Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Jeffrey M Klein, MD

Internal Medicine Physician in Troy, MI · enumerated 2005.

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

National Provider Identifier

1205811627

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Registry record

Entity type Individual (Type 1)

Name Dr. Jeffrey M Klein

Credential MD

Sex Male

Practice address 3290 W Big Beaver Rd, Ste 420, Troy, MI, 48084

Phone (248) 649-9700

Fax (248) 649-9745

Enumeration date Dec 8, 2005

Last updated in NPPES Mar 12, 2021

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 4301048919 (MI) 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

Where does Jeffrey Klein practice?

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

What is the NPI number for Jeffrey Klein?

The National Provider Identifier (NPI) for Jeffrey Klein is 1205811627, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-03-12.