Int J Radiat Oncol Biol Phys
Dr. Eric Cheng Kun Chang, MD
- Medicare services, 2024
- 6,344
- Medicare patients, 2024
- 302
- Part D claims, 2024
- 1,145
- Publications
- 111
- MIPS score, 2024
- 75
- Practice address
- 438 W Las Tunas Drive, San Gabriel, CA 91776
- Practice phone
- Call (626) 289-5454
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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. Eric Cheng Kun Chang is a medical oncologist in San Gabriel, California
Dr. Chang practices at AHMC San Gabriel Valley Medical Center in San Gabriel, California, part of AHMC Healthcare.
Dr. Chang's NPI, 1427123488, was assigned on November 22, 2006. Dr. Chang graduated from Albert Einstein College of Medicine in 1989. Dr. Chang's California license number on file is G74401.
- NPI
- 1427123488NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6305039595
- NPI enumeration date
- November 22, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (626) 289-5454
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 63
- Medical school graduation
- 1989
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Eric Cheng Kun Chang practices at AHMC San Gabriel Valley Medical Center in San Gabriel, California
Dr. Chang's primary practice is AHMC San Gabriel Valley Medical Center, at 438 W Las Tunas Drive, San Gabriel, CA 91776 in Los Angeles County. The practice phone is (626) 289-5454.
- AHMC San Gabriel Valley Medical Center438 W Las Tunas Drive, San Gabriel, CA 91776 · Los Angeles CountyPhone(626) 289-5454
Source: Dmand AI Affiliation Data
Dr. Eric Cheng Kun Chang is affiliated with 5 sites of care
Dr. Chang's primary practice is AHMC San Gabriel Valley Medical Center in San Gabriel, California, part of AHMC Healthcare. Dr. Chang is also affiliated with Emanate Health Inter-Community Hospital. Dmand AI also links Dr. Chang to 3 more hospitals, 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. Eric Cheng Kun 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 |
|---|---|
| AHMC San Gabriel Valley Medical Center | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Eric Cheng Kun Chang is one of 415 medical oncologists in California
Medical oncology is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207RX0202X. Dr. Chang is board certified in hematology by the American Board of Internal Medicine. Dr. Chang has a license on file in California.
Specialties and state licenses
- Medical oncology, CaliforniaPrimary
Clinical focus
Dmand AI lists chronic anemia, lung cancer, neutropenia and purpura and thrombocytopenia among the conditions Dr. Chang treats.
Medical oncologists near Dr. Chang
Counts of medical oncologists 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. Eric Cheng Kun Chang billed Medicare for 6,344 services in 2024
CMS data shows 6,344 Medicare services from Dr. Chang across 15 procedure codes in 2024, for 302 Medicare patients. Medicare paid $441,588 for them.
Dr. Chang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4,9262024: 5,96721%
- Tests and treatments
- 2023: 2312024: 17524%
- Drugs given in the office
- 2023: 1522024: 11922%
- Surgery
- 2023: 882024: 7119%
- Other services
- 2023: 02024: 12
Where Dr. Chang's Medicare services took place, 2024
- In an office93915%
- In a facility5,40585%
Dr. Chang compared with the California median for medical oncologists, 2024
- Dr. Chang
- California median
- Medicare services
- 6,344vs 49612.8 times
- Medicare patients
- 302vs 15496% above
- Part D claims
- 681vs 1444.7 times
Medians across 358 medical oncologists 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 medical oncologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Eric Cheng Kun Chang treated 302 Medicare patients in 2024, average age 79
CMS counts 302 Medicare patients who saw Dr. Chang in 2024. The largest group is 85 and over, with 97 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 82% are also on Medicaid. Their average risk score is 3.96, 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 69, with 54% women.
Dr. Chang's Medicare patients by age, 2024
Dr. Chang's Medicare patients by sex, 2024
- Women16956%
- Men13344%
Chronic conditions among Dr. Chang's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease66%
- Diabetes62%
- Ischemic heart disease62%
- Heart failure60%
- Alzheimer's and dementia59%
- Arthritis56%
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 69
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. Eric Cheng Kun Chang wrote 1,145 Medicare Part D claims in 2024
In 2024, Dr. Chang wrote 1,145 Medicare Part D claims for 67 patients. 84% of them were for generic drugs. CMS names the drug for 681 of them, across 33 drugs with 11 or more claims each, at $226,658 in total drug cost. In 2023, CMS named 605 claims across 29 drugs.
Dr. Chang's Part D claims by kind of drug, 2024
- Generic958 claims84%
- Brand-name and other187 claims16%
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
- Opioids2%19 of 1,145 claims
- Antibiotics5%53 of 1,145 claims
- Antipsychotics, patients 65 and over1%16 of 1,145 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: 6052024: 68113%
Drugs named by CMS: 33 in 2024, 29 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. Eric Cheng Kun 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 individually. Dr. Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
- MIPS final score, 2024
- 75 of 100
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. Eric Cheng Kun Chang has 111 publications on record
Dmand AI links 111 papers to Dr. Chang, published from 2007 to 2021. 2012 was the busiest year, with 6. The most frequent topics are Radiosurgery, Brain Neoplasms and Spinal Neoplasms. Dr. Chang has published most often in Int J Radiat Oncol Biol Phys. Dr. Chang's most frequent co-authors are Moshe H. Maor, MD, Eric Lin Chang, MD and Behrang Amini, MD, PhD.
Dr. Chang's papers by year, 2012 to 2021
Topics Dr. Chang writes about most
- Radiosurgery
- Brain Neoplasms
- Spinal Neoplasms
- Radiotherapy Dosage
- Radiotherapy Planning, Computer-Assisted
- Cranial Irradiation
- Radiation Injuries
- Radiotherapy, Intensity-Modulated
Dr. Chang's most frequent co-authors
- Moshe H. Maor, MD10 shared papers
- Eric Lin Chang, MD7 shared papers
- Behrang Amini, MD, PhD5 shared papers
Recent publications by Dr. Chang
Radiotherapy to the brain: what are the consequences of this age-old treatment? (opens in a new tab)
Ann Palliat Med
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 medical oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Eric Cheng Kun Chang received $813 in industry payments from 2016 to 2024
CMS Open Payments shows 12 general payments to Dr. Chang from 9 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 78% of the total. RefleXion Medical, Inc. paid the most, $238.
General payments to Dr. Chang by program year, 2016 to 2024
General payments to Dr. Chang by kind, 2016 to 2024
- Food and beverage$63378%
- Education$18022%
Companies that paid Dr. Chang the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Eric Cheng Kun Chang graduated from Albert Einstein College of Medicine
Dr. Chang graduated from Albert Einstein College of Medicine in 1989.
- Medical school
- Board certified in hematology
- Board certified in internal medicine
- Board certified in medical oncology
Source: Dmand AI Professional Profile Data
Dr. Eric Cheng Kun Chang accepts plans from 12 insurance carriers
Dr. Chang is in network with 12 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- Alliant Health Plans
- +4 more carriersWith a free account
Plan types Dr. Chang accepts, by number of carriers
- Medicare8
- PPO8
- HMO5
- POS5
- EPO3
Source: Dmand AI Insurance Network Data
Sources for Dr. Eric Cheng Kun 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) |
| 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. Eric Cheng Kun 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. Eric Cheng Kun Chang's NPI number?
Dr. Eric Cheng Kun Chang's NPI number is 1427123488. It was assigned on November 22, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Eric Cheng Kun Chang?
Dr. Eric Cheng Kun Chang is a medical oncologist in San Gabriel, California. The primary specialty in the NPI Registry is Medical Oncology Physician (taxonomy code 207RX0202X).
Where does Dr. Eric Cheng Kun Chang practice?
Dr. Chang practices at 438 W Las Tunas Drive, San Gabriel, CA 91776. Dr. Chang's primary practice is AHMC San Gabriel Valley Medical Center in San Gabriel, California, part of AHMC Healthcare. Dmand AI also links Dr. Chang to 3 hospitals.
What is Dr. Eric Cheng Kun Chang's office phone number?
The practice phone on file for Dr. Chang is (626) 289-5454.
What is Dr. Eric Cheng Kun Chang's medical license number?
Dr. Chang's California license number on file is G74401.
Which hospitals is Dr. Eric Cheng Kun Chang affiliated with?
Dr. Chang practices at AHMC San Gabriel Valley Medical Center in San Gabriel, California. Dr. Chang is also affiliated with Emanate Health Inter-Community Hospital. Dmand AI links Dr. Chang to 3 more hospitals.
Does Dr. Eric Cheng Kun Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 6,344 services in 2024, and Dr. Chang accepts Medicare assignment.
What is Dr. Eric Cheng Kun Chang's MIPS score?
Dr. Chang's MIPS final score for performance year 2024 is 75 out of 100, reported individually.
How many Medicare patients does Dr. Eric Cheng Kun Chang see?
CMS counts 302 Medicare patients who saw Dr. Chang in 2024, with an average age of 79.
Is Dr. Eric Cheng Kun Chang board certified?
Yes. Dr. Chang is board certified in hematology by the American Board of Internal Medicine.
Show 8 more questionsShow fewer questions
What services does Dr. Eric Cheng Kun Chang bill to Medicare?
In 2024, Dr. Chang's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99233) and nursing facility care (99309).
Where did Dr. Eric Cheng Kun Chang go to medical school?
Dr. Chang graduated from Albert Einstein College of Medicine in 1989.
What drugs does Dr. Eric Cheng Kun Chang prescribe most?
In 2024 Medicare Part D data, Dr. Chang's most prescribed drugs by claims were Eliquis, Amlodipine Besylate and Atorvastatin Calcium.
Has Dr. Eric Cheng Kun Chang received payments from drug or device companies?
CMS Open Payments shows $813 in general payments to Dr. Chang from 9 companies from 2016 to 2024. The largest total came from RefleXion Medical, Inc.
How long has Dr. Eric Cheng Kun Chang been practicing?
Dr. Chang graduated from medical school in 1989, 37 years ago.
Does Dr. Eric Cheng Kun Chang do research?
Dmand AI links 111 publications to Dr. Chang, published from 2007 to 2021.
Who does Dr. Eric Cheng Kun Chang publish with?
Dr. Chang's most frequent co-authors are Moshe H. Maor, MD (10 shared papers), Eric Lin Chang, MD (7 shared papers) and Behrang Amini, MD, PhD (5 shared papers).
What insurance does Dr. Eric Cheng Kun Chang accept?
Dr. Chang is in network with 12 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
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