Mark Schaten

Mark Schaten is a Internal Medicine Physician provider (Internal Medicine) practicing in Delafield, WI, registered in the NPPES registry with NPI 1356458632 since 2006.

✓ Active NPI ✓ Valid NPI checksum

NPI	1356458632
Entity type	Individual (Type 1)
Name	Mark Schaten
Sex	Male
Practice address	S4W31227 HIDDEN HOLW, Delafield, WI, 53018
Phone	9209489301
Enumeration date	2006-08-24
Last updated in NPPES	2021-05-24

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
207R00000X	Internal Medicine Physician	Primary	43023	WI

Copy-ready billing details

Provider: Mark Schaten
NPI: 1356458632
Taxonomy: 207R00000X (Internal Medicine Physician)
Address: S4W31227 HIDDEN HOLW, Delafield, WI, 53018

Verify this record

Cross-check NPI 1356458632 against the authoritative CMS record: view Mark Schaten on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

What specialty is Mark Schaten?

Mark Schaten is registered in NPPES with the primary taxonomy of Internal Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2021-05-24.