Dr. Jin Yop Stephano Chang, MD, PhD
- Medicare services, 2024
- 52
- Medicare patients, 2024
- 83
- MIPS score, 2024
- 84
- Hospital affiliations
- 2
- Industry payments
- $21,605
- Practice address
- 200 Medical Plz, Los Angeles, CA 90024
- Practice phone
- Call (310) 206-4083
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
UCLA Medical Center
Los Angeles, California
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. Jin Yop Stephano Chang is a neurosurgeon in Los Angeles, California
Dr. Chang practices at UCLA Medical Center in Los Angeles, California.
Dr. Chang's NPI, 1760182281, was assigned on March 3, 2023. Dr. Chang graduated from University of Toronto Faculty of Medicine in 2012. Dr. Chang holds California license A182762.
- NPI
- 1760182281NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7214398809
- NPI enumeration date
- March 3, 2023
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (310) 206-4083
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 40
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jin Yop Stephano Chang practices at UCLA Medical Center in Los Angeles, California
Dr. Chang's primary practice is UCLA Medical Center, at 200 Medical Plz, Los Angeles, CA 90024 in Los Angeles County. The practice phone is (310) 206-4083.
- UCLA Medical Center200 Medical Plz, Los Angeles, CA 90024 · Los Angeles CountyPhone(310) 206-4083
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Jin Yop Stephano Chang is affiliated with 5 sites of care and 2 medical groups
Dr. Chang's primary practice is UCLA Medical Center in Los Angeles, California. Dr. Chang is also affiliated with UC Davis Medical Center. The medical group on file is UC Davis Medical Group. Dmand AI also links Dr. Chang to 1 more hospital, 2 group practices and clinics and 1 medical group, each 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. Jin Yop Stephano Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UCLA Medical Center | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jin Yop Stephano Chang is one of 846 neurosurgeons in California
Neurological surgery is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207T00000X. Dr. Chang is licensed in California.
Specialties and state licenses
- Neurological surgery, CaliforniaPrimary
Neurosurgeons near Dr. Chang
Counts of neurosurgeons 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. Jin Yop Stephano Chang billed Medicare for 52 services in 2024
CMS data shows 52 Medicare services from Dr. Chang across 3 procedure codes in 2024, for 83 Medicare patients. Medicare paid $8,881 for them.
Dr. Chang's Medicare services by type, 2024
- Office and hospital visits33
- Surgery19
Where Dr. Chang's Medicare services took place, 2024
- In an office3363%
- In a facility1937%
Dr. Chang compared with the California median for neurosurgeons, 2024
- Dr. Chang
- California median
- Medicare services
- 52vs 21676% below
- Medicare patients
- 83vs 15446% below
Medians across 679 neurosurgeons in California 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 neurosurgeons in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jin Yop Stephano Chang treated 83 Medicare patients in 2024, average age 67
CMS counts 83 Medicare patients who saw Dr. Chang in 2024. The largest group is 65 to 74, with 34 patients. 69% of them have high blood pressure, and 66% have high cholesterol. 31% are also on Medicaid. Their average risk score is 1.42, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chang's median patient age at 60, with 47% women.
Dr. Chang's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Chang's Medicare patients by sex, 2024
- Women3745%
- Men4655%
Chronic conditions among Dr. Chang's Medicare patients, 2024
- High blood pressure69%
- High cholesterol66%
- Arthritis52%
- Mood disorders48%
- Depression46%
- Parkinson's disease41%
- Anxiety36%
- Ischemic heart disease22%
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 60
Patient panel by sex, all payers
- Women47%
- Men52%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jin Yop Stephano Chang scored 84 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. Chang for performance year 2024, reported as part of a group. Dr. Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Chang as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Chang's MIPS scores, performance year 2024
- 84of 100Final score
- 68.7of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 63of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Laminectomy or laminotomy (partial removal of spine bones): 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Jin Yop Stephano Chang received $21,605 in industry payments from 2023 to 2025
CMS Open Payments shows 47 general payments to Dr. Chang from 4 drug and device companies from 2023 to 2025. Grants make up the largest share, 81% of the total. Medtronic, Inc. paid the most, $13,220.
General payments to Dr. Chang by program year, 2023 to 2025
General payments to Dr. Chang by kind, 2023 to 2025
- Grants$17,50081%
- Travel and lodging$2,57212%
- Food and beverage$1,5337%
Companies that paid Dr. Chang the most, 2023 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Jin Yop Stephano Chang graduated from University of Toronto Faculty of Medicine
Dr. Chang graduated from University of Toronto Faculty of Medicine in 2012.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Jin Yop Stephano Chang accepts plans from 9 insurance carriers
Dr. Chang is in network with 9 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- Blue Cross and Blue Shield of Kansas City
- +1 more carriersWith a free account
Plan types Dr. Chang accepts, by number of carriers
- Medicare8
- PPO7
- HMO4
- POS4
- EPO3
Source: Dmand AI Insurance Network Data
Sources for Dr. Jin Yop Stephano 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 | 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Jin Yop Stephano 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. Jin Yop Stephano Chang's NPI number?
Dr. Jin Yop Stephano Chang's NPI number is 1760182281. It was assigned on March 3, 2023, and it is active in the NPI Registry.
What kind of doctor is Dr. Jin Yop Stephano Chang?
Dr. Jin Yop Stephano Chang is a neurosurgeon in Los Angeles, California. The primary specialty in the NPI Registry is Neurological Surgery Physician (taxonomy code 207T00000X).
Where does Dr. Jin Yop Stephano Chang practice?
Dr. Chang practices at 200 Medical Plz, Los Angeles, CA 90024. Dr. Chang's primary practice is UCLA Medical Center in Los Angeles, California. Dmand AI also links Dr. Chang to 1 hospital, 2 group practices and clinics and 1 medical group.
What is Dr. Jin Yop Stephano Chang's office phone number?
The practice phone on file for Dr. Chang is (310) 206-4083.
What is Dr. Jin Yop Stephano Chang's medical license number?
Dr. Chang holds California license A182762.
Which hospitals is Dr. Jin Yop Stephano Chang affiliated with?
Dr. Chang is affiliated with UC Davis Medical Center. Dmand AI links Dr. Chang to 1 more hospital.
What medical group is Dr. Jin Yop Stephano Chang part of?
Dr. Chang is linked to UC Davis Medical Group. Dmand AI links Dr. Chang to 1 more medical group.
Does Dr. Jin Yop Stephano Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 52 services in 2024, and Dr. Chang accepts Medicare assignment.
Does Dr. Jin Yop Stephano Chang offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Chang as offering telehealth services.
What is Dr. Jin Yop Stephano Chang's MIPS score?
Dr. Chang's MIPS final score for performance year 2024 is 84 out of 100, reported as part of a group.
Show 6 more questionsShow fewer questions
How many Medicare patients does Dr. Jin Yop Stephano Chang see?
CMS counts 83 Medicare patients who saw Dr. Chang in 2024, with an average age of 67.
What services does Dr. Jin Yop Stephano Chang bill to Medicare?
In 2024, Dr. Chang's most billed Medicare services were office visit, new patient (99205), surgery: brain, spine and nerves (61886) and office visit, established patient (99215).
Where did Dr. Jin Yop Stephano Chang go to medical school?
Dr. Chang graduated from University of Toronto Faculty of Medicine in 2012.
Has Dr. Jin Yop Stephano Chang received payments from drug or device companies?
CMS Open Payments shows $21,605 in general payments to Dr. Chang from 4 companies from 2023 to 2025. The largest total came from Medtronic, Inc.
How long has Dr. Jin Yop Stephano Chang been practicing?
Dr. Chang graduated from medical school in 2012, 14 years ago.
What insurance does Dr. Jin Yop Stephano Chang accept?
Dr. Chang is in network with 9 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
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