Jeffrey Marsh, LMSW
NPI 1598114936 · Clinical Social Worker · Grand Rapids, MI
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jeffrey Marsh, LMSW is a Clinical Social Worker provider in Grand Rapids, MI (NPI 1598114936).
Provider details
- NPI number
- 1598114936
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LMSW
- Sex
- Male
- Sole proprietor
- Yes
- License
- 6801073262 (MI)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Hospitals
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 300 68th St SeGrand Rapids, MI 49548-6927Phone: (616) 559-5811Fax: (616) 559-5856
Registry dates
- Enumerated
- 2016-06-07
- Last updated
- 2026-04-17
- Certified
- 2026-04-17
Frequently asked questions
- What is Jeffrey Marsh's NPI number?
- Jeffrey Marsh's National Provider Identifier (NPI) is 1598114936, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jeffrey Marsh's specialty?
- Jeffrey Marsh is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Jeffrey Marsh located?
- Jeffrey Marsh's practice location on file with NPPES is 790 Fuller Ave Ne, Grand Rapids, MI 49503-1918.
- What is Jeffrey Marsh's phone number?
- The practice phone number listed in the NPPES registry for Jeffrey Marsh is (616) 336-3909.
- Does Jeffrey Marsh accept Medicare?
- Jeffrey Marsh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jeffrey Marsh's NPI active?
- Yes — Jeffrey Marsh's NPI (1598114936) is active in the NPPES registry as of the last update on 2026-04-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.