Dr. Ruby Jean Chang, MD
- Medicare services, 2024
- 1,233
- Medicare patients, 2024
- 427
- Publications
- 5
- Hospital affiliations
- 4
- Medical group
- 1
- Practice address
- 1201 W 38th St, Austin, TX 78705
- Practice phone
- Call (512) 324-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chang's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Ruby Jean Chang is a pathologist in Austin, Texas
Dr. Chang practices at Ascension Seton Medical Center Austin in Austin, Texas, part of Ascension Health Alliance.
Dr. Chang's NPI, 1396109237, was assigned on April 6, 2016. Dr. Chang graduated from University Of Kentucky College Of Medicine in 2016. Dr. Chang holds Texas license T1918.
- NPI
- 1396109237NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3779985536
- NPI enumeration date
- April 6, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (512) 324-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ruby Jean Chang practices at Ascension Seton Medical Center Austin in Austin, Texas
Dr. Chang's primary practice is Ascension Seton Medical Center Austin, at 1201 W 38th St, Austin, TX 78705 in Travis County. The practice phone is (512) 324-1000.
- Ascension Seton Medical Center Austin1201 W 38th St, Austin, TX 78705 · Travis CountyPhone(512) 324-1000
Source: Dmand AI Affiliation Data
Dr. Ruby Jean Chang is affiliated with 5 sites of care and 1 medical group
Dr. Chang's primary practice is Ascension Seton Medical Center Austin in Austin, Texas, part of Ascension Health Alliance. Dr. Chang is also affiliated with Ascension Seton Northwest Hospital. The medical group on file is Oculus Pathology. Dmand AI also links Dr. Chang to 2 more hospitals and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ruby Jean Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ascension Seton Medical Center Austin | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Ascension Health Alliance and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Ruby Jean Chang is one of 1,145 pathologists in Texas
Anatomic pathology and clinical pathology is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207ZP0102X. Dr. Chang is board certified in pathology - anatomic/pathology - clinical by the American Board of Pathology. Dmand AI has Dr. Chang's licenses on file in 2 states: Texas and Pennsylvania.
Specialties and state licenses
- Anatomic pathology and clinical pathology, TexasPrimary
- Pennsylvania license
Pathologists near Dr. Chang
Counts of pathologists 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 Jean Chang billed Medicare for 1,233 services in 2024
CMS data shows 1,233 Medicare services from Dr. Chang across 13 procedure codes in 2024, for 427 Medicare patients. Medicare paid $39,407 for them.
Dr. Chang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 1,0152024: 1,23321%
Where Dr. Chang's Medicare services took place, 2024
- In an office282%
- In a facility1,20598%
Dr. Chang compared with the Texas median for pathologists, 2024
- Dr. Chang
- Texas median
- Medicare services
- 1,233vs 91834% above
- Medicare patients
- 427vs 35421% above
Medians across 976 pathologists in Texas with Dmand AI profiles that report each measure.
Dr. Chang'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.
Need commercial claims for Dr. Chang?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chang and other pathologists in Texas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ruby Jean Chang treated 427 Medicare patients in 2024, average age 73
CMS counts 427 Medicare patients who saw Dr. Chang in 2024. The largest group is 65 to 74, with 214 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 9% are also on Medicaid. Their average risk score is 1.59, 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. Chang's median patient age at 52, with 78% women.
Dr. Chang's Medicare patients by age, 2024
Dr. Chang's Medicare patients by sex, 2024
- Women22853%
- Men19947%
Chronic conditions among Dr. Chang's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis42%
- Ischemic heart disease37%
- Cancer32%
- Diabetes30%
- Anxiety28%
- Mood disorders27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chang's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 52
Patient panel by sex, all payers
- Women78%
- Men21%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Ruby Jean Chang takes part in Medicare
Dr. Chang 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)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Ruby Jean Chang has 5 publications on record
Dmand AI links 5 papers to Dr. Chang, published from 2017 to 2025. Dr. Chang has published most often in Int J Surg Pathol. Dr. Chang's most frequent co-authors are Hao Chen, MD, PhD, Shilpa Jain, MD and Kelley Suzanne Carrick, MD.
Dr. Chang's papers by year, 2017 to 2025
Dr. Chang's most frequent co-authors
- Hao Chen, MD, PhD2 shared papers
- Shilpa Jain, MD2 shared papers
- Kelley Suzanne Carrick, MD1 shared paper
Recent publications by Dr. Chang
Semin Diagn Pathol
Osteoporos Int
See who Dr. Chang researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chang works with, so you can find a warm path to the right pathologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ruby Jean Chang graduated from University Of Kentucky College Of Medicine
Dr. Chang graduated from University Of Kentucky College Of Medicine in 2016.
- Medical school
- Board certified in pathology - anatomic/pathology - clinical
Source: Dmand AI Professional Profile Data
Dr. Ruby Jean Chang accepts plans from 19 insurance carriers
Dr. Chang is in network with 19 carriers, including Aetna, United Healthcare and Elevance. PPO plans come from the most carriers, 12. Check the plan with the practice before a visit.
- Aetna
- United Healthcare
- Elevance
- Alliant Health Plans
- Blue Cross Blue Shield of Massachusetts
- Blue Cross Blue Shield of Michigan
- HCSC
- Regence Health Plans
- +11 more carriersWith a free account
Plan types Dr. Chang accepts, by number of carriers
- PPO12
- HMO9
- Medicare4
- POS4
- EPO3
Source: Dmand AI Insurance Network Data
Sources for Dr. Ruby Jean Chang'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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 Jean Chang
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 Jean Chang's NPI number?
Dr. Ruby Jean Chang's NPI number is 1396109237. It was assigned on April 6, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Ruby Jean Chang?
Dr. Ruby Jean Chang is a pathologist in Austin, Texas. The primary specialty in the NPI Registry is Anatomic Pathology & Clinical Pathology Physician (taxonomy code 207ZP0102X).
Where does Dr. Ruby Jean Chang practice?
Dr. Chang practices at 1201 W 38th St, Austin, TX 78705. Dr. Chang's primary practice is Ascension Seton Medical Center Austin in Austin, Texas, part of Ascension Health Alliance. Dmand AI also links Dr. Chang to 2 hospitals and 1 group practice or clinic.
What is Dr. Ruby Jean Chang's office phone number?
The practice phone on file for Dr. Chang is (512) 324-1000.
What is Dr. Ruby Jean Chang's medical license number?
Dr. Chang holds Texas license T1918, one of the licenses on file in 2 states.
Which states has Dr. Ruby Jean Chang been licensed in?
Dmand AI has state licenses on file for Dr. Chang in Texas (2021 to 2026) and Pennsylvania (2019 to 2026).
Which hospitals is Dr. Ruby Jean Chang affiliated with?
Dr. Chang practices at Ascension Seton Medical Center Austin in Austin, Texas. Dr. Chang is also affiliated with Ascension Seton Northwest Hospital. Dmand AI links Dr. Chang to 2 more hospitals.
What medical group is Dr. Ruby Jean Chang part of?
Dr. Chang is linked to Oculus Pathology.
Does Dr. Ruby Jean Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 1,233 services in 2024, and Dr. Chang accepts Medicare assignment.
How many Medicare patients does Dr. Ruby Jean Chang see?
CMS counts 427 Medicare patients who saw Dr. Chang in 2024, with an average age of 73.
Show 7 more questionsShow fewer questions
Is Dr. Ruby Jean Chang board certified?
Yes. Dr. Chang is board certified in pathology - anatomic/pathology - clinical by the American Board of Pathology.
What services does Dr. Ruby Jean Chang bill to Medicare?
In 2024, Dr. Chang's most billed Medicare services were lab and pathology test (88305), lab and pathology test (88341) and lab and pathology test (88307).
Where did Dr. Ruby Jean Chang go to medical school?
Dr. Chang graduated from University Of Kentucky College Of Medicine in 2016.
How long has Dr. Ruby Jean Chang been practicing?
Dr. Chang graduated from medical school in 2016, 10 years ago.
Does Dr. Ruby Jean Chang do research?
Dmand AI links 5 publications to Dr. Chang, published from 2017 to 2025.
Who does Dr. Ruby Jean Chang publish with?
Dr. Chang's most frequent co-authors are Hao Chen, MD, PhD (2 shared papers), Shilpa Jain, MD (2 shared papers) and Kelley Suzanne Carrick, MD (1 shared paper).
What insurance does Dr. Ruby Jean Chang accept?
Dr. Chang is in network with 19 carriers, including Aetna, United Healthcare and Elevance. PPO plans come from the most carriers, 12. Check the plan with the practice before a visit.
Selling to anatomic pathology and clinical pathology practices?
See pathologists in Texas by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card