NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Marcus Fenn, DDS

General Practice Dentistry in Sierra Vista, AZ · enumerated 2020 · practices at James B. Leavitt D.M.D., P.C..

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

National Provider Identifier

1245858513

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Marcus Fenn
Credential DDS
Sex Male
Practice address 701 E Wilcox Dr, Sierra Vista, AZ, 85635
Enumeration date Jul 13, 2020
Last updated in NPPES Jul 13, 2020

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License D010748 (AZ) 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 Marcus Fenn practice?
The practice location on file with NPPES is in Sierra Vista, AZ. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Marcus Fenn?
The National Provider Identifier (NPI) for Marcus Fenn is 1245858513, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-07-13.