Dr. Young K. Chang, MD
- Medicare services, 2024
- 2,147
- Medicare patients, 2024
- 401
- Part D claims, 2024
- 2,666
- MIPS score, 2024
- 25
- Industry payments
- $41
- Practice address
- 459 Patterson Rd, Honolulu, HI 96819
- Practice phone
- Call (671) 646-6956
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Fhp Health Center
Honolulu, Hawaii
Find Dr. Chang's professional email, personal email and mobile number
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Dr. Young K. Chang is an internist in Honolulu, Hawaii
Dr. Chang practices at Fhp Health Center in Honolulu, Hawaii.
Dr. Chang's NPI, 1639218290, was assigned on February 6, 2007. Dr. Chang holds Guam license M1121.
- NPI
- 1639218290NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0042100927
- NPI enumeration date
- February 6, 2007
- NPI status
- Active
- Practice phone
- (671) 646-6956
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 66
- Medical school graduation
- 1986
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Young K. Chang practices at Fhp Health Center in Honolulu, Hawaii
Dr. Chang's primary practice is Fhp Health Center, at 459 Patterson Rd, Honolulu, HI 96819 in Honolulu County. The practice phone is (671) 646-6956.
- Fhp Health Center459 Patterson Rd, Honolulu, HI 96819 · Honolulu CountyPhone(671) 646-6956
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Young K. Chang is affiliated with 4 sites of care and 1 medical group
Dr. Chang's primary practice is Fhp Health Center in Honolulu, Hawaii. The medical group on file is Guam Memorial Hospital Authority (Guam Memorial Hospital). Dmand AI also links Dr. Chang to 3 more home health agencies, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Young K. 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 |
|---|---|
| Fhp Health Center | 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. Young K. Chang is one of 771 internists in Hawaii
Internal medicine is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Chang is licensed in Guam.
Specialties and state licenses
- Internal medicine, GuamPrimary
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. Young K. Chang billed Medicare for 2,147 services in 2024
CMS data shows 2,147 Medicare services from Dr. Chang across 10 procedure codes in 2024, for 401 Medicare patients. Medicare paid $130,529 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: 1,9072024: 1,8443%
- Tests and treatments
- 2023: 4322024: 16462%
- Other services
- 2023: 3792024: 13963%
Dr. Chang compared with the Hawaii median for internists, 2024
- Dr. Chang
- Hawaii median
- Medicare services
- 2,147vs 3426.3 times
- Medicare patients
- 401vs 1283.1 times
- Part D claims
- 2,435vs 6703.6 times
Medians across 699 internists in Hawaii 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 internists in Hawaii.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Young K. Chang treated 401 Medicare patients in 2024, average age 73
CMS counts 401 Medicare patients who saw Dr. Chang in 2024. The largest group is 65 to 74, with 173 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 24% are also on Medicaid. Their average risk score is 1.22, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chang's median patient age at 67, with 50% women.
Dr. Chang's Medicare patients by age, 2024
Dr. Chang's Medicare patients by sex, 2024
- Women21353%
- Men18847%
Chronic conditions among Dr. Chang's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes48%
- Chronic kidney disease22%
- Arthritis21%
- COPD15%
- Ischemic heart disease15%
- Tobacco use14%
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 67
Patient panel by sex, all payers
- Women50%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Young K. Chang wrote 2,666 Medicare Part D claims in 2024
In 2024, Dr. Chang wrote 2,666 Medicare Part D claims for 89 patients. 91% of them were for generic drugs. CMS names the drug for 2,435 of them, across 48 drugs with 11 or more claims each, at $60,659 in total drug cost. In 2023, CMS named 2,386 claims across 45 drugs.
Dr. Chang's Part D claims by kind of drug, 2024
- Generic2,426 claims91%
- Brand-name177 claims7%
- Other63 claims2%
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
- Opioids1%31 of 2,666 claims
- Antibiotics3%84 of 2,666 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: 2,3862024: 2,4352%
Drugs named by CMS: 48 in 2024, 45 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. Young K. Chang scored 25 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 25 out of 100 for Dr. Chang for performance year 2024, reported individually.
Dr. Chang's MIPS scores, performance year 2024
- 25of 100Final score
- 0of 100Quality
- 0of 100Improvement Activities
- 82of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Young K. Chang received $41 in industry payments in 2021
CMS Open Payments shows 1 general payment to Dr. Chang from 1 drug or device company in 2021. Food and beverage make up the largest share, 100% of the total. W. L. Gore & Associates, Inc. paid the most, $41.
Companies that paid Dr. Chang the most, 2021 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Young K. 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 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 | Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Young K. 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. Young K. Chang's NPI number?
Dr. Young K. Chang's NPI number is 1639218290. It was assigned on February 6, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Young K. Chang?
Dr. Young K. Chang is an internist in Honolulu, Hawaii. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Young K. Chang practice?
Dr. Chang practices at 459 Patterson Rd, Honolulu, HI 96819. Dr. Chang's primary practice is Fhp Health Center in Honolulu, Hawaii. Dmand AI also links Dr. Chang to 3 home health agencies.
What is Dr. Young K. Chang's office phone number?
The practice phone on file for Dr. Chang is (671) 646-6956.
What is Dr. Young K. Chang's medical license number?
Dr. Chang holds Guam license M1121.
What medical group is Dr. Young K. Chang part of?
Dr. Chang is linked to Guam Memorial Hospital Authority (Guam Memorial Hospital).
Does Dr. Young K. Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 2,147 services in 2024.
What is Dr. Young K. Chang's MIPS score?
Dr. Chang's MIPS final score for performance year 2024 is 25 out of 100, reported individually.
How many Medicare patients does Dr. Young K. Chang see?
CMS counts 401 Medicare patients who saw Dr. Chang in 2024, with an average age of 73.
What services does Dr. Young K. Chang bill to Medicare?
In 2024, Dr. Chang's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and medicare service (G0008).
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What drugs does Dr. Young K. Chang prescribe most?
In 2024 Medicare Part D data, Dr. Chang's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Nifedipine ER.
Has Dr. Young K. Chang received payments from drug or device companies?
CMS Open Payments shows $41 in general payments to Dr. Chang from 1 company from 2021 to 2021. The largest total came from W. L. Gore & Associates, Inc.
How long has Dr. Young K. Chang been practicing?
Dr. Chang graduated from medical school in 1986, 40 years ago.
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