Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Jay H. Kleiman, M.D.

Cardiovascular Disease Physician in Lake Forest, IL · enumerated 2007.

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

National Provider Identifier

1275722373

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Registry record

Entity type Individual (Type 1)

Name Dr. Jay H. Kleiman

Credential M.D.

Sex Male

Practice address Lake Forest, IL, 60045

Phone (847) 295-7380

Fax (847) 295-7518

Enumeration date Oct 15, 2007

Last updated in NPPES Oct 15, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1275722373 active?

Yes, as of the latest NPPES snapshot, NPI 1275722373 is active (record last updated 2007-10-15).

How do I verify Jay Kleiman's NPI record?

Cross-check NPI 1275722373 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-15.