Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Greatcall, Inc.

Q: What type of organization is Greatcall, Inc.?

Greatcall, Inc. is registered in NPPES as a Emergency Response System Companies (its primary provider taxonomy).

Emergency Response System Companies in San Diego, CA · enumerated 2016 · authorized official Jeffrey Polizzotto, Vp Connected Health.

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

National Provider Identifier

1811448301

Verified

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Registry record

Entity type Organization (Type 2)

Legal business name Greatcall, Inc.

Practice address 10935 Vista Sorrento Pkwy, San Diego, CA, 92130

Phone (858) 720-7555

Enumeration date Oct 19, 2016

Last updated in NPPES Oct 19, 2016

Taxonomy & classification

333300000X Emergency Response System Companies Suppliers Primary

Authorized official

Name Jeffrey Polizzotto

Title Vp Connected Health

Phone (858) 720-7555

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 type of organization is Greatcall, Inc.?

Greatcall, Inc. is registered in NPPES as a Emergency Response System Companies (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-10-19.