Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

James P. Mazzulla, M.D.

Internal Medicine Physician in Milwaukee, WI · enumerated 2005.

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

National Provider Identifier

1437144946

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name James P. Mazzulla

Credential M.D.

Sex Male

Practice address 2500 W Layton Ave, Suite 250, Milwaukee, WI, 53221

Phone (414) 282-2006

Fax (414) 281-8704

Enumeration date Sep 12, 2005

Last updated in NPPES Nov 20, 2008

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 20804 (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
30321000	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

How do I verify James Mazzulla's NPI record?

Cross-check NPI 1437144946 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1437144946 active?

Yes, as of the latest NPPES snapshot, NPI 1437144946 is active (record last updated 2008-11-20).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-11-20.