Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Trihealth Os LLC

Orthopaedic Surgery Physician in Hamilton, OH · enumerated 2013 · authorized official Donna Nienaber, Sr Vp Corp Counsel.

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

National Provider Identifier

1851634281

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Registry record

Entity type Organization (Type 2)

Legal business name Trihealth Os LLC

Practice address 50 Riverfront Plz, Hamilton, OH, 45011

Phone (513) 856-9888

Fax (513) 856-9890

Enumeration date Apr 4, 2013

Last updated in NPPES Apr 4, 2013

Taxonomy & classification

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Donna Nienaber

Title Sr Vp Corp Counsel

Phone (513) 569-6062

Other identifiers

Identifier	Type	State	Issuer
0071661	Medicaid	OH	-

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2013-04-04. Verify at npiregistry.cms.hhs.gov.

Where is Trihealth Os LLC located?

The practice location on file with NPPES is in Hamilton, OH.

Providers at this address

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Walter Zancan Orthopaedic Surgery Physician · Hamilton, OH NPI 1740275759 Hamilton Orthopaedic Associates Inc Orthopaedic Surgery Physician · Hamilton, OH NPI 1366437378

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-04.