Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Daniel H Litoff, M.D.

Internal Medicine Physician in Chicago, IL · enumerated 2005.

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

National Provider Identifier

1891786372

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Registry record

Entity type Individual (Type 1)

Name Dr. Daniel H Litoff

Credential M.D.

Sex Male

Practice address 1460 N Halsted St, Suite 401, Chicago, IL, 60642

Phone (773) 880-0320

Fax (312) 204-5501

Enumeration date Nov 2, 2005

Last updated in NPPES Mar 6, 2025

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 036070191 (IL) 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
036070191	Medicaid	IL	-

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 is the NPI number for Daniel Litoff?

The National Provider Identifier (NPI) for Daniel Litoff is 1891786372, a Type 1 (individual) record in the CMS NPPES registry.

Where does Daniel Litoff practice?

The practice location on file with NPPES is in Chicago, IL. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-03-06.