Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. David Mark Essmaker, LLBSW

Social Worker in Houghton Lake, MI · enumerated 2013.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1336489731

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Registry record

Entity type Individual (Type 1)

Name Mr. David Mark Essmaker

Credential LLBSW

Sex Male

Practice address 2715 S Townline Rd, Houghton Lake, MI, 48629

Phone (989) 366-2957

Fax (989) 366-9420

Enumeration date Feb 21, 2013

Last updated in NPPES Feb 21, 2013

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 6802087353 (MI) Primary

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.

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Frequently asked questions

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.

What specialty is David Essmaker?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-02-21.