Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Daniel Kleiner, MD

Surgical Oncology Physician in Danbury, CT · enumerated 2007 · practices at Total Renal Care Inc.

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

National Provider Identifier

1033324496

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Registry record

Entity type Individual (Type 1)

Name Dr. Daniel Kleiner

Credential MD

Sex Male

Practice address 111 Osborne St, Danbury, CT, 06810

Phone (203) 739-7131

Fax (203) 739-1554

Enumeration date May 11, 2007

Last updated in NPPES Nov 23, 2020

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 52397 (CT) Secondary

2086X0206X Surgical Oncology Physician Allopathic & Osteopathic Physicians · License 52397 (CT) 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 Daniel Kleiner's NPI record?

Cross-check NPI 1033324496 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1033324496 active?

Yes, as of the latest NPPES snapshot, NPI 1033324496 is active (record last updated 2020-11-23).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-11-23.