242755, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jack Greenfield's specialty?
- Jack Greenfield is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Jack Greenfield located?
- Jack Greenfield's practice location on file with NPPES is 1115 Ball Ave Ne, Grand Rapids, MI 49505-5904.
- What is Jack Greenfield's phone number?
- The practice phone number listed in the NPPES registry for Jack Greenfield is (616) 456-7775.
- Is Jack Greenfield's NPI active?
- Yes — Jack Greenfield's NPI (1124242755) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.