Dr. Ruby Jane Sia, MD
- Medicare services, 2024
- 390
- Medicare patients, 2024
- 134
- Part D claims, 2024
- 9,893
- Industry payments
- $12,698
- Affiliated sites
- 1
- Practice address
- 16008 Tuscola Rd, Apple Valley, CA 92307
- Practice phone
- Call (760) 946-3888
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Ruby Jane Sia MD Inc
Apple Valley, California
Find Dr. Sia's professional email, personal email and mobile number
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Dr. Ruby Jane Sia is an internist in Apple Valley, California
Dr. Sia practices at Ruby Jane Sia MD Inc in Apple Valley, California.
Dr. Sia's NPI, 1518061860, was assigned on September 8, 2006. Dr. Sia graduated from University of the East College of Medicine in 1991. Dr. Sia holds California license A63962.
- NPI
- 1518061860NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5496658478
- NPI enumeration date
- September 8, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (760) 946-3888
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ruby Jane Sia practices at Ruby Jane Sia MD Inc in Apple Valley, California
Dr. Sia's primary practice is Ruby Jane Sia MD Inc, at 16008 Tuscola Rd, Apple Valley, CA 92307 in San Bernardino County. The practice phone is (760) 946-3888.
- Ruby Jane Sia MD Inc16008 Tuscola Rd, Apple Valley, CA 92307 · San Bernardino CountyPhone(760) 946-3888
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Ruby Jane Sia is affiliated with 2 sites of care
Dr. Sia's primary practice is Ruby Jane Sia MD Inc in Apple Valley, California. Dmand AI also links Dr. Sia to 1 physician office, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Ruby Jane Sia's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sia practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ruby Jane Sia MD Inc | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ruby Jane Sia is one of 16,751 internists in California
Internal medicine is Dr. Sia's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Sia's licenses on file in 3 states: California, Arizona and Wisconsin.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- Arizona license
- Wisconsin license
Clinical focus
Dmand AI lists acute gallbladder or bile duct inflammation, acute sinusitis, acute skin infection, anxiety, arthritis, asthma, bronchitis and chronic diabetes among the conditions Dr. Sia treats.
Internists near Dr. Sia
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Ruby Jane Sia billed Medicare for 390 services in 2024
CMS data shows 390 Medicare services from Dr. Sia across 5 procedure codes in 2024, for 134 Medicare patients. Medicare paid $32,340 for them. Every service was in an office.
Dr. Sia's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3992024: 32219%
- Other services
- 2023: 352024: 6894%
- Tests and treatments
- 2023: 312024: 0100%
Dr. Sia compared with the California median for internists, 2024
- Dr. Sia
- California median
- Medicare services
- 390vs 3618% above
- Medicare patients
- 134vs 15111% below
- Part D claims
- 9,101vs 42121.6 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Sia's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Sia and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ruby Jane Sia treated 134 Medicare patients in 2024, average age 72
CMS counts 134 Medicare patients who saw Dr. Sia in 2024. The largest group is 65 to 74, with 61 patients. 75% of them have high cholesterol, and 72% have high blood pressure. 43% are also on Medicaid. Their average risk score is 1.54, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Sia's median patient age at 62, with 74% women.
Dr. Sia's Medicare patients by age, 2024
Dr. Sia's Medicare patients by sex, 2024
- Women10075%
- Men3425%
Chronic conditions among Dr. Sia's Medicare patients, 2024
- High cholesterol75%
- High blood pressure72%
- Diabetes44%
- Arthritis37%
- Mood disorders26%
- Chronic kidney disease25%
- Ischemic heart disease23%
- Depression22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Sia's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women74%
- Men26%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ruby Jane Sia wrote 9,893 Medicare Part D claims in 2024
In 2024, Dr. Sia wrote 9,893 Medicare Part D claims for 343 patients. 85% of them were for generic drugs. CMS names the drug for 9,101 of them, across 161 drugs with 11 or more claims each, at $714,020 in total drug cost. In 2023, CMS named 9,658 claims across 176 drugs.
Dr. Sia's Part D claims by kind of drug, 2024
- Generic8,395 claims85%
- Brand-name1,423 claims14%
- Other75 claims1%
Dr. Sia's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Sia's Part D claims, 2024
- Opioids8%788 of 9,893 claims
- Antibiotics4%389 of 9,893 claims
- Antipsychotics, patients 65 and over0%37 of 9,893 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 9,6582024: 9,1016%
Drugs named by CMS: 161 in 2024, 176 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Ruby Jane Sia takes part in Medicare
Dr. Sia accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Ruby Jane Sia received $12,698 in industry payments from 2016 to 2025
CMS Open Payments shows 691 general payments to Dr. Sia from 54 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $1,863.
General payments to Dr. Sia by program year, 2016 to 2025
General payments to Dr. Sia by kind, 2016 to 2025
- Food and beverage$12,655100%
- Education$430%
Companies that paid Dr. Sia the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ruby Jane Sia has 1 award and honors on record
Dmand AI lists 1 award for Dr. Sia, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Sia
- 2013
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Ruby Jane Sia graduated from University of the East College of Medicine
Dr. Sia graduated from University of the East College of Medicine in 1991.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Ruby Jane Sia accepts plans from 6 insurance carriers
Dr. Sia is in network with 6 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- CMS Medicare
Plan types Dr. Sia accepts, by number of carriers
- Medicare6
- PPO5
- HMO2
- POS2
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Ruby Jane Sia's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Ruby Jane Sia
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Ruby Jane Sia's NPI number?
Dr. Ruby Jane Sia's NPI number is 1518061860. It was assigned on September 8, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ruby Jane Sia?
Dr. Ruby Jane Sia is an internist in Apple Valley, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Ruby Jane Sia practice?
Dr. Sia practices at 16008 Tuscola Rd, Apple Valley, CA 92307. Dr. Sia's primary practice is Ruby Jane Sia MD Inc in Apple Valley, California. Dmand AI also links Dr. Sia to 1 physician office.
What is Dr. Ruby Jane Sia's office phone number?
The practice phone on file for Dr. Sia is (760) 946-3888.
What is Dr. Ruby Jane Sia's medical license number?
Dr. Sia holds California license A63962, one of the licenses on file in 3 states.
Which states has Dr. Ruby Jane Sia been licensed in?
Dmand AI has state licenses on file for Dr. Sia in California (1997 to 2027), Arizona (1998 to 2000) and Wisconsin (1998 to 1999).
Does Dr. Ruby Jane Sia accept Medicare?
Yes. CMS data shows Dr. Sia billed Medicare for 390 services in 2024, and Dr. Sia accepts Medicare assignment.
How many Medicare patients does Dr. Ruby Jane Sia see?
CMS counts 134 Medicare patients who saw Dr. Sia in 2024, with an average age of 72.
What services does Dr. Ruby Jane Sia bill to Medicare?
In 2024, Dr. Sia's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and medicare service (G0439).
Where did Dr. Ruby Jane Sia go to medical school?
Dr. Sia graduated from University of the East College of Medicine in 1991.
Show 4 more questionsShow fewer questions
What drugs does Dr. Ruby Jane Sia prescribe most?
In 2024 Medicare Part D data, Dr. Sia's most prescribed drugs by claims were Levothyroxine Sodium, Hydrocodone-Acetaminophen and Gabapentin.
Has Dr. Ruby Jane Sia received payments from drug or device companies?
CMS Open Payments shows $12,698 in general payments to Dr. Sia from 54 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Ruby Jane Sia been practicing?
Dr. Sia graduated from medical school in 1991, 35 years ago.
What insurance does Dr. Ruby Jane Sia accept?
Dr. Sia is in network with 6 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
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