Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Northwest Internal Medicine Specialists

Nephrology Physician in Bridgeton, MO · enumerated 2006 · authorized official Paul Altsheler, Owner.

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

National Provider Identifier

1861464851

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Registry record

Entity type Organization (Type 2)

Legal business name Northwest Internal Medicine Specialists

Practice address 3460 Mckelvey Rd, Bridgeton, MO, 63044

Phone (314) 739-3990

Fax (314) 739-3924

Enumeration date Feb 3, 2006

Last updated in NPPES Oct 25, 2007

Taxonomy & classification

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License R7222 (MO) Primary

Authorized official

Name Paul Altsheler

Title Owner

Phone (314) 739-3990

Other identifiers

Identifier	Type	State	Issuer
DB5898	Other	MO	RR MEDICARE GROUP#

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 current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2007-10-25. Verify at npiregistry.cms.hhs.gov.

Where is Northwest Internal Medicine Specialists located?

The practice location on file with NPPES is in Bridgeton, MO.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-25.