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Ruby Jane Sia MD Inc

Internal Medicine Physician in Apple Valley, CA · enumerated 2006 · authorized official Ruby Sia, President.

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

National Provider Identifier

1336243690

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Registry record

Entity type Organization (Type 2)
Legal business name Ruby Jane Sia MD Inc
Practice address 16124 Kasota Rd, Ste C, Apple Valley, CA, 92307
Phone (760) 946-3888
Fax (760) 242-0388
Enumeration date Sep 8, 2006
Last updated in NPPES Aug 22, 2020

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Ruby Sia
Title President
Phone (760) 946-3888

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.

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Frequently asked questions

What is the NPI number for Ruby Jane Sia MD Inc?
The NPI for Ruby Jane Sia MD Inc is 1336243690, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Ruby Jane Sia MD Inc?
NPPES lists Ruby Sia (President) as the authorized official for this organization.

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