Ruby Jane Sia MD Inc
NPI 1336243690 · Internal Medicine Physician · Apple Valley, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ruby Jane Sia MD Inc is a Internal Medicine Physician organization in Apple Valley, CA (NPI 1336243690).
Provider details
- NPI number
- 1336243690
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Ruby Sia, President(760) 946-3888
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-08
- Last updated
- 2020-08-22
Frequently asked questions
- What is Ruby Jane Sia MD Inc's NPI number?
- Ruby Jane Sia MD Inc's National Provider Identifier (NPI) is 1336243690, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Ruby Jane Sia MD Inc?
- Ruby Jane Sia MD Inc is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ruby Jane Sia MD Inc located?
- Ruby Jane Sia MD Inc's practice location on file with NPPES is 16124 Kasota Rd, Apple Valley, CA 92307.
- What is Ruby Jane Sia MD Inc's phone number?
- The practice phone number listed in the NPPES registry for Ruby Jane Sia MD Inc is (760) 946-3888.
- Does Ruby Jane Sia MD Inc accept Medicare?
- Ruby Jane Sia MD Inc is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Ruby Jane Sia MD Inc?
- The authorized official listed on Ruby Jane Sia MD Inc's NPPES record is Ruby Sia, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Ruby Jane Sia MD Inc's NPI active?
- Yes — Ruby Jane Sia MD Inc's NPI (1336243690) is active in the NPPES registry as of the last update on 2020-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.