Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Mission Hills Medical Group, Inc.

Internal Medicine Physician in Mission Viejo, CA · enumerated 2006 · authorized official Mon-Ta Tsai, President.

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

National Provider Identifier

1225093305

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)

Legal business name Mission Hills Medical Group, Inc.

Practice address 25982 Pala, Suite 250, Mission Viejo, CA, 92691

Phone (949) 588-0051

Fax (949) 588-0052

Enumeration date Apr 20, 2006

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Mon-Ta Tsai

Title President

Phone (949) 588-0051

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2020-08-22. Verify at npiregistry.cms.hhs.gov.

Where is Mission Hills Medical Group, Inc. located?

The practice location on file with NPPES is in Mission Viejo, CA.

Providers at this address

Browse all →

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