NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Arrhythmia Specialists Inc

Cardiovascular Disease Physician in Concord, CA · enumerated 2006 · authorized official Carleton Nibley, Physician.

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

National Provider Identifier

1033275524

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Arrhythmia Specialists Inc
Practice address 2700 Grant St, 319, Concord, CA, 94520
Enumeration date Dec 29, 2006
Last updated in NPPES Aug 3, 2011

Taxonomy & classification

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Carleton Nibley
Title Physician

Other identifiers

Identifier Type State Issuer
DB0077 Other CA GROUP MEDICARE RAILROAD N
GR0098120 Medicaid CA -
ZZZ079912 Other CA BLUE SHIELD

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

Where is Arrhythmia Specialists Inc located?
The practice location on file with NPPES is in Concord, CA.
How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2011-08-03. Verify at npiregistry.cms.hhs.gov.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-08-03.