NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark A Sauer, MD

Pain Medicine (Anesthesiology) Physician in Naples, FL · enumerated 2005.

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

National Provider Identifier

1265423123

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Mark A Sauer
Credential MD
Sex Male
Practice address 1336 Creekside Blvd, Suite 1, Naples, FL, 34108
Phone (239) 261-1158
Fax (239) 261-4232
Enumeration date Oct 31, 2005
Last updated in NPPES Jun 5, 2008

Taxonomy & licenses

207LP2900X Pain Medicine (Anesthesiology) Physician Allopathic & Osteopathic Physicians · License ME 65452 (FL) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
23798 Other - BLUE CROSS/BLUE SHIELD
375453700 Medicaid FL -

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 Mark Sauer practice?
The practice location on file with NPPES is in Naples, FL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mark Sauer?
The National Provider Identifier (NPI) for Mark Sauer is 1265423123, 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 2008-06-05.