Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Medical Ultrasound Diagnostic Alliance Inc.

Cardiovascular Specialist/Technologist in Walnut, CA · enumerated 2007 · authorized official Pak Chiu Wong, President.

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

National Provider Identifier

1114061280

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Registry record

Entity type Organization (Type 2)

Legal business name Medical Ultrasound Diagnostic Alliance Inc.

Practice address 20422 Leap Court, Walnut, CA, 91789

Phone (626) 255-8383

Fax (909) 595-7233

Enumeration date Feb 20, 2007

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

246X00000X Cardiovascular Specialist/Technologist Technologists, Technicians & Other Technical Service Providers · License TG031 (CA) Primary

Authorized official

Name Pak Chiu Wong

Title President

Phone (626) 255-8383

Other identifiers

Identifier	Type	State	Issuer
TG031	Other	CA	IDTF PROVIDER #

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 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.

What type of organization is Medical Ultrasound Diagnostic Alliance Inc.?

Medical Ultrasound Diagnostic Alliance Inc. is registered in NPPES as a Cardiovascular Specialist/Technologist (its primary provider taxonomy).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.