Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Michael H Bass, MD

Gastroenterology Physician in Wilmington, DE · enumerated 2008.

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

National Provider Identifier

1841451580

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Registry record

Entity type Individual (Type 1)

Name Dr. Michael H Bass

Credential MD

Sex Male

Practice address 1941 Limestone Rd Ste 120, Wilmington, DE, 19808

Phone (302) 832-1545

Fax (302) 834-4863

Enumeration date Jun 24, 2008

Last updated in NPPES Jul 29, 2022

Taxonomy & licenses

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License D78215 (MD) Secondary

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License C10012022 (DE) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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.

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Frequently asked questions

How do I verify Michael Bass's NPI record?

Cross-check NPI 1841451580 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1841451580 active?

Yes, as of the latest NPPES snapshot, NPI 1841451580 is active (record last updated 2022-07-29).

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Michael Brooks Specialist · Wilmington, DE NPI 1881695039

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-29.