Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Katheryn M Johnston, FNP-C

Family Nurse Practitioner in Show Low, AZ · enumerated 2019.

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

National Provider Identifier

1083262620

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Registry record

Entity type Individual (Type 1)

Name Katheryn M Johnston

Credential FNP-C

Sex Female

Practice address 4951 S White Mountain Rd Bldg A, Show Low, AZ, 85901

Phone (928) 537-6700

Fax (928) 532-2199

Enumeration date Aug 27, 2019

Last updated in NPPES Apr 12, 2024

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 225636 (AZ) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 225636 (AZ) Primary

Other identifiers

Identifier	Type	State	Issuer
008465	Medicaid	AZ	-

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 Katheryn Johnston?

Katheryn Johnston is registered in NPPES with the primary taxonomy of Family Nurse Practitioner. 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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Craig Brady Family Medicine Physician · Show Low, AZ NPI 1447224548 Michael Boyle Surgery Physician · Show Low, AZ NPI 1245294552 Jeffrey Levison Internal Medicine Physician · Show Low, AZ NPI 1467405894 John Mansfield Urology Physician · Show Low, AZ NPI 1588688402 Dax Trujillo Pain Medicine Physician · Show Low, AZ NPI 1699848382 Jared Hall Foot & Ankle Surgery Podiatrist · Show Low, AZ NPI 1225225261 Curtis Birdno Medical Physician Assistant · Show Low, AZ NPI 1063740884 Lu Ann Penchuk Family Nurse Practitioner · Show Low, AZ NPI 1548577695

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-12.