Jason D. Chang, OD
- Medicare patients, 2024
- 95
- Part D claims, 2024
- 111
- Hospital affiliations
- 1
- Industry payments
- $18
- Medical group
- 1
- Practice address
- 11301 Wilshire Blvd., Los Angeles, CA 90073
- Practice phone
- Call (310) 478-3711
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Jason 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.
Jason D. Chang is an optometrist in Los Angeles, California
Jason Chang practices at West Los Angeles VA Medical Center in Los Angeles, California, part of Veterans Health Administration.
Jason Chang's NPI, 1558400663, was assigned on February 5, 2007. Jason Chang graduated from University of California - School of Optometry in 2006. Jason Chang holds California license 13148T.
- NPI
- 1558400663NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8729160056
- NPI enumeration date
- February 5, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (310) 478-3711
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 46
- Medical school graduation
- 2006
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Jason D. Chang practices at West Los Angeles VA Medical Center in Los Angeles, California
Jason Chang's primary practice is West Los Angeles VA Medical Center, at 11301 Wilshire Blvd., Los Angeles, CA 90073 in Los Angeles County. The practice phone is (310) 478-3711.
- West Los Angeles VA Medical Center11301 Wilshire Blvd., Los Angeles, CA 90073 · Los Angeles CountyPhone(310) 478-3711
Source: Dmand AI Affiliation Data
Jason D. Chang is affiliated with 2 sites of care and 1 medical group
Jason Chang's primary practice is West Los Angeles VA Medical Center in Los Angeles, California, part of Veterans Health Administration. Dmand AI also links Jason Chang to 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Jason D. Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Jason Chang practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| West Los Angeles VA Medical Center | Available with a free account |
| +1 more site and 1 medical group | 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 Veterans Health Administration and 6.2K+ hospitals, with verified contacts in the same login.
Jason D. Chang is one of 7,206 optometrists in California
Optometrist is Jason Chang's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Jason Chang is licensed in California.
Specialties and state licenses
- Optometrist, CaliforniaPrimary
Optometrists near Jason Chang
Counts of optometrists 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
Jason D. Chang treated 95 Medicare patients in 2024, average age 75
CMS counts 95 Medicare patients who saw Jason Chang in 2024. The largest group is 65 to 74, with 51 patients. 68% of them have high cholesterol, and 53% have high blood pressure. Their average risk score is 0.75, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Jason Chang's median patient age at 70, with 50% women.
Jason Chang's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Jason Chang's Medicare patients by sex, 2024
- Women6063%
- Men3537%
Chronic conditions among Jason Chang's Medicare patients, 2024
- High cholesterol68%
- High blood pressure53%
- Arthritis40%
- Ischemic heart disease19%
- Cancer18%
- Depression17%
- Mood disorders17%
- Anxiety14%
Share of Medicare patients with each condition. A patient can have several.
Jason 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
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Jason D. Chang wrote 111 Medicare Part D claims in 2024
In 2024, Jason Chang wrote 111 Medicare Part D claims for 34 patients. 42% of them were for generic drugs.
Jason Chang's Part D claims by kind of drug, 2024
- Generic47 claims42%
- Brand-name64 claims58%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Jason D. Chang takes part in Medicare
Jason Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Cataract surgery: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (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.
Jason D. Chang received $18 in industry payments in 2025
CMS Open Payments shows 1 general payment to Jason Chang from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Alcon Laboratories Inc paid the most, $18.
Companies that paid Jason Chang the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Jason D. Chang graduated from University of California - School of Optometry
Jason Chang graduated from University of California - School of Optometry in 2006.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Jason D. 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 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 (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 Jason D. 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 Jason D. Chang's NPI number?
Jason D. Chang's NPI number is 1558400663. It was assigned on February 5, 2007, and it is active in the NPI Registry.
What does Jason D. Chang specialize in?
Jason D. Chang is an optometrist in Los Angeles, California. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Jason D. Chang practice?
Jason Chang practices at 11301 Wilshire Blvd., Los Angeles, CA 90073. Jason Chang's primary practice is West Los Angeles VA Medical Center in Los Angeles, California, part of Veterans Health Administration. Dmand AI also links Jason Chang to 1 group practice or clinic and 1 medical group.
What is Jason D. Chang's office phone number?
The practice phone on file for Jason Chang is (310) 478-3711.
What is Jason D. Chang's medical license number?
Jason Chang holds California license 13148T.
Which hospitals is Jason D. Chang affiliated with?
Jason Chang practices at West Los Angeles VA Medical Center in Los Angeles, California.
Does Jason D. Chang accept Medicare?
Yes. CMS lists Jason Chang as accepting Medicare assignment.
How many Medicare patients does Jason D. Chang see?
CMS counts 95 Medicare patients who saw Jason Chang in 2024, with an average age of 75.
Where did Jason D. Chang go to medical school?
Jason Chang graduated from University of California - School of Optometry in 2006.
Has Jason D. Chang received payments from drug or device companies?
CMS Open Payments shows $18 in general payments to Jason Chang from 1 company from 2025 to 2025. The largest total came from Alcon Laboratories Inc.
How long has Jason D. Chang been practicing?
Jason Chang graduated from medical school in 2006, 20 years ago.
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