Are you Ruby Chang, M.D.? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileAt a glance
- 2125 Oak Grove Rd, Suite 200, Walnut Creek, CA 94598
About Dr. Chang
Based in Walnut Creek, CA, Ruby Chang, M.D. is listed in the NPI registry under diagnostic radiology. Ruby graduated from Rutgers New Jersey Medical School in 1998. Medicare claims data shows Ruby provided 19,738 services to 8,630 patients. The services billed most often include injection, gadoterate meglumine, 0.1 ml, screening 3d breast mammography, and screening mammography. NPI 1164459335 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (925) 296-7150
- Email not available
Practice Locations
2125 OAK GROVE RD SUITE 200
Walnut Creek, CA 94598
Conditions Evaluated or Diagnosed
Within Diagnostic Radiology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Abdomen & Pelvis
- Abdominal Pain
- Appendicitis
- Diverticulitis
- Enlarged prostate
- Gallstones
- Kidney stones
- Liver Lesions
- Ovarian cysts
Bone & Joint
- Ankle Sprain or Fracture
- Bone fractures
- Heel pain
- Hip osteoarthritis
- Osteoporosis
- Rotator cuff tear
- Torn meniscus
Brain & Head
- Brain aneurysm
- Brain tumor
- Concussion in Children
- Migraines
- Sinus infection
- Transient ischemic attack
Brain & nerves
Breast
Chest & Heart
General
Heart & blood vessels
Joint & bone
Liver & digestion
Lungs & breathing
Men's health
Neck & Thyroid
Nerve pain
Pelvic health
Spine
Spine & back
Vascular
Women's health
Procedures & services
Abdominal imaging
Biopsies
Bone Density
Breast Imaging
CT Scan
Digestive & liver
Fluoroscopy
General imaging
Heart & blood vessels
Joint & bone
MRI
Nuclear Medicine
Pelvic imaging
Screening & Prevention
Spine & back
Ultrasound
- Abdominal Ultrasound
- Carotid Ultrasound
- Leg Vein Ultrasound
- Pelvic ultrasound
- Scrotal Ultrasound
- Thyroid ultrasound
- Ultrasound
Urinary & kidney
Women's health
X-Ray
Procedures Most Often Billed to Medicare
19,738 services · 8,630 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Biopsy of breast and placement of locating device using ultrasound, first growth | Procedure | 19083 |
30 | More often than most peers in Diagnostic Radiology |
| Biopsy of breast and placement of locating device using x-ray with needle, first growth | Procedure | 19081 |
21 | More often than most peers in Diagnostic Radiology |
| Screening 3d breast mammography | Imaging | 77063 |
3,410 | More than most peers in Diagnostic Radiology |
| Screening mammography | Imaging | 77067 |
3,406 | More than most peers in Diagnostic Radiology |
| Diagnostic mammography of 1 breast | Imaging | 77065 |
240 | More than most peers in Diagnostic Radiology |
| Limited ultrasound scan of 1 breast | Imaging | 76642 |
229 | More than most peers in Diagnostic Radiology |
| Diagnostic mammography of both breasts | Imaging | 77066 |
205 | More than most peers in Diagnostic Radiology |
| X-ray of chest, 1 view | Imaging | 71045 |
166 | Less often than most peers in Diagnostic Radiology |
| Dxa bone density measurement of hip, pelvis, spine | Imaging | 77080 |
89 | As often as other peers in Diagnostic Radiology |
| X-ray of chest, 2 views | Imaging | 71046 |
69 | As often as other peers in Diagnostic Radiology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other radiologists at this location 8
Same specialty, same street address — most likely the same department or group.
Other radiologists in Walnut Creek 4
Same specialty, same city.
Trained at Rutgers New Jersey Medical School 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1998 at Rutgers New Jersey Medical School 8
Providers who graduated from the same medical school in the same year.
Also performs Biopsy of breast and placement of locating device using ultrasound, first growth 8
Providers in CA who bill this service to Medicare most often.
Common questions
What kind of doctor is Ruby Chang?
Ruby Chang is a radiologist in Walnut Creek, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Diagnostic Radiology”.
NPI registry
What is Ruby Chang's address?
Ruby Chang is listed at 2125 Oak Grove Rd Suite 200, Walnut Creek, CA 94598. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Ruby Chang?
The number on file is (925) 296-7150. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Ruby Chang?
Ruby Chang's National Provider Identifier is 1164459335. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Ruby Chang train?
Ruby Chang attended Rutgers New Jersey Medical School, graduating in 1998. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Ruby Chang have?
Ruby Chang has 28 years experience. Calculated from a graduation year of 1998, reported in the CMS National Downloadable File.
CMS public data
What procedures does Ruby Chang perform?
According to Medicare billing data, Ruby Chang performs procedures including biopsy of breast and placement of locating device using ultrasound, first growth and biopsy of breast and placement of locating device using x-ray with needle, first growth; reads or performs imaging such as screening 3d breast mammography and screening mammography. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Ruby Chang's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Ruby Chang. If this is you, claiming it is free.
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