Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Timothy Mess, PA-C

Physician Assistant in Altoona, WI · enumerated 2013 · practices at Chippewa Valley Orthopedics and Sports Medicine Clinic Sc.

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

National Provider Identifier

1922446020

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Registry record

Entity type Individual (Type 1)

Name Timothy Mess

Credential PA-C

Sex Male

Practice address 1200 Oakleaf Way Ste A, Altoona, WI, 54720

Phone (715) 832-1400

Fax (715) 832-4187

Enumeration date Jun 11, 2013

Last updated in NPPES Jun 4, 2026

Taxonomy & licenses

363AS0400X Surgical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 313223 (WI) Secondary

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 3132-23 (WI) Primary

363AM0700X Medical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 313223 (WI) Secondary

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

What specialty is Timothy Mess?

Timothy Mess is registered in NPPES with the primary taxonomy of Physician Assistant. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

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Chippewa Valley Orthopedics and Sports Medicine Clinic Sc Orthopaedic Surgery Physician · Altoona, WI NPI 1699778829 Eric Caporusso Podiatrist · Altoona, WI NPI 1366445587 Mark Mccarthy Orthopaedic Surgery Physician · Altoona, WI NPI 1427020627 Benjamin Anderson Family Nurse Practitioner · Altoona, WI NPI 1437111739 Troy Berg Orthopaedic Surgery Physician · Altoona, WI NPI 1740216845 Nathaniel Stewart Orthopaedic Surgery Physician · Altoona, WI NPI 1225064017 Kamal Thapar Neurological Surgery Physician · Altoona, WI NPI 1174610174 Anita Coenen Athletic Trainer · Altoona, WI NPI 1447302500

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-04.