Dr. Brian J. Chang, MD
- Medicare services, 2024
- 734
- Medicare patients, 2024
- 311
- Part D claims, 2024
- 2,938
- Industry payments
- $706
- Affiliated sites
- 1
- Practice address
- 14550 Soledad Canyon Rd, Canyon Country, CA 91387
- Practice phone
- Call (818) 837-5776
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Facey Endoscopy Center
Canyon Country, 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. Brian J. Chang is an ophthalmologist in Canyon Country, California
Dr. Chang practices at Facey Endoscopy Center in Canyon Country, California.
Dr. Chang's NPI, 1629335567, was assigned on April 17, 2012. Dr. Chang graduated from University of California, San Diego School of Medicine in 2012. Dr. Chang holds California license A128360.
- NPI
- 1629335567NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7214228253
- NPI enumeration date
- April 17, 2012
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (818) 837-5776
- 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. Brian J. Chang practices at Facey Endoscopy Center in Canyon Country, California
Dr. Chang's primary practice is Facey Endoscopy Center, at 14550 Soledad Canyon Rd, Canyon Country, CA 91387 in Los Angeles County. The practice phone is (818) 837-5776.
- Facey Endoscopy Center14550 Soledad Canyon Rd, Canyon Country, CA 91387 · Los Angeles CountyPhone(818) 837-5776
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Brian J. Chang is affiliated with 2 sites of care and 1 medical group
Dr. Chang's primary practice is Facey Endoscopy Center in Canyon Country, California. The medical group on file is Facey Medical Group. Dmand AI also links Dr. Chang to 1 more ambulatory surgery center, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Brian J. Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Facey Endoscopy Center | 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. Brian J. Chang is one of 2,621 ophthalmologists in California
Ophthalmology is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Chang is licensed in California.
Specialties and state licenses
- Ophthalmology, CaliforniaPrimary
Ophthalmologists near Dr. Chang
Counts of ophthalmologists 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. Brian J. Chang billed Medicare for 734 services in 2024
CMS data shows 734 Medicare services from Dr. Chang across 9 procedure codes in 2024, for 311 Medicare patients. Medicare paid $63,632 for them.
Dr. Chang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 4292024: 48613%
- Office and hospital visits
- 2023: 1782024: 20616%
- Surgery
- 2023: 372024: 4214%
Where Dr. Chang's Medicare services took place, 2024
- In an office69294%
- In a facility426%
Dr. Chang compared with the California median for ophthalmologists, 2024
- Dr. Chang
- California median
- Medicare services
- 734vs 1,07932% below
- Medicare patients
- 311vs 42126% below
- Part D claims
- 2,862vs 6184.6 times
Medians across 2,568 ophthalmologists 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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chang and other ophthalmologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Brian J. Chang treated 311 Medicare patients in 2024, average age 74
CMS counts 311 Medicare patients who saw Dr. Chang in 2024. The largest group is 65 to 74, with 168 patients. 75% of them have high cholesterol, and 67% have high blood pressure. 20% are also on Medicaid. Their average risk score is 1.07, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chang's median patient age at 70, with 62% women.
Dr. Chang's Medicare patients by age, 2024
Dr. Chang's Medicare patients by sex, 2024
- Women17958%
- Men13242%
Chronic conditions among Dr. Chang's Medicare patients, 2024
- High cholesterol75%
- High blood pressure67%
- Arthritis46%
- Diabetes34%
- Mood disorders23%
- Chronic kidney disease22%
- Depression21%
- Anxiety18%
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 70
Patient panel by sex, all payers
- Women62%
- Men37%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Brian J. Chang wrote 2,938 Medicare Part D claims in 2024
In 2024, Dr. Chang wrote 2,938 Medicare Part D claims for 757 patients. 65% of them were for generic drugs. CMS names the drug for 2,862 of them, across 17 drugs with 11 or more claims each, at $125,541 in total drug cost. In 2023, CMS named 2,920 claims across 18 drugs.
Dr. Chang's Part D claims by kind of drug, 2024
- Generic1,898 claims65%
- Brand-name1,040 claims35%
Dr. Chang'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. Chang's Part D claims, 2024
- Antibiotics4%118 of 2,938 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: 2,9202024: 2,8622%
Drugs named by CMS: 17 in 2024, 18 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
Dr. Brian J. Chang ranks in the 61st percentile for cataract surgery in Medicare
Dr. Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 45 procedures of cataract surgery by Dr. Chang, more than 61% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Chang ranks in Medicare procedure volume
- Cataract surgery
- 61st percentile45 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Brian J. Chang received $706 in industry payments from 2016 to 2025
CMS Open Payments shows 16 general payments to Dr. Chang from 11 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Glaukos Corporation paid the most, $267.
General payments to Dr. Chang by program year, 2016 to 2025
Companies that paid Dr. Chang 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. Brian J. Chang graduated from University of California, San Diego School of Medicine
Dr. Chang graduated from University of California, San Diego School of Medicine in 2012.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Brian J. 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 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) |
| 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)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 |
| 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. Brian J. 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. Brian J. Chang's NPI number?
Dr. Brian J. Chang's NPI number is 1629335567. It was assigned on April 17, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. Brian J. Chang?
Dr. Brian J. Chang is an ophthalmologist in Canyon Country, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Brian J. Chang practice?
Dr. Chang practices at 14550 Soledad Canyon Rd, Canyon Country, CA 91387. Dr. Chang's primary practice is Facey Endoscopy Center in Canyon Country, California. Dmand AI also links Dr. Chang to 1 ambulatory surgery center.
What is Dr. Brian J. Chang's office phone number?
The practice phone on file for Dr. Chang is (818) 837-5776.
What is Dr. Brian J. Chang's medical license number?
Dr. Chang holds California license A128360.
What medical group is Dr. Brian J. Chang part of?
Dr. Chang is linked to Facey Medical Group.
Does Dr. Brian J. Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 734 services in 2024, and Dr. Chang accepts Medicare assignment.
How many Medicare patients does Dr. Brian J. Chang see?
CMS counts 311 Medicare patients who saw Dr. Chang in 2024, with an average age of 74.
What services does Dr. Brian J. Chang bill to Medicare?
In 2024, Dr. Chang's most billed Medicare services were office visit, established patient (99213), eye exam or test (92014) and eye exam or test (92083).
Where did Dr. Brian J. Chang go to medical school?
Dr. Chang graduated from University of California, San Diego School of Medicine in 2012.
Show 3 more questionsShow fewer questions
What drugs does Dr. Brian J. Chang prescribe most?
In 2024 Medicare Part D data, Dr. Chang's most prescribed drugs by claims were Latanoprost, Prednisolone Acetate and Ketorolac Tromethamine.
Has Dr. Brian J. Chang received payments from drug or device companies?
CMS Open Payments shows $706 in general payments to Dr. Chang from 11 companies from 2016 to 2025. The largest total came from Glaukos Corporation.
How long has Dr. Brian J. Chang been practicing?
Dr. Chang graduated from medical school in 2012, 14 years ago.
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