Dr. Daniel W. Chang, MD
- Medicare services, 2024
- 1,160
- Medicare patients, 2024
- 594
- Part D claims, 2024
- 9,336
- MIPS score, 2024
- 100
- Industry payments
- $14,447
- Practice address
- 500 South Virgil Avenue, Suite 301, Los Angeles, CA 90020
- Practice phone
- Call (213) 738-6090
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Virgil Endoscopy Center
Surgery Center - Medicare-Certified · Los Angeles, 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. Daniel W. Chang is a neurologist in Los Angeles, California
Dr. Chang practices at Virgil Endoscopy Center in Los Angeles, California.
Dr. Chang's NPI, 1194761841, was assigned on June 21, 2006. Dr. Chang graduated from Keck School of Medicine of USC in 1994. Dr. Chang holds California license A61662.
- NPI
- 1194761841NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5698733988
- NPI enumeration date
- June 21, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (213) 738-6090
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Daniel W. Chang practices at Virgil Endoscopy Center in Los Angeles, California
Dr. Chang's primary practice is Virgil Endoscopy Center, at 500 South Virgil Avenue, Suite 301, Los Angeles, CA 90020. The practice phone is (213) 738-6090.
- Virgil Endoscopy Center500 South Virgil Avenue, Suite 301, Los Angeles, CA 90020Phone(213) 738-6090
Source: Dmand AI Affiliation Data
Dr. Daniel W. Chang is affiliated with 1 site of care and 1 medical group
Dr. Chang's primary practice is Virgil Endoscopy Center in Los Angeles, California. The medical group on file is Optum - Downtown Los Angeles.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Daniel W. 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 |
|---|---|
| Virgil Endoscopy Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Daniel W. Chang is one of 2,207 neurologists in California
Neurology is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dr. Chang is licensed in California.
Specialties and state licenses
- Neurology, CaliforniaPrimary
Clinical focus
Dmand AI lists alzheimer's disease, cerebrovascular disease, epilepsy, essential tremor, fibromyalgia and chronic pain, head injury, lower back pain and migraine and chronic headache among the conditions Dr. Chang treats.
Neurologists near Dr. Chang
Counts of neurologists 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 W. Chang billed Medicare for 1,160 services in 2024
CMS data shows 1,160 Medicare services from Dr. Chang across 4 procedure codes in 2024, for 594 Medicare patients. Medicare paid $204,283 for them. Every service was in an office.
Dr. Chang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 8992024: 8723%
- Tests and treatments
- 2023: 2082024: 28838%
Dr. Chang compared with the California median for neurologists, 2024
- Dr. Chang
- California median
- Medicare services
- 1,160vs 4042.9 times
- Medicare patients
- 594vs 1903.1 times
- Part D claims
- 9,127vs 32428.2 times
Medians across 1,995 neurologists 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 neurologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Daniel W. Chang treated 594 Medicare patients in 2024, average age 77
CMS counts 594 Medicare patients who saw Dr. Chang in 2024. The largest group is 75 to 84, with 256 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 84% are also on Medicaid. Their average risk score is 1.78, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Chang's median patient age at 74, with 60% women.
Dr. Chang's Medicare patients by age, 2024
Dr. Chang's Medicare patients by sex, 2024
- Women40668%
- Men18832%
Chronic conditions among Dr. Chang's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis67%
- Diabetes66%
- Alzheimer's and dementia37%
- Osteoporosis36%
- Mood disorders35%
- Depression32%
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
- Women60%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Daniel W. Chang wrote 9,336 Medicare Part D claims in 2024
In 2024, Dr. Chang wrote 9,336 Medicare Part D claims for 1,216 patients. 95% of them were for generic drugs. CMS names the drug for 9,127 of them, across 63 drugs with 11 or more claims each, at $991,637 in total drug cost. In 2023, CMS named 8,855 claims across 67 drugs.
Dr. Chang's Part D claims by kind of drug, 2024
- Generic8,898 claims95%
- Brand-name421 claims5%
- Other17 claims0%
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
- Opioids0%16 of 9,336 claims
- Antipsychotics, patients 65 and over2%194 of 9,336 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: 8,8552024: 9,1273%
Drugs named by CMS: 63 in 2024, 67 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 W. Chang scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Chang for performance year 2024, reported individually. Dr. Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Chang's MIPS scores, performance year 2024
- 100of 100Final score
- 96.3of 100Quality
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Daniel W. Chang received $14,447 in industry payments from 2016 to 2025
CMS Open Payments shows 261 general payments to Dr. Chang from 31 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 43% of the total. Abbvie Inc. paid the most, $5,557.
General payments to Dr. Chang by program year, 2016 to 2025
General payments to Dr. Chang by kind, 2016 to 2025
- Food and beverage$6,26143%
- Speaker and faculty fees$6,09242%
- Travel and lodging$2,02614%
- Education$680%
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 W. Chang has 1 award and honors on record
Dmand AI lists 1 award for Dr. Chang, most recently CMS Stage 1 EHR in 2014.
Awards and honors for Dr. Chang
- 2014
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Daniel W. Chang graduated from Keck School of Medicine of USC
Dr. Chang graduated from Keck School of Medicine of USC in 1994.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Daniel W. Chang accepts plans from 14 insurance carriers
Dr. Chang is in network with 14 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Humana
- Regence Health Plans
- +6 more carriersWith a free account
Plan types Dr. Chang accepts, by number of carriers
- PPO10
- Medicare8
- HMO6
- EPO3
- POS3
Source: Dmand AI Insurance Network Data
Sources for Dr. Daniel W. 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) |
| 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. Daniel W. 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 W. Chang's NPI number?
Dr. Daniel W. Chang's NPI number is 1194761841. It was assigned on June 21, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Daniel W. Chang?
Dr. Daniel W. Chang is a neurologist in Los Angeles, California. The primary specialty in the NPI Registry is Neurology Physician (taxonomy code 2084N0400X).
Where does Dr. Daniel W. Chang practice?
Dr. Chang practices at 500 South Virgil Avenue, Suite 301, Los Angeles, CA 90020. Dr. Chang's primary practice is Virgil Endoscopy Center in Los Angeles, California.
What is Dr. Daniel W. Chang's office phone number?
The practice phone on file for Dr. Chang is (213) 738-6090.
What is Dr. Daniel W. Chang's medical license number?
Dr. Chang holds California license A61662.
What medical group is Dr. Daniel W. Chang part of?
Dr. Chang is linked to Optum - Downtown Los Angeles.
Does Dr. Daniel W. Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 1,160 services in 2024, and Dr. Chang accepts Medicare assignment.
What is Dr. Daniel W. Chang's MIPS score?
Dr. Chang's MIPS final score for performance year 2024 is 100 out of 100, reported individually.
How many Medicare patients does Dr. Daniel W. Chang see?
CMS counts 594 Medicare patients who saw Dr. Chang in 2024, with an average age of 77.
What services does Dr. Daniel W. Chang bill to Medicare?
In 2024, Dr. Chang's most billed Medicare services were office visit, established patient (99214), office visit, new patient (99204) and nerve and brain test (95816).
Show 5 more questionsShow fewer questions
Where did Dr. Daniel W. Chang go to medical school?
Dr. Chang graduated from Keck School of Medicine of USC in 1994.
What drugs does Dr. Daniel W. Chang prescribe most?
In 2024 Medicare Part D data, Dr. Chang's most prescribed drugs by claims were Memantine HCl ER, Donepezil HCl and Carbidopa-Levodopa.
Has Dr. Daniel W. Chang received payments from drug or device companies?
CMS Open Payments shows $14,447 in general payments to Dr. Chang from 31 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Daniel W. Chang been practicing?
Dr. Chang graduated from medical school in 1994, 32 years ago.
What insurance does Dr. Daniel W. Chang accept?
Dr. Chang is in network with 14 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
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