Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Diamond House Calls

Q: What is the NPI number for Diamond House Calls?

The NPI for Diamond House Calls is 1457824195, a Type 2 (organization) record in the CMS NPPES registry.

Primary Care Nurse Practitioner in Allen, TX · enumerated 2019 · authorized official Alison Harris, Owner/Nurse Practitioner.

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

National Provider Identifier

1457824195

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Registry record

Entity type Organization (Type 2)

Legal business name Diamond House Calls

Practice address 719 Deep Well Dr, Allen, TX, 75002

Phone (404) 993-2739

Enumeration date Jan 4, 2019

Last updated in NPPES Mar 18, 2019

Taxonomy & classification

363LP2300X Primary Care Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers Primary

Authorized official

Name Alison Harris

Title Owner/Nurse Practitioner

Phone (469) 642-3100

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

Who is the authorized official for Diamond House Calls?

NPPES lists Alison Harris (Owner/Nurse Practitioner) as the authorized official for this organization.

What is the NPI number for Diamond House Calls?

The NPI for Diamond House Calls is 1457824195, a Type 2 (organization) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-03-18.