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RUBY JANE SIA MD INC
NPI 1336243690
Internal Medicine in Apple Valley, CA

Active since September 08, 2006CLIA 05D1017556 · Waiver
16124 KASOTA RD, STE C, APPLE VALLEY, CA 92307(760) 946-3888(760) 242-0388 Get Directions Write a Review

NPPES record last updated: August 22, 2020. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Ruby Jane Sia Md Inc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

RUBY JANE SIA MD INC (NPI 1336243690) is a healthcare organization registered as an internal medicine in Apple Valley, California and active in the NPI registry since September 2006. The organization holds a CLIA Waiver certificate valid through September 28, 2027 and lists Ruby Jane Sia, President, as its authorized official.

NPPES Registry Identity

NPI1336243690
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameRUBY JANE SIA MD INC
Location Address16124 KASOTA RD, STE CApple Valley, CA 92307
Mailing Address16124 Kasota Rd, Ste CApple Valley, CA 92307 · (760) 946-3888 · Fax (760) 242-0388
Phone(760) 946-3888
Fax(760) 242-0388
Organization SubpartNo
Authorized OfficialRuby Jane SiaPresident · (760) 946-3888
Enumeration DateSeptember 8, 2006
Last NPPES UpdateAugust 22, 2020
✔ NPI 1336243690 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
16124 KASOTA RD, Apple Valley, CA 92307
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ruby Jane Sia Md Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Ruby Jane Sia MD Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Ruby Jane Sia, MD
Internal Medicine
NPI 1518061860
16008 TUSCOLA ROAD SUITE 1
Apple Valley, CA 92307
(760) 946-3888
✔ PECOS✔ Accepts Medicare0.2 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 05D1017556

Ruby Jane Sia MD Inc · Apple Valley, CA
Active · expires Sep 28, 2027
CLIA Number05D1017556
Laboratory TypePhysician Office
Certificate Effective DateSeptember 29, 2025
Certificate Expiration DateSeptember 28, 2027
Laboratory DirectorRuby Jane B. Sia MD
Laboratory Phone(760) 946-3888
Laboratory LocationRuby Jane Sia MD Inc16008 Toscola Road, Apple Valley, CA 92307
CLIA data matches this NPI record on: Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Ruby Jane Sia MD Inc's NPI number?

The NPI number for Ruby Jane Sia MD Inc is 1336243690. It was assigned to this organization in the NPPES registry on September 8, 2006.

Where is Ruby Jane Sia MD Inc located?

Ruby Jane Sia MD Inc is located at 16124 Kasota Rd Ste C, Apple Valley, CA 92307. The listed phone number is (760) 946-3888.

What is Ruby Jane Sia MD Inc's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Ruby Jane Sia MD Inc enrolled in Medicare?

Yes. Ruby Jane Sia MD Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Ruby Jane Sia MD Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Ruby Jane Sia MD Inc. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Ruby Jane Sia MD Inc hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D1017556) is associated with this NPI, valid through September 28, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Ruby Jane Sia MD Inc was last updated on August 22, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.