John Campbell Erwin, LLMSW

John Campbell Erwin is a Clinical Social Worker provider (Social Worker) practicing in Big Rapids, MI, registered in the NPPES registry with NPI 1245835644 since 2020.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI	1245835644
Entity type	Individual (Type 1)
Name	John Campbell Erwin
Credential	LLMSW
Sex	Male
Practice address	Big Rapids, MI, 49307
Phone	2317965825
Enumeration date	2020-12-02
Last updated in NPPES	2020-12-02

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
1041C0700X	Clinical Social Worker	Primary	6801108258	MI

Copy-ready billing details

Provider: John Erwin, LLMSW
NPI: 1245835644
Taxonomy: 1041C0700X (Clinical Social Worker)
Address: Big Rapids, MI, 49307

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1407945736	Anne Gillespie	Individual	Counselor	Big Rapids, MI
1346330545	Brenda Marvin	Individual	Social Worker	Big Rapids, MI
1295816239	Angela Thomas	Individual	Clinical Social Worker	Big Rapids, MI
1154404838	Janet Vizina-Roubal	Individual	Clinical Social Worker	Big Rapids, MI
1073697835	Catherine Beagle	Individual	Clinical Social Worker	Big Rapids, MI
1336209444	Eileen Heuvelhorst	Individual	Clinical Psychologist	Big Rapids, MI
1649421959	Lisa Martinson	Individual	Clinical Social Worker	Big Rapids, MI
1548403884	Marie Chapman	Individual	Social Worker	Big Rapids, MI

Verify this record

Cross-check NPI 1245835644 against the authoritative CMS record: view John Campbell Erwin on the official NPPES registry .

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.

Frequently asked questions

What specialty is John Erwin?

John Erwin is registered in NPPES with the primary taxonomy of Clinical Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2020-12-02.