Mr. Benjamin Frank Cornelsen, LCSW

Mr. Benjamin Frank Cornelsen is a Clinical Social Worker provider (Social Worker) practicing in Soledad, CA, registered in the NPPES registry with NPI 1669776639 since 2011. The credential LCSW stands for Licensed Clinical Social Worker. Practices at Corrections and Rehabilitation-Headquarters (listed at the same practice address in NPPES).

✓ Active NPI ✓ Valid NPI checksum

NPI	1669776639
Entity type	Individual (Type 1)
Name	Mr. Benjamin Frank Cornelsen
Credential	LCSW
Sex	Male
Practice address	31625 HIGHWAY 101, Soledad, CA, 93960
Phone	8316785500
Enumeration date	2011-01-05
Last updated in NPPES	2023-06-13

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
1041C0700X	Clinical Social Worker	Secondary	26900	CA
1041C0700X	Clinical Social Worker	Primary	61515	CA

LCSW — Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

Copy-ready billing details

Provider: Benjamin Cornelsen, LCSW
NPI: 1669776639
Taxonomy: 1041C0700X (Clinical Social Worker)
Address: 31625 HIGHWAY 101, Soledad, CA, 93960

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1568644961	David Scanlon	Individual	Dentist	Soledad, CA
1124653951	Corrections and Rehabilitation-Headquarters	Organization	Pharmacy	Soledad, CA

Verify this record

Cross-check NPI 1669776639 against the authoritative CMS record: view Mr. Benjamin Frank Cornelsen 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

Where does Benjamin Cornelsen practice?

The practice location on file with NPPES is in Soledad, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Benjamin Cornelsen?

The National Provider Identifier (NPI) for Benjamin Cornelsen is 1669776639, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2023-06-13.