NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. David John Westrich Jr., MD

Gastroenterology Physician in Saint Charles, MO · enumerated 2016.

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

National Provider Identifier

1679927230

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. David John Westrich Jr.
Credential MD
Sex Male
Practice address 400 1st Capitol Dr Ste 201, Saint Charles, MO, 63301
Phone (636) 669-2332
Enumeration date Apr 20, 2016
Last updated in NPPES Jul 25, 2025

Taxonomy & licenses

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 35145213 (OH) Secondary
207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 2025021152 (MO) 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
0493806 Medicaid OH -

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

What specialty is David Westrich?
David Westrich is registered in NPPES with the primary taxonomy of Gastroenterology 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.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-25.