Dr. Lung Chang, MD
- Medicare services, 2024
- 168
- Medicare patients, 2024
- 79
- Part D claims, 2024
- 979
- Industry payments
- $1,863
- Affiliated sites
- 1
- Practice address
- 1528 S Garfield Ave, Alhambra, CA 91801
- Practice phone
- Call (626) 289-5432
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Chang Eye Clinic
Physician office · Alhambra, 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. Lung Chang is an ophthalmologist in Alhambra, California
Dr. Chang practices at Chang Eye Clinic in Alhambra, California.
Dr. Chang's NPI, 1013935444, was assigned on July 17, 2006. Dr. Chang graduated from Kaohsiung Medical College in 1962. Dr. Chang holds California license C39371.
- NPI
- 1013935444NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3072548700
- NPI enumeration date
- July 17, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (626) 289-5432
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 90
- Medical school graduation
- 1962
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Lung Chang practices at Chang Eye Clinic in Alhambra, California
Dr. Chang's primary practice is Chang Eye Clinic, at 1528 S Garfield Ave, Alhambra, CA 91801. The practice phone is (626) 289-5432.
- Chang Eye Clinic1528 S Garfield Ave, Alhambra, CA 91801Phone(626) 289-5432
Source: Dmand AI Affiliation Data
Dr. Lung Chang is affiliated with 1 site of care
Dr. Chang's primary practice is Chang Eye Clinic in Alhambra, California.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Lung 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 |
|---|---|
| Chang Eye Clinic | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Lung 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 board certified in ophthalmology by the American Board of Ophthalmology. Dmand AI has Dr. Chang's licenses on file in 5 states: California, Alabama, Mississippi, Georgia and Texas.
Specialties and state licenses
- Ophthalmology, CaliforniaPrimary
- Alabama license
- Mississippi license
- Georgia license
- Texas license
Clinical focus
Dmand AI lists age-related macular degeneration, cataract, conjunctivitis, eye infection or inflammation, eyelid inflammation, laser destruction of retinal or choroid lesions, scleritis and shingles among the conditions Dr. Chang treats.
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. Lung Chang billed Medicare for 168 services in 2024
CMS data shows 168 Medicare services from Dr. Chang across 3 procedure codes in 2024, for 79 Medicare patients. Medicare paid $10,859 for them. Every service was in an office.
Dr. Chang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 552024: 168205%
Dr. Chang compared with the California median for ophthalmologists, 2024
- Dr. Chang
- California median
- Medicare services
- 168vs 1,07984% below
- Medicare patients
- 79vs 42181% below
- Part D claims
- 925vs 61850% above
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.
Need commercial claims for Dr. Chang?
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. Lung Chang treated 79 Medicare patients in 2024, average age 76
CMS counts 79 Medicare patients who saw Dr. Chang in 2024. The largest group is 65 to 74, with 40 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 85% are also on Medicaid. Their average risk score is 1.33, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chang's median patient age at 68, with 54% 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
- Women4658%
- Men3342%
Chronic conditions among Dr. Chang's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes57%
- Arthritis56%
- Chronic kidney disease39%
- Ischemic heart disease35%
- Osteoporosis28%
- Mood disorders24%
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 68
Patient panel by sex, all payers
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Lung Chang wrote 979 Medicare Part D claims in 2024
In 2024, Dr. Chang wrote 979 Medicare Part D claims for 273 patients. 82% of them were for generic drugs. CMS names the drug for 925 of them, across 14 drugs with 11 or more claims each, at $60,292 in total drug cost. In 2023, CMS named 864 claims across 11 drugs.
Dr. Chang's Part D claims by kind of drug, 2024
- Generic803 claims82%
- Brand-name176 claims18%
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
- Antibiotics5%50 of 979 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: 8642024: 9257%
Drugs named by CMS: 14 in 2024, 11 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
How Dr. Lung 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)
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Dr. Lung Chang received $1,863 in industry payments from 2016 to 2023
CMS Open Payments shows 24 general payments to Dr. Chang from 17 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 99% of the total. Amarin Pharma Inc. paid the most, $405.
General payments to Dr. Chang by program year, 2016 to 2023
General payments to Dr. Chang by kind, 2016 to 2023
- Food and beverage$1,84299%
- Education$201%
Companies that paid Dr. Chang the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Lung Chang has 1 award and honors on record
Dmand AI lists 1 award for Dr. Chang, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Chang
- 2013
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Lung Chang graduated from Kaohsiung Medical College
Dr. Chang graduated from Kaohsiung Medical College in 1962.
- Medical school
- Board certified in ophthalmology
Source: Dmand AI Professional Profile Data
Dr. Lung Chang accepts plans from 16 insurance carriers
Dr. Chang is in network with 16 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 11. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Humana
- LA Care
- Blue Cross Blue Shield of Massachusetts
- +8 more carriersWith a free account
Plan types Dr. Chang accepts, by number of carriers
- Medicare11
- PPO10
- HMO9
- EPO4
- POS4
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Lung 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 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Lung 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. Lung Chang's NPI number?
Dr. Lung Chang's NPI number is 1013935444. It was assigned on July 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Lung Chang?
Dr. Lung Chang is an ophthalmologist in Alhambra, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Lung Chang practice?
Dr. Chang practices at 1528 S Garfield Ave, Alhambra, CA 91801. Dr. Chang's primary practice is Chang Eye Clinic in Alhambra, California.
What is Dr. Lung Chang's office phone number?
The practice phone on file for Dr. Chang is (626) 289-5432.
What is Dr. Lung Chang's medical license number?
Dr. Chang holds California license C39371, one of the licenses on file in 5 states.
Which states has Dr. Lung Chang been licensed in?
Dmand AI has state licenses on file for Dr. Chang in California (1980 to 2026), Alabama (1977 to 2021), Mississippi (1970 to 2021), Georgia (1972 to 2019) and Texas (1972 to 2004).
Does Dr. Lung Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 168 services in 2024, and Dr. Chang accepts Medicare assignment.
How many Medicare patients does Dr. Lung Chang see?
CMS counts 79 Medicare patients who saw Dr. Chang in 2024, with an average age of 76.
Is Dr. Lung Chang board certified?
Yes. Dr. Chang is board certified in ophthalmology by the American Board of Ophthalmology.
What services does Dr. Lung Chang bill to Medicare?
In 2024, Dr. Chang's most billed Medicare services were eye exam or test (92133), eye exam or test (92014) and eye exam or test (92004).
Show 5 more questionsShow fewer questions
Where did Dr. Lung Chang go to medical school?
Dr. Chang graduated from Kaohsiung Medical College in 1962.
What drugs does Dr. Lung Chang prescribe most?
In 2024 Medicare Part D data, Dr. Chang's most prescribed drugs by claims were Azelastine HCl, Ketorolac Tromethamine and Timolol Maleate.
Has Dr. Lung Chang received payments from drug or device companies?
CMS Open Payments shows $1,863 in general payments to Dr. Chang from 17 companies from 2016 to 2023. The largest total came from Amarin Pharma Inc.
How long has Dr. Lung Chang been practicing?
Dr. Chang graduated from medical school in 1962, 64 years ago.
What insurance does Dr. Lung Chang accept?
Dr. Chang is in network with 16 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 11. Check the plan with the practice before a visit.
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