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

Barney Nathan Sadler, M.D.

Internal Medicine Physician in Myrtle Beach, SC · enumerated 2017.

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

National Provider Identifier

1689106445

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Registry record

Entity type Individual (Type 1)

Name Barney Nathan Sadler

Credential M.D.

Sex Male

Practice address Myrtle Beach, SC, 29572

Phone (843) 236-1950

Enumeration date Mar 31, 2017

Last updated in NPPES Dec 7, 2023

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

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 41027 (SC) Primary

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

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.

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Frequently asked questions

Is NPI 1689106445 active?

Yes, as of the latest NPPES snapshot, NPI 1689106445 is active (record last updated 2023-12-07).

How do I verify Barney Sadler's NPI record?

Cross-check NPI 1689106445 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-12-07.