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

William Gunther Mallon, CRNA

Certified Registered Nurse Anesthetist in Saint Germain, WI · enumerated 2006.

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

National Provider Identifier

1013090885

Verified

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Registry record

Entity type Individual (Type 1)

Name William Gunther Mallon

Credential CRNA

Sex Male

Practice address Saint Germain, WI, 54558

Phone (715) 542-2728

Enumeration date Oct 23, 2006

Last updated in NPPES Mar 22, 2010

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

Taxonomy & licenses

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License 137583-030 (WI) Secondary

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License 470412917 (MI) Secondary

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License 28182298A (IN) Primary

CRNA · Certified Registered Nurse Anesthetist: An advanced practice nurse specializing in anesthesia care. About the CRNA credential

Other identifiers

Identifier	Type	State	Issuer
000000602388	Other	IN	ANTHEM PROVIDER NUMBER
026511	Other	-	AANA/CRNA
200929030	Medicaid	IN	-

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 William Mallon practice?

The practice location on file with NPPES is in Saint Germain, WI. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for William Mallon?

The National Provider Identifier (NPI) for William Mallon is 1013090885, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-03-22.