Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Paul Willon Loewenstein, MD

Plastic Surgery Physician in Brookfield, WI · enumerated 2005 · practices at Greater Milwaukee Plastic Surgeons Sc.

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

National Provider Identifier

1558365981

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Registry record

Entity type Individual (Type 1)

Name Paul Willon Loewenstein

Credential MD

Sex Male

Practice address 13800 W North Avenue, Suite 110, Brookfield, WI, 53005

Phone (262) 717-4000

Fax (262) 641-7435

Enumeration date Jun 13, 2005

Last updated in NPPES Feb 14, 2012

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 24569 (WI) Secondary

208200000X Plastic Surgery Physician Allopathic & Osteopathic Physicians · License 24569 (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
30475200	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

Where does Paul Loewenstein practice?

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

What is the NPI number for Paul Loewenstein?

The National Provider Identifier (NPI) for Paul Loewenstein is 1558365981, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Philip Sonderman Plastic Surgery Physician · Brookfield, WI NPI 1992709323 Thomas Kinney Plastic Surgery Physician · Brookfield, WI NPI 1447254875 Greater Milwaukee Plastic Surgeons Sc Specialist · Brookfield, WI NPI 1154389484

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-02-14.