Dr. Eric Cheng Kun Chang, MD

  • San Gabriel, CA
  • Medical oncologist
NPI1427123488PAC ID6305039595
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
Social profiles

Primary practice

AHMC San Gabriel Valley Medical Center

Hospital · San Gabriel, California

See all 5 affiliations

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.

View contacts for free

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 and contact details
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.

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.

See all 5 affiliations for Dr. Chang

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.

EHR by site
SiteEHR vendor and product
AHMC San Gabriel Valley Medical CenterAvailable with a free account
+4 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

See the EHR and IT leaders at every hospital where Dr. Chang practices

Dmand AI maps EHR vendors, IT decision makers and buying committees across AHMC Healthcare and 6.2K+ hospitals, with verified contacts in the same login.

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, CaliforniaPrimaryLicense G74401 · 1992 to 2025 · taxonomy 207RX0202X

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.

Medicare services, 20246,344
Medicare patients302
Paid by Medicare$441,588
Procedure codes15

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.

See all procedures by Dr. Chang

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.

Book a meeting

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.

Medicare patients, 2024302
Average age79
Average risk score3.96
Also on Medicaid82%

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

  1. High blood pressure75%
  2. High cholesterol75%
  3. Chronic kidney disease66%
  4. Diabetes62%
  5. Ischemic heart disease62%
  6. Heart failure60%
  7. Alzheimer's and dementia59%
  8. 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.

Part D claims, 20241,145
Drugs named by CMS33
Total drug cost$226,658
Part D patients67

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.

See all prescribing by Dr. Chang

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

For MedTech and pharma teams

Find medical oncologists like Dr. Chang by procedure volume and prescribing

Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.

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.

Papers111
Years published2007 to 2021

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

Recent publications by Dr. Chang

See all 111 publications and co-authors

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.

How network discovery works

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

$813in total
  • 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.

See all payments to Dr. Chang

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.

  1. Medical schoolAlbert Einstein College of Medicine
  2. Board certified in hematologyAmerican Board of Internal Medicine
  3. Board certified in internal medicineAmerican Board of Internal Medicine
  4. Board certified in medical oncologyAmerican Board of Internal Medicine

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

  1. Medicare8
  2. PPO8
  3. HMO5
  4. POS5
  5. EPO3

Source: Dmand AI Insurance Network Data

Sources for Dr. Eric Cheng Kun Chang's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors 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-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand 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.

Selling to medical oncology practices?

See medical oncologists in California by site of care and group

Find the practices, groups and hospitals they work with, and the right people to contact at each.

  • 30 days free
  • Self-serve
  • No credit card

Cookie settings

Turn each category on or off. Your choice is kept for 12 months and you can change it here at any time.

Necessary

Always on. Sign-in, security, downloads you asked for, your cookie choice, and the page that led to a signup.

View cookies (6)
  • dm_consentDmand AI. Your cookie choices and whether your browser sent a Global Privacy Control signal. 12 months.
  • dm_ft, dm_ltDmand AI. The first and the latest page you arrived on, with the date, so a signup is credited to the page that worked. 90 days, 30 days.
  • dm_fs, dm_lsDmand AI. The first and the latest source of a visit (a search engine, a campaign or the site that linked here). 90 days, 30 days.
  • dm_dl, dm_dl_okDmand AI. After you give an email address for a download, lets you download files without being asked again. 30 days.
  • Session and CSRF cookiesDmand AI (app.dmand.ai). Sign-in and form protection in the application. Session.
  • __cf_bm, cf_clearanceCloudflare. Tells people from automated traffic and keeps the site available. 30 minutes; cf_clearance while a security check is valid.

Analytics

On unless you turn it off. How pages are used, in aggregate, and recordings of how pages are used.

View cookies (6)
  • Google Tag ManagerGoogle. Loads the analytics and marketing tags that are on. Sets no cookie of its own and does not load when both categories are off. n/a.
  • _ga, _ga_<container-id>Google Analytics 4. Visits and page views in aggregate on dmand.ai. 2 years.
  • _clck, _clskMicrosoft Clarity. Recordings and heatmaps of how pages are used, with form fields masked. 1 year, 1 day.
  • CLID, MUID, ANONCHK, MR, SMMicrosoft (clarity.ms). Set by Microsoft when Clarity loads, to recognize a browser across sites that use Clarity. Up to 1 year.
  • None (cookieless)Ahrefs Analytics. Page views in aggregate. n/a.
  • ph_<project>_posthogPostHog. Product usage, errors and performance in app.dmand.ai, used to fix bugs and improve features. 365 days.

Marketing

On unless you turn it off, and always off when your browser sends a Global Privacy Control signal. A visitor identification service tells our sales team which companies and people visit.

View cookies (6)
  • _reb2buid, _reb2butkRB2B. Recognizes a returning browser for visitor identification. 360 days, 1 year.
  • _reb2bgeoRB2B. The location used to decide whether a visit can be identified. 20 days.
  • _reb2brefRB2B. The page or site that referred the visit. 15 days.
  • _reb2bfxf, _reb2btd, _reb2bliRB2B. Links the visit to an identified business profile. 1 month.
  • _reb2bresolveRB2B. Holds a match while it is being resolved. 2 days.
  • _reb2sessionID, _reb2bloadedRB2B. The current visit, and a guard against loading the script twice. 30 minutes, 1 second.

Functional

On unless you turn it off. Remembers choices such as a collapsed section.

View cookies (none today)