Dr. Stephen S. Chang, MD
- Medicare services, 2019
- 139
- Part D claims, 2020
- 15
- Industry payments
- $398
- Insurance carriers
- 4
- State licenses
- 2
- Practice address
- 115 Mall Dr, Hanford, CA 93230
- Practice phone
- Call (818) 956-1010
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Chang's professional email, personal email and mobile number
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Dr. Stephen S. Chang is an ophthalmologist in Hanford, California
Dr. Chang practices in Hanford, California.
Dr. Chang's NPI, 1346226081, was assigned on December 15, 2005. Dr. Chang graduated from Loma Linda University School Of Medicine in 1970. Dr. Chang's California license number on file is G20756.
- NPI
- 1346226081NPI Registry (opens in a new tab)
- NPI enumeration date
- December 15, 2005
- NPI status
- Active
- Practice phone
- (818) 956-1010
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1970
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Stephen S. Chang's practice address is in Hanford, California
Dr. Chang's practice address in the NPI Registry is 115 Mall Dr, Hanford, CA 93230, in Kings County. The practice phone is (818) 956-1010.
- NPI Registry address115 Mall Dr, Hanford, CA 93230 · Kings CountyPhone(818) 956-1010
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Stephen S. 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 |
|---|---|
| Dr. Chang's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Stephen S. 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 2 states: California and Hawaii.
Specialties and state licenses
- Ophthalmology, CaliforniaPrimary
- Hawaii license
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. Stephen S. Chang billed Medicare for 139 services in 2019
CMS data shows 139 Medicare services from Dr. Chang across 2 procedure codes in 2019. Medicare paid $8,676 for them. Every service was in an office.
Dr. Chang's Medicare services by type, 2018 to 2019
- 2018
- 2019
- Tests and treatments
- 2018: 4962019: 13972%
- Surgery
- 2018: 462019: 0100%
- Office and hospital visits
- 2018: 672019: 0100%
Dr. Chang compared with the California median for ophthalmologists, 2019
- Dr. Chang
- California median
- Medicare services
- 139vs 1,07987% below
- Part D claims
- 15vs 61898% below
Medians across 2,568 ophthalmologists in California with Dmand AI profiles that report each measure.
Dr. Chang's most billed Medicare procedure codes, 2019
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. Stephen S. Chang's patients have a median age of 73
Across all payers, Dmand AI patient panel data puts Dr. Chang's median patient age at 73, with 100% women.
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 73
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Stephen S. Chang wrote 15 Medicare Part D claims in 2020
In 2020, Dr. Chang wrote 15 Medicare Part D claims. They cover 1 drug, with $10,072 in total drug cost. In 2019, CMS named 122 claims across 6 drugs.
Dr. Chang's most prescribed drugs by claims, 2020
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2019 to 2020
- 2019
- 2020
- Claims for drugs CMS names
- 2019: 1222020: 1588%
Drugs named by CMS: 1 in 2020, 6 in 2019.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Stephen S. Chang received $398 in industry payments from 2016 to 2019
CMS Open Payments shows 9 general payments to Dr. Chang from 5 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 100% of the total. Alcon Laboratories Inc paid the most, $323.
General payments to Dr. Chang by program year, 2016 to 2019
Companies that paid Dr. Chang the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Stephen S. Chang has 3 awards and honors on record
Dmand AI lists 3 awards for Dr. Chang, most recently CMS Stage 1 EHR in 2014.
Awards and honors for Dr. Chang
- 2014
- CMS Stage 1 EHR
- 2013
- Top Doctors:LA Area
- Undated
- AAO Fellow
Source: Dmand AI Professional Profile Data
Dr. Stephen S. Chang graduated from Loma Linda University School Of Medicine
Dr. Chang graduated from Loma Linda University School Of Medicine in 1970. Dr. Chang is a member of AAO.
- Medical school
- Board certified in ophthalmology
Source: Dmand AI Professional Profile Data
Dr. Stephen S. Chang accepts plans from 4 insurance carriers
Dr. Chang is in network with 4 carriers, including Elevance, Humana and Blue Cross Blue Shield of Massachusetts. PPO plans come from the most carriers, 4. Check the plan with the practice before a visit.
- Elevance
- Humana
- Blue Cross Blue Shield of Massachusetts
- HCSC
Plan types Dr. Chang accepts, by number of carriers
- PPO4
- Medicare3
- HMO2
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Stephen S. 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 |
| 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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. Stephen S. 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. Stephen S. Chang's NPI number?
Dr. Stephen S. Chang's NPI number is 1346226081. It was assigned on December 15, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Stephen S. Chang?
Dr. Stephen S. Chang is an ophthalmologist in Hanford, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Stephen S. Chang practice?
Dr. Chang practices at 115 Mall Dr, Hanford, CA 93230.
What is Dr. Stephen S. Chang's office phone number?
The practice phone on file for Dr. Chang is (818) 956-1010.
What is Dr. Stephen S. Chang's medical license number?
Dr. Chang's California license number on file is G20756, one of the licenses on file in 2 states.
Which states has Dr. Stephen S. Chang been licensed in?
Dmand AI has state licenses on file for Dr. Chang in California (1971 to 2024) and Hawaii (1973 to 2020).
Does Dr. Stephen S. Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 139 services in 2019.
Is Dr. Stephen S. Chang board certified?
Yes. Dr. Chang is board certified in ophthalmology by the American Board of Ophthalmology.
What services does Dr. Stephen S. Chang bill to Medicare?
In 2019, Dr. Chang's most billed Medicare services were eye exam or test (92014) and eye exam or test (92012).
Where did Dr. Stephen S. Chang go to medical school?
Dr. Chang graduated from Loma Linda University School Of Medicine in 1970.
Show 4 more questionsShow fewer questions
What drugs does Dr. Stephen S. Chang prescribe most?
In 2020 Medicare Part D data, Dr. Chang's most prescribed drugs by claims were Restasis.
Has Dr. Stephen S. Chang received payments from drug or device companies?
CMS Open Payments shows $398 in general payments to Dr. Chang from 5 companies from 2016 to 2019. The largest total came from Alcon Laboratories Inc.
How long has Dr. Stephen S. Chang been practicing?
Dr. Chang graduated from medical school in 1970, 56 years ago.
What insurance does Dr. Stephen S. Chang accept?
Dr. Chang is in network with 4 carriers, including Elevance, Humana and Blue Cross Blue Shield of Massachusetts. PPO plans come from the most carriers, 4. Check the plan with the practice before a visit.
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