Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Marcus Greatens, MD

Orthopaedic Surgery Physician in Eau Claire, WI · enumerated 2014.

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

National Provider Identifier

1538570411

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Registry record

Entity type Individual (Type 1)

Name Marcus Greatens

Credential MD

Sex Male

Practice address 1400 Bellinger St, Eau Claire, WI, 54703

Phone (715) 838-5222

Enumeration date May 14, 2014

Last updated in NPPES Mar 22, 2021

Taxonomy & licenses

207XS0114X Adult Reconstructive Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 62396 (CO) Secondary

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 73594 (WI) Primary

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 67604 (MN) Secondary

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 4301105130 (MI) Secondary

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

Where does Marcus Greatens practice?

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

What is the NPI number for Marcus Greatens?

The National Provider Identifier (NPI) for Marcus Greatens is 1538570411, 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 2021-03-22.