Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Alfonso A Blum, M.

Internal Medicine Physician in East Chicago, IN · enumerated 2007.

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

National Provider Identifier

1790810448

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Registry record

Entity type Individual (Type 1)

Name Dr. Alfonso A Blum

Credential M.

Sex Male

Practice address 4035 Elm Street, East Chicago, IN, 46312

Phone (219) 398-9840

Fax (219) 398-9845

Enumeration date Feb 22, 2007

Last updated in NPPES Jul 13, 2010

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 01062815A (IN) Primary

Other identifiers

Identifier	Type	State	Issuer
01062815A	Other	IN	PHYSICIAN LICENSE

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 do I verify Alfonso Blum's NPI record?

Cross-check NPI 1790810448 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1790810448 active?

Yes, as of the latest NPPES snapshot, NPI 1790810448 is active (record last updated 2010-07-13).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-07-13.