Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. C Graf Cornish, DDS

Q: What is the NPI number for C Cornish?

The National Provider Identifier (NPI) for C Cornish is 1841204039, a Type 1 (individual) record in the CMS NPPES registry.

General Practice Dentistry in Castle Rock, CO · enumerated 2006.

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

National Provider Identifier

1841204039

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Registry record

Entity type Individual (Type 1)

Name Dr. C Graf Cornish

Credential DDS

Sex Male

Practice address 1189 S Perry St, Suite 250, Castle Rock, CO, 80104

Phone (303) 688-3398

Fax (303) 688-3846

Enumeration date Jul 27, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 2928 (CO) Primary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

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 → Validate an NPI →

Frequently asked questions

Where does C Cornish practice?

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

What is the NPI number for C Cornish?

The National Provider Identifier (NPI) for C Cornish is 1841204039, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.