Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark Linzer, MD

Q: What is the NPI number for Mark Linzer?

The National Provider Identifier (NPI) for Mark Linzer is 1245206267, a Type 1 (individual) record in the CMS NPPES registry.

Internal Medicine Physician in Minneapolis, MN · enumerated 2006 · practices at Hennepin Healthcare System Inc.

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

National Provider Identifier

1245206267

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Registry record

Entity type Individual (Type 1)

Name Mark Linzer

Credential MD

Sex Male

Practice address 715 S 8th St, Minneapolis, MN, 55404

Phone (612) 873-6963

Fax (612) 873-1928

Enumeration date Feb 28, 2006

Last updated in NPPES Oct 18, 2024

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 52486 (MN) 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 Mark Linzer practice?

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

What is the NPI number for Mark Linzer?

The National Provider Identifier (NPI) for Mark Linzer is 1245206267, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-10-18.