Dr. Henry Chang, DO
- Medicare services, 2024
- 841
- Medicare patients, 2024
- 188
- Part D claims, 2024
- 5,437
- Publications
- 1
- Hospital affiliations
- 1
- Practice address
- 2707 E Valley Blvd, West Covina, CA 91792
- Practice phone
- Call (626) 581-0486
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Star Health Medical, Professional Corporation
West Covina, 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. Henry Chang is an internist in West Covina, California
Dr. Chang practices at Star Health Medical, Professional Corporation in West Covina, California.
Dr. Chang's NPI, 1740430289, was assigned on September 21, 2008. Dr. Chang graduated from WesternU College of Osteopathic Medicine of the Pacific in 2007. Dr. Chang holds California license 20A10516.
- NPI
- 1740430289NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0143359844
- NPI enumeration date
- September 21, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (626) 581-0486
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Henry Chang practices at Star Health Medical, Professional Corporation in West Covina, California
Dr. Chang's primary practice is Star Health Medical, Professional Corporation, at 2707 E Valley Blvd, West Covina, CA 91792 in Los Angeles County. The practice phone is (626) 581-0486.
- Star Health Medical, Professional Corporation2707 E Valley Blvd, West Covina, CA 91792 · Los Angeles CountyPhone(626) 581-0486
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Henry Chang is affiliated with 4 sites of care and 1 medical group
Dr. Chang's primary practice is Star Health Medical, Professional Corporation in West Covina, California. Dr. Chang is also affiliated with Providence Saint John's Health Center. The medical group on file is Star Health Medical. Dmand AI also links Dr. Chang to 1 more group practice or clinic and 1 home health agency, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Henry Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Star Health Medical, Professional Corporation | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Henry Chang is one of 16,751 internists in California
Internal medicine is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Chang is board certified in 2023 - 2025 by the AL State License. Dr. Chang is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists acid reflux, acute sinusitis, acute skin infection, alzheimer's disease, aneurysm, anxiety, arthritis and asthma among the conditions Dr. Chang treats.
Internists near Dr. Chang
Counts of internists 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. Henry Chang billed Medicare for 841 services in 2024
CMS data shows 841 Medicare services from Dr. Chang across 3 procedure codes in 2024, for 188 Medicare patients. Medicare paid $111,922 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: 8042024: 7694%
- Other services
- 2023: 732024: 721%
Dr. Chang compared with the California median for internists, 2024
- Dr. Chang
- California median
- Medicare services
- 841vs 3612.3 times
- Medicare patients
- 188vs 15125% above
- Part D claims
- 4,873vs 42111.6 times
Medians across 15,815 internists 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 internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Henry Chang treated 188 Medicare patients in 2024, average age 72
CMS counts 188 Medicare patients who saw Dr. Chang in 2024. The largest group is 65 to 74, with 103 patients. 75% of them have high cholesterol, and 72% have high blood pressure. 77% 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 56, with 54% women.
Dr. Chang's Medicare patients by age, 2024
Dr. Chang's Medicare patients by sex, 2024
- Women10254%
- Men8646%
Chronic conditions among Dr. Chang's Medicare patients, 2024
- High cholesterol75%
- High blood pressure72%
- Diabetes45%
- Arthritis42%
- Osteoporosis33%
- Chronic kidney disease27%
- Ischemic heart disease18%
- Anxiety16%
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 56
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. Henry Chang wrote 5,437 Medicare Part D claims in 2024
In 2024, Dr. Chang wrote 5,437 Medicare Part D claims for 750 patients. 85% of them were for generic drugs. CMS names the drug for 4,873 of them, across 84 drugs with 11 or more claims each, at $582,461 in total drug cost. In 2023, CMS named 4,722 claims across 78 drugs.
Dr. Chang's Part D claims by kind of drug, 2024
- Generic4,625 claims85%
- Brand-name751 claims14%
- Other61 claims1%
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%13 of 5,437 claims
- Antibiotics5%252 of 5,437 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: 4,7222024: 4,8733%
Drugs named by CMS: 84 in 2024, 78 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
How Dr. Henry Chang takes part in Medicare
Dr. Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Henry Chang has 1 publication on record
Dmand AI links 1 paper to Dr. Chang.
Recent publications by Dr. Chang
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 internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Henry Chang received $9,070 in industry payments from 2016 to 2025
CMS Open Payments shows 297 general payments to Dr. Chang from 30 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 71% of the total. Sanofi and Genzyme US Companies paid the most, $2,838.
General payments to Dr. Chang by program year, 2016 to 2025
General payments to Dr. Chang by kind, 2016 to 2025
- Food and beverage$6,47971%
- Consulting fees$2,14624%
- Travel and lodging$3514%
- Education$941%
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. Henry Chang has 1 award and honors on record
Dmand AI lists 1 award for Dr. Chang, most recently CMS Stage 1 EHR in 2012.
Awards and honors for Dr. Chang
- 2012
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Henry Chang graduated from WesternU College of Osteopathic Medicine of the Pacific
Dr. Chang graduated from WesternU College of Osteopathic Medicine of the Pacific in 2007. Dr. Chang is a member of AOA.
- Medical school
- Board certified in 2023 - 2025
- Board certified in internal medicine
- Board certified in internal medicine
- Board certified in 2023 - 2026
- Board certified in 2008 - 2025
- Board certified in 2023 - 2027
- Board certified in 2023 - 2025
- Board certified in 2023 - 2024
- Board certified in 2023 - 2027
- Board certified in 2022 - 2026
- Board certified in 2023 - 2026
- Board certified in active through 2025
- Board certified in 2025 - 2026
- Board certified in 2023 - 2026
- Board certified in 2023 - 2026
- Board certified in 2023 - 2026
- Board certified in 2023 - 2025
- Board certified in 2023 - 2025
- Board certified in 2016 - 2026
- Board certified in 2023 - 2025
- Board certified in 2023 - 2026
- Board certified in 2023 - 2026
- Board certified in 2023 - 2026
- Board certified in 2023 - 2026
- Board certified in 2024 - 2026
- Board certified in 2023 - 2026
- Board certified in 2023 - 2027
- Board certified in 2022 - 2026
- Board certified in 2023 - 2026
- Board certified in 2023 - 2024
- Board certified in 2023 - 2027
- Board certified in 2024 - 2027
- Board certified in 2023 - 2025
- Board certified in 2016 - 2026
- Board certified in 2023 - 2027
- Board certified in 2023 - 2026
- Board certified in 2024 - 2026
- Board certified in active through 2027
- Board certified in 2023 - 2026
- Board certified in 2023 - 2027
- Board certified in 2023 - 2026
- Board certified in 2016 - 2026
- Board certified in 2023 - 2026
- Board certified in 2023 - 2026
- Board certified in 2023 - 2025
- Board certified in 2023 - 2027
- Board certified in 2023 - 2026
Source: Dmand AI Professional Profile Data
Dr. Henry Chang accepts plans from 19 insurance carriers
Dr. Chang is in network with 19 carriers, including Aetna, Elevance and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
- Aetna
- Elevance
- United Healthcare
- HCSC
- LA Care
- Blue Cross Blue Shield of Massachusetts
- Blue Cross Blue Shield of Michigan
- Molina
- +11 more carriersWith a free account
Plan types Dr. Chang accepts, by number of carriers
- PPO10
- HMO9
- Medicare9
- EPO5
- POS4
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Henry 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 |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| 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) |
| 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. Henry 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. Henry Chang's NPI number?
Dr. Henry Chang's NPI number is 1740430289. It was assigned on September 21, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Henry Chang?
Dr. Henry Chang is an internist in West Covina, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Henry Chang practice?
Dr. Chang practices at 2707 E Valley Blvd, West Covina, CA 91792. Dr. Chang's primary practice is Star Health Medical, Professional Corporation in West Covina, California. Dmand AI also links Dr. Chang to 1 group practice or clinic and 1 home health agency.
What is Dr. Henry Chang's office phone number?
The practice phone on file for Dr. Chang is (626) 581-0486.
What is Dr. Henry Chang's medical license number?
Dr. Chang holds California license 20A10516.
Which hospitals is Dr. Henry Chang affiliated with?
Dr. Chang is affiliated with Providence Saint John's Health Center.
What medical group is Dr. Henry Chang part of?
Dr. Chang is linked to Star Health Medical.
Does Dr. Henry Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 841 services in 2024, and Dr. Chang accepts Medicare assignment.
How many Medicare patients does Dr. Henry Chang see?
CMS counts 188 Medicare patients who saw Dr. Chang in 2024, with an average age of 72.
Is Dr. Henry Chang board certified?
Yes. Dr. Chang is board certified in 2023 - 2025 by the AL State License.
Show 7 more questionsShow fewer questions
What services does Dr. Henry Chang bill to Medicare?
In 2024, Dr. Chang's most billed Medicare services were office visit, established patient (99215), medicare service (G0439) and office visit, new patient (99205).
Where did Dr. Henry Chang go to medical school?
Dr. Chang graduated from WesternU College of Osteopathic Medicine of the Pacific in 2007.
What drugs does Dr. Henry Chang prescribe most?
In 2024 Medicare Part D data, Dr. Chang's most prescribed drugs by claims were Atorvastatin Calcium, Losartan Potassium and Metoprolol Succinate.
Has Dr. Henry Chang received payments from drug or device companies?
CMS Open Payments shows $9,070 in general payments to Dr. Chang from 30 companies from 2016 to 2025. The largest total came from Sanofi and Genzyme US Companies.
How long has Dr. Henry Chang been practicing?
Dr. Chang graduated from medical school in 2007, 19 years ago.
Does Dr. Henry Chang do research?
Dmand AI links 1 publication to Dr. Chang.
What insurance does Dr. Henry Chang accept?
Dr. Chang is in network with 19 carriers, including Aetna, Elevance and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
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