Dr. Daniel H. Chang, MD
- Medicare services, 2024
- 1,569
- Medicare patients, 2024
- 470
- Part D claims, 2024
- 81
- Publications
- 16
- MIPS score, 2024
- 75
- Practice address
- 4101 Empire Drive, Suite 130, Bakersfield, CA 93309
- Practice phone
- Call (661) 325-1900
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Empire Surgery Center
Surgery Center - Medicare-Certified · Bakersfield, California
Find Dr. Chang's professional email, personal email and mobile number
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Dr. Daniel H. Chang is an ophthalmologist in Bakersfield, California
Dr. Chang practices at Empire Surgery Center in Bakersfield, California.
Dr. Chang's NPI, 1184618266, was assigned on September 6, 2005. Dr. Chang graduated from Duke University School Of Medicine in 2000. Dr. Chang holds California license A102116.
- NPI
- 1184618266NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3476443706
- NPI enumeration date
- September 6, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (661) 325-1900
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Daniel H. Chang practices at Empire Surgery Center in Bakersfield, California
Dr. Chang's primary practice is Empire Surgery Center, at 4101 Empire Drive, Suite 130, Bakersfield, CA 93309. The practice phone is (661) 325-1900.
- Empire Surgery Center4101 Empire Drive, Suite 130, Bakersfield, CA 93309Phone(661) 325-1900
Source: Dmand AI Affiliation Data
Dr. Daniel H. Chang is affiliated with 5 sites of care and 4 medical groups
Dr. Chang's primary practice is Empire Surgery Center in Bakersfield, California. Dr. Chang is also affiliated with Adventist Health Bakersfield. Dmand AI also links Dr. Chang to 1 more hospital, 4 medical groups and 2 group practices and clinics, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Daniel H. Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Empire Surgery Center | Available with a free account |
| +4 more sites and 4 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Daniel H. 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 3 states: California, Arizona and Minnesota.
Specialties and state licenses
- Ophthalmology, CaliforniaPrimary
- Arizona license
- Minnesota license
Clinical focus
Dmand AI lists cataract, cataract surgery with lens implant, eye infection or inflammation, glaucoma, hereditary corneal conditions and secondary membranaous cataract surgery 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. Daniel H. Chang billed Medicare for 1,569 services in 2024
CMS data shows 1,569 Medicare services from Dr. Chang across 8 procedure codes in 2024, for 470 Medicare patients. Medicare paid $247,340 for them.
Dr. Chang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 5792024: 64011%
- Surgery
- 2023: 5172024: 5262%
- Office and hospital visits
- 2023: 3242024: 40324%
Where Dr. Chang's Medicare services took place, 2024
- In an office1,04366%
- In a facility52634%
Dr. Chang compared with the California median for ophthalmologists, 2024
- Dr. Chang
- California median
- Medicare services
- 1,569vs 1,07945% above
- Medicare patients
- 470vs 42112% above
- Part D claims
- 57vs 61891% below
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. Daniel H. Chang treated 470 Medicare patients in 2024, average age 74
CMS counts 470 Medicare patients who saw Dr. Chang in 2024. The largest group is 65 to 74, with 242 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 9% 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 74, with 56% women.
Dr. Chang's Medicare patients by age, 2024
Dr. Chang's Medicare patients by sex, 2024
- Women27458%
- Men19642%
Chronic conditions among Dr. Chang's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis42%
- Diabetes34%
- Ischemic heart disease33%
- Anxiety18%
- Cancer18%
- COPD17%
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 74
Patient panel by sex, all payers
- Women56%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Daniel H. Chang wrote 81 Medicare Part D claims in 2024
In 2024, Dr. Chang wrote 81 Medicare Part D claims for 41 patients. 41% of them were for generic drugs. CMS names the drug for 57 of them, across 2 drugs with 11 or more claims each, at $1,953 in total drug cost. In 2023, CMS named 79 claims across 3 drugs.
Dr. Chang's Part D claims by kind of drug, 2024
- Generic33 claims41%
- Brand-name48 claims59%
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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 792024: 5728%
Drugs named by CMS: 2 in 2024, 3 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. Daniel H. Chang scored 75 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Dr. Chang for performance year 2024, reported as part of a group. Dr. Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 549 procedures of cataract surgery by Dr. Chang, more than 96% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- MIPS final score, 2024
- 75 of 100
Where Dr. Chang ranks in Medicare procedure volume
- Cataract surgery
- 96th percentile549 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Daniel H. Chang has 16 publications on record
Dmand AI links 16 papers to Dr. Chang, published from 2023 to 2024. The most frequent topics are Lenses, Intraocular and Presbyopia. Dr. Chang has published most often in Ophthalmol Ther. Dr. Chang's most frequent co-authors are Thomas E. Clinch, MD, Andrew Allen Kao, MD and Robert Paul Lehmann, MD.
Topics Dr. Chang writes about most
- Lenses, Intraocular
- Presbyopia
Dr. Chang's most frequent co-authors
- Thomas E. Clinch, MD1 shared paper
- Andrew Allen Kao, MD1 shared paper
- Robert Paul Lehmann, MD1 shared paper
Recent publications by Dr. Chang
J Cataract Refract Surg
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. Daniel H. Chang received $1,314,301 in industry payments from 2016 to 2025
CMS Open Payments shows 998 general payments to Dr. Chang from 32 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 78% of the total. Johnson & Johnson Surgical Vision, Inc. paid the most, $927,177.
General payments to Dr. Chang by program year, 2016 to 2025
General payments to Dr. Chang by kind, 2016 to 2025
- Consulting fees$1,027,36078%
- Speaker and faculty fees$145,39711%
- Travel and lodging$78,2606%
- Education speaker fees$35,7003%
- Other$27,4832%
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. Daniel H. Chang graduated from Duke University School Of Medicine
Dr. Chang graduated from Duke University School Of Medicine in 2000.
- Medical school
- Board certified in ophthalmology
Source: Dmand AI Professional Profile Data
Dr. Daniel H. Chang accepts plans from 19 insurance carriers
Dr. Chang is in network with 19 carriers, including Aetna, Elevance and Excellus BlueCross BlueShield. HMO plans come from the most carriers, 12. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Excellus BlueCross BlueShield
- Blue Cross Blue Shield of Michigan
- HCSC
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- Humana
- +11 more carriersWith a free account
Plan types Dr. Chang accepts, by number of carriers
- HMO12
- PPO12
- Medicare10
- POS8
- EPO4
Source: Dmand AI Insurance Network Data
Sources for Dr. Daniel H. 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 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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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. Daniel H. 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. Daniel H. Chang's NPI number?
Dr. Daniel H. Chang's NPI number is 1184618266. It was assigned on September 6, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Daniel H. Chang?
Dr. Daniel H. Chang is an ophthalmologist in Bakersfield, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Daniel H. Chang practice?
Dr. Chang practices at 4101 Empire Drive, Suite 130, Bakersfield, CA 93309. Dr. Chang's primary practice is Empire Surgery Center in Bakersfield, California. Dmand AI also links Dr. Chang to 1 hospital, 4 medical groups and 2 group practices and clinics.
What is Dr. Daniel H. Chang's office phone number?
The practice phone on file for Dr. Chang is (661) 325-1900.
What is Dr. Daniel H. Chang's medical license number?
Dr. Chang holds California license A102116, one of the licenses on file in 3 states.
Which states has Dr. Daniel H. Chang been licensed in?
Dmand AI has state licenses on file for Dr. Chang in California (2007 to 2027), Arizona (2005 to 2009) and Minnesota (2004 to 2006).
Which hospitals is Dr. Daniel H. Chang affiliated with?
Dr. Chang is affiliated with Adventist Health Bakersfield. Dmand AI links Dr. Chang to 1 more hospital.
Does Dr. Daniel H. Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 1,569 services in 2024, and Dr. Chang accepts Medicare assignment.
What is Dr. Daniel H. Chang's MIPS score?
Dr. Chang's MIPS final score for performance year 2024 is 75 out of 100, reported as part of a group.
How many Medicare patients does Dr. Daniel H. Chang see?
CMS counts 470 Medicare patients who saw Dr. Chang in 2024, with an average age of 74.
Show 9 more questionsShow fewer questions
Is Dr. Daniel H. Chang board certified?
Yes. Dr. Chang is board certified in ophthalmology by the American Board of Ophthalmology.
What services does Dr. Daniel H. Chang bill to Medicare?
In 2024, Dr. Chang's most billed Medicare services were eye exam or test (92136), surgery: eye (66984) and office visit, established patient (99214).
Where did Dr. Daniel H. Chang go to medical school?
Dr. Chang graduated from Duke University School Of Medicine in 2000.
What drugs does Dr. Daniel H. Chang prescribe most?
In 2024 Medicare Part D data, Dr. Chang's most prescribed drugs by claims were Prednisolone Acetate and Ofloxacin.
Has Dr. Daniel H. Chang received payments from drug or device companies?
CMS Open Payments shows $1,314,301 in general payments to Dr. Chang from 32 companies from 2016 to 2025. The largest total came from Johnson & Johnson Surgical Vision, Inc.
How long has Dr. Daniel H. Chang been practicing?
Dr. Chang graduated from medical school in 2000, 26 years ago.
Does Dr. Daniel H. Chang do research?
Dmand AI links 16 publications to Dr. Chang, published from 2023 to 2024.
Who does Dr. Daniel H. Chang publish with?
Dr. Chang's most frequent co-authors are Thomas E. Clinch, MD (1 shared paper), Andrew Allen Kao, MD (1 shared paper) and Robert Paul Lehmann, MD (1 shared paper).
What insurance does Dr. Daniel H. Chang accept?
Dr. Chang is in network with 19 carriers, including Aetna, Elevance and Excellus BlueCross BlueShield. HMO plans come from the most carriers, 12. Check the plan with the practice before a visit.
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