Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Calvin Robert Klein, MD

Q: What is the NPI number for Calvin Klein?

The National Provider Identifier (NPI) for Calvin Klein is 1033236765, a Type 1 (individual) record in the CMS NPPES registry.

Hematology & Oncology Physician in Santa Monica, CA · enumerated 2007.

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

National Provider Identifier

1033236765

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Calvin Robert Klein

Credential MD

Sex Male

Practice address 2336 Santa Monica Blvd, Suite 301, Santa Monica, CA, 90404

Phone (310) 829-5471

Fax (310) 829-6192

Enumeration date Mar 26, 2007

Last updated in NPPES Feb 9, 2010

Taxonomy & licenses

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License G19180 (CA) 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
00G19180B	Medicaid	CA	-

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

Where does Calvin Klein practice?

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

What is the NPI number for Calvin Klein?

The National Provider Identifier (NPI) for Calvin Klein is 1033236765, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-02-09.