Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Andrew Ertl, MD

Orthopaedic Surgery Physician in Prairie Du Sac, WI · enumerated 2010.

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

National Provider Identifier

1679894943

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Registry record

Entity type Individual (Type 1)

Name Dr. Andrew Ertl

Credential MD

Sex Male

Practice address 260 26th St, Prairie Du Sac, WI, 53578

Phone (608) 643-2471

Fax (608) 643-4788

Enumeration date Jun 21, 2010

Last updated in NPPES Jul 21, 2022

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 66056 (WI) 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
000495	Other	-	PTAN
100058595	Medicaid	WI	-

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

Is NPI 1679894943 active?

Yes, as of the latest NPPES snapshot, NPI 1679894943 is active (record last updated 2022-07-21).

How do I verify Andrew Ertl's NPI record?

Cross-check NPI 1679894943 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 2022-07-21.