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Dr. Steven David Chang, MD
NPI1174598239
- Medicare services, 2024
- 6,504
- Medicare patients, 2024
- 1,608
- Part D claims, 2024
- 2,211
- Publications
- 1
- MIPS score, 2024
- 21
- Practice address
- 3160 Telegraph Rd, Ventura, CA 93003
- Practice phone
- Call (805) 652-5011
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Community Memorial Hospital San Buenaventura
Ventura, California
Find Dr. Chang's professional email, personal email and mobile number
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Dr. Steven David Chang is an ophthalmologist in Ventura, California
Dr. Chang practices at Community Memorial Hospital San Buenaventura in Ventura, California.
Dr. Chang's NPI, 1174598239, was assigned on February 22, 2006. Dr. Chang graduated from UCSF School of Medicine in 1990. Dr. Chang holds California license G79197.
NPI and contact details
- NPI
- 1174598239NPI Registry (opens in a new tab)
- NPI enumeration date
- February 22, 2006
- NPI status
- Active
- Practice phone
- (805) 652-5011
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 62
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Steven David Chang practices at Community Memorial Hospital San Buenaventura in Ventura, California
Dr. Chang's primary practice is Community Memorial Hospital San Buenaventura, at 3160 Telegraph Rd, Ventura, CA 93003 in Ventura County. The practice phone is (805) 652-5011.
- Community Memorial Hospital San Buenaventura3160 Telegraph Rd, Ventura, CA 93003 · Ventura CountyPhone(805) 652-5011
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Steven David Chang is affiliated with 2 sites of care
Dr. Chang's primary practice is Community Memorial Hospital San Buenaventura in Ventura, California. Dmand AI also links Dr. Chang to 1 physician office, named with a free account.
Community Memorial Hospital San BuenaventuraPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Steven David 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 |
|---|---|
| Community Memorial Hospital San Buenaventura | 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. Steven David 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. Dr. Chang is licensed in California.
Specialties and state licenses
- Ophthalmology, CaliforniaPrimary
Clinical focus
Dmand AI lists cataract, cataract surgery with lens implant, cold sores or genital herpes, conjunctivitis, dry eye, eye infection or inflammation, eyelid inflammation and glaucoma 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. Steven David Chang billed Medicare for 6,504 services in 2024
CMS data shows 6,504 Medicare services from Dr. Chang across 15 procedure codes in 2024, for 1,608 Medicare patients. Medicare paid $567,652 for them.
Medicare services, 20246,504
Medicare patients1,608
Paid by Medicare$567,652
Procedure codes15
Dr. Chang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 4,3802024: 3,89011%
- Surgery
- 2023: 2,9712024: 2,61412%
Where Dr. Chang's Medicare services took place, 2024
- In an office6,27396%
- In a facility2314%
Dr. Chang compared with the California median for ophthalmologists, 2024
- Dr. Chang
- California median
- Medicare services
- 6,504vs 1,0796.0 times
- Medicare patients
- 1,608vs 4213.8 times
- Part D claims
- 2,106vs 6183.4 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. Steven David Chang treated 1,608 Medicare patients in 2024, average age 78
CMS counts 1,608 Medicare patients who saw Dr. Chang in 2024. The largest group is 75 to 84, with 784 patients. 75% of them have high cholesterol, and 74% have high blood pressure. 7% are also on Medicaid. Their average risk score is 1.12, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chang's median patient age at 72, with 44% women.
Medicare patients, 20241,608
Average age78
Average risk score1.12
Also on Medicaid7%
Dr. Chang's Medicare patients by age, 2024
Dr. Chang's Medicare patients by sex, 2024
- Women1,06166%
- Men54734%
Chronic conditions among Dr. Chang's Medicare patients, 2024
- High cholesterol75%
- High blood pressure74%
- Arthritis49%
- Ischemic heart disease25%
- Osteoporosis24%
- Diabetes23%
- Mood disorders23%
- Depression21%
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 72
Patient panel by sex, all payers
- Women44%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Steven David Chang wrote 2,211 Medicare Part D claims in 2024
In 2024, Dr. Chang wrote 2,211 Medicare Part D claims for 363 patients. 35% of them were for generic drugs. CMS names the drug for 2,106 of them, across 34 drugs with 11 or more claims each, at $512,668 in total drug cost. In 2023, CMS named 1,950 claims across 35 drugs.
Part D claims, 20242,211
Drugs named by CMS34
Total drug cost$512,668
Part D patients363
Dr. Chang's Part D claims by kind of drug, 2024
- Generic777 claims35%
- Brand-name1,434 claims65%
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
- Antibiotics1%19 of 2,211 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: 1,9502024: 2,1068%
Drugs named by CMS: 34 in 2024, 35 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. Steven David Chang scored 21 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 21 out of 100 for Dr. Chang for performance year 2024, reported individually.
Dr. Chang's MIPS scores, performance year 2024
- 21of 100Final score
- 0of 100Quality
- 0of 100Improvement Activities
- 72of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Steven David Chang has 1 publication on record
Dmand AI links 1 paper to Dr. Chang. Dr. Chang's most frequent co-authors are Lisa Ferrigno, MD, David Scott Thoman, MD and Marc Zerey, MD.
Papers1
Dr. Chang's most frequent co-authors
Recent publications by Dr. Chang
See who Dr. Chang researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chang works with, so you can find a warm path to the right ophthalmologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Steven David Chang received $5,517 in industry payments from 2016 to 2025
CMS Open Payments shows 181 general payments to Dr. Chang from 33 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 67% of the total. Intuitive Surgical, Inc. paid the most, $1,600.
General payments to Dr. Chang by program year, 2016 to 2025
General payments to Dr. Chang by kind, 2016 to 2025
$5.5Kin total
- Food and beverage$3,72067%
- Travel and lodging$1,61229%
- Gifts$842%
- Education$751%
- Entertainment$260%
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. Steven David Chang graduated from UCSF School of Medicine
Dr. Chang graduated from UCSF School of Medicine in 1990.
- Medical school
- Board certified in ophthalmology
Source: Dmand AI Professional Profile Data
Dr. Steven David Chang accepts plans from 6 insurance carriers
Dr. Chang is in network with 6 carriers, including Blue Cross Blue Shield of Michigan, Elevance and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- Elevance
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- CMS Medicare
Plan types Dr. Chang accepts, by number of carriers
- Medicare6
- PPO5
- EPO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Steven David 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) |
| 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 | Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Steven David 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. Steven David Chang's NPI number?
Dr. Steven David Chang's NPI number is 1174598239. It was assigned on February 22, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Steven David Chang?
Dr. Steven David Chang is an ophthalmologist in Ventura, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Steven David Chang practice?
Dr. Chang practices at 3160 Telegraph Rd, Ventura, CA 93003. Dr. Chang's primary practice is Community Memorial Hospital San Buenaventura in Ventura, California. Dmand AI also links Dr. Chang to 1 physician office.
What is Dr. Steven David Chang's office phone number?
The practice phone on file for Dr. Chang is (805) 652-5011.
What is Dr. Steven David Chang's medical license number?
Dr. Chang holds California license G79197.
Does Dr. Steven David Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 6,504 services in 2024.
What is Dr. Steven David Chang's MIPS score?
Dr. Chang's MIPS final score for performance year 2024 is 21 out of 100, reported individually.
How many Medicare patients does Dr. Steven David Chang see?
CMS counts 1,608 Medicare patients who saw Dr. Chang in 2024, with an average age of 78.
Is Dr. Steven David Chang board certified?
Yes. Dr. Chang is board certified in ophthalmology by the American Board of Ophthalmology.
What services does Dr. Steven David Chang bill to Medicare?
In 2024, Dr. Chang's most billed Medicare services were eye exam or test (92012), surgery: eye (68761) and eye exam or test (92014).
Show 7 more questionsShow fewer questions
Where did Dr. Steven David Chang go to medical school?
Dr. Chang graduated from UCSF School of Medicine in 1990.
What drugs does Dr. Steven David Chang prescribe most?
In 2024 Medicare Part D data, Dr. Chang's most prescribed drugs by claims were Lumigan, Latanoprost and Vyzulta.
Has Dr. Steven David Chang received payments from drug or device companies?
CMS Open Payments shows $5,517 in general payments to Dr. Chang from 33 companies from 2016 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Steven David Chang been practicing?
Dr. Chang graduated from medical school in 1990, 36 years ago.
Does Dr. Steven David Chang do research?
Dmand AI links 1 publication to Dr. Chang.
Who does Dr. Steven David Chang publish with?
Dr. Chang's most frequent co-authors are Lisa Ferrigno, MD (1 shared paper), David Scott Thoman, MD (1 shared paper) and Marc Zerey, MD (1 shared paper).
What insurance does Dr. Steven David Chang accept?
Dr. Chang is in network with 6 carriers, including Blue Cross Blue Shield of Michigan, Elevance and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
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