Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Melissa Ann Tieck-O'Connor, PTA

Physical Therapy Assistant in Sioux City, IA · enumerated 2009 · practices at Sioux City Physical Therapy PC.

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

National Provider Identifier

1790917334

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Registry record

Entity type Individual (Type 1)

Name Melissa Ann Tieck-O'Connor

Credential PTA

Sex Female

Practice address 2802 Castles Gate Dr, Sioux City, IA, 51106

Phone (712) 266-0707

Enumeration date Aug 16, 2009

Last updated in NPPES Aug 16, 2009

Taxonomy & licenses

225200000X Physical Therapy Assistant Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 636 (NE) Primary

225200000X Physical Therapy Assistant Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 00649 (IA) Secondary

225200000X Physical Therapy Assistant Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 0134 (SD) 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

How do I verify Melissa Tieck-O'Connor's NPI record?

Cross-check NPI 1790917334 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1790917334 active?

Yes, as of the latest NPPES snapshot, NPI 1790917334 is active (record last updated 2009-08-16).

Other providers at this practice address

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Stephen Venne Physical Therapist · Sioux City, IA NPI 1831278571 Sioux City Physical Therapy PC Physical Therapist · Sioux City, IA NPI 1346313996 Summer Johnson Physical Therapist · Sioux City, IA NPI 1164686762 Jessica Mchugh Occupational Therapist · Sioux City, IA NPI 1114166584 John Anzalone Physical Therapist · Sioux City, IA NPI 1437407061 Zachary Schoenrock Physical Therapist · Sioux City, IA NPI 1881242832 Evelina Krie Physical Therapist · Sioux City, IA NPI 1033045901

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-08-16.