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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Stephen Lynn Peterson II

Registered Respiratory Therapist in Mesa, AZ · enumerated 2019 · practices at Arizona Breathe Right LLC.

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

National Provider Identifier

1821562885

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Registry record

Entity type Individual (Type 1)
Name Stephen Lynn Peterson II
Sex Male
Practice address Mesa, AZ, 85209
Phone (480) 326-8100
Enumeration date Jan 13, 2019
Last updated in NPPES Sep 20, 2019

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

332B00000X Durable Medical Equipment & Medical Supplies Suppliers · License 1945208 (AZ) Secondary
227900000X Registered Respiratory Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 005988 (AZ) Primary

Other identifiers

Identifier Type State Issuer
480036 Other AZ AHCCCS

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 Stephen Peterson practice?
The practice location on file with NPPES is in Mesa, AZ. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Stephen Peterson?
The National Provider Identifier (NPI) for Stephen Peterson is 1821562885, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-09-20.