Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michael Carl Weiss, M.D.

Internal Medicine Physician in Valparaiso, IN · enumerated 2006.

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

National Provider Identifier

1417066374

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Registry record

Entity type Individual (Type 1)

Name Michael Carl Weiss

Credential M.D.

Sex Male

Practice address 2401 Valley Dr, Valparaiso, IN, 46383

Phone (219) 462-5195

Fax (219) 462-5195

Enumeration date Aug 30, 2006

Last updated in NPPES Nov 29, 2012

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 01030965A (IN) 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
100208260A	Medicaid	IN	-
CA0402	Other	IN	RAILROAD MEDICARE
000000090508	Other	IN	ANTHEM BLUE CROSS BLUE SH

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

What specialty is Michael Weiss?

Michael Weiss 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-11-29.