NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Mark W. Ernest, M.D.

General Practice Physician in Pensacola Beach, FL · enumerated 2013.

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

National Provider Identifier

1821331273

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Registry record

Entity type Individual (Type 1)
Name Dr. Mark W. Ernest
Credential M.D.
Sex Male
Practice address Pensacola Beach, FL, 32561
Phone (448) 216-6727
Enumeration date Apr 4, 2013
Last updated in NPPES Nov 15, 2023

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

208D00000X General Practice Physician Allopathic & Osteopathic Physicians · License MD.36816 (AL) Secondary
208D00000X General Practice Physician Allopathic & Osteopathic Physicians · License 50575 (MT) Secondary
208D00000X General Practice Physician Allopathic & Osteopathic Physicians · License 53134 (TN) Secondary
208D00000X General Practice Physician Allopathic & Osteopathic Physicians · License ME164216 (FL) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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 Mark Ernest practice?
The practice location on file with NPPES is in Pensacola Beach, FL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mark Ernest?
The National Provider Identifier (NPI) for Mark Ernest is 1821331273, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-15.