Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Joseph V Klag, DO

Interventional Cardiology Physician in Phoenix, AZ · enumerated 2005.

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

National Provider Identifier

1730185430

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Registry record

Entity type Individual (Type 1)

Name Joseph V Klag

Credential DO

Sex Male

Practice address 3805 E Bell Rd, Suite 3100, Phoenix, AZ, 85032

Phone (602) 867-8644

Fax (602) 795-5698

Enumeration date Jun 27, 2005

Last updated in NPPES Oct 24, 2014

Taxonomy & licenses

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 3185 (AZ) Secondary

207RI0011X Interventional Cardiology Physician Allopathic & Osteopathic Physicians · License 3185 (AZ) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
1Z3959	Other	AZ	HEALTHNET
25-00208	Other	AZ	UNITED HEALTHCARE
060042204	Other	AZ	RAILROAD MEDICARE
391045	Medicaid	AZ	-
AZ0814020	Other	AZ	BLUE CROSS BLUE SHIELD

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

How do I verify Joseph Klag's NPI record?

Cross-check NPI 1730185430 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1730185430 active?

Yes, as of the latest NPPES snapshot, NPI 1730185430 is active (record last updated 2014-10-24).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-10-24.