Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Nathaniel A Ptak

Foot & Ankle Surgery Podiatrist in Sierra Vista, AZ · enumerated 2019 · practices at Sierra Vista Regional Health Center Medical Group LLC.

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

National Provider Identifier

1194387571

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Registry record

Entity type Individual (Type 1)

Name Nathaniel A Ptak

Sex Male

Practice address 5750 E Highway 90 Ste 200, Sierra Vista, AZ, 85635

Phone (520) 263-3761

Fax (520) 263-3779

Enumeration date Jul 5, 2019

Last updated in NPPES Jun 26, 2025

Taxonomy & licenses

207XX0004X Orthopaedic Foot and Ankle Surgery Physician Allopathic & Osteopathic Physicians · License 12366058-0501 (UT) Secondary

213ES0103X Foot & Ankle Surgery Podiatrist Podiatric Medicine & Surgery Service Providers · License POD001108 (AZ) Primary

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

Is NPI 1194387571 active?

Yes, as of the latest NPPES snapshot, NPI 1194387571 is active (record last updated 2025-06-26).

How do I verify Nathaniel Ptak's NPI record?

Cross-check NPI 1194387571 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-06-26.