Dr. Karen H. Chang, MD
- Medicare patients, 2024
- 11
- Part D claims, 2024
- 167
- Hospital affiliations
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 2828 Pa'A Street, Honolulu, HI 96819
- Practice phone
- Call (808) 432-5738
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Ambulatory Surgery Center at Kaiser Permanente Mapunapuna Medical Office
Surgery Center - Medicare-Certified · Honolulu, Hawaii
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. Karen H. Chang is an internist in Honolulu, Hawaii
Dr. Chang practices at Ambulatory Surgery Center at Kaiser Permanente Mapunapuna Medical Office in Honolulu, Hawaii.
Dr. Chang's NPI, 1982273371, was assigned on June 21, 2021. Dr. Chang holds Hawaii license MDR8053.
- NPI
- 1982273371NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6103358569
- NPI enumeration date
- June 21, 2021
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (808) 432-5738
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 31
- Medical school graduation
- 2021
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Karen H. Chang practices at Ambulatory Surgery Center at Kaiser Permanente Mapunapuna Medical Office in Honolulu, Hawaii
Dr. Chang's primary practice is Ambulatory Surgery Center at Kaiser Permanente Mapunapuna Medical Office, at 2828 Pa'A Street, Honolulu, HI 96819. The practice phone is (808) 432-5738.
- Ambulatory Surgery Center at Kaiser Permanente Mapunapuna Medical Office2828 Pa'A Street, Honolulu, HI 96819Phone(808) 432-5738
Source: Dmand AI Affiliation Data
Dr. Karen H. Chang is affiliated with 4 sites of care and 1 medical group
Dr. Chang's primary practice is Ambulatory Surgery Center at Kaiser Permanente Mapunapuna Medical Office in Honolulu, Hawaii. Dr. Chang is also affiliated with Kaiser Permanente Moanalua Medical Center. The medical group on file is Hawaii Permanente Medical Group (HPMG). Dmand AI also links Dr. Chang to 1 more group practice or clinic and 1 hospice, 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. Karen H. Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ambulatory Surgery Center at Kaiser Permanente Mapunapuna Medical Office | 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. Karen H. 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 Hawaii.
Specialties and state licenses
- Internal medicine, HawaiiPrimary
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. Karen H. Chang treated 11 Medicare patients in 2024, average age 75
CMS counts 11 Medicare patients who saw Dr. Chang in 2024. The largest group is under 65, with 0 patients. 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 52, with 61% women.
Dr. Chang's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
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 52
Patient panel by sex, all payers
- Women61%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Karen H. Chang wrote 167 Medicare Part D claims in 2024
In 2024, Dr. Chang wrote 167 Medicare Part D claims for 85 patients. 71% of them were for generic drugs. CMS names the drug for 24 of them, across 2 drugs with 11 or more claims each, at $1,896 in total drug cost.
Dr. Chang's Part D claims by kind of drug, 2024
- Generic119 claims71%
- Brand-name and other48 claims29%
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
- Antibiotics8%14 of 167 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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. Karen H. Chang offers telehealth to Medicare patients
Dr. Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Chang as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Sources for Dr. Karen H. 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 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) |
| 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. Karen H. 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. Karen H. Chang's NPI number?
Dr. Karen H. Chang's NPI number is 1982273371. It was assigned on June 21, 2021, and it is active in the NPI Registry.
What kind of doctor is Dr. Karen H. Chang?
Dr. Karen H. Chang is an internist in Honolulu, Hawaii. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Karen H. Chang practice?
Dr. Chang practices at 2828 Pa'A Street, Honolulu, HI 96819. Dr. Chang's primary practice is Ambulatory Surgery Center at Kaiser Permanente Mapunapuna Medical Office in Honolulu, Hawaii. Dmand AI also links Dr. Chang to 1 group practice or clinic and 1 hospice.
What is Dr. Karen H. Chang's office phone number?
The practice phone on file for Dr. Chang is (808) 432-5738.
What is Dr. Karen H. Chang's medical license number?
Dr. Chang holds Hawaii license MDR8053.
Which hospitals is Dr. Karen H. Chang affiliated with?
Dr. Chang is affiliated with Kaiser Permanente Moanalua Medical Center.
What medical group is Dr. Karen H. Chang part of?
Dr. Chang is linked to Hawaii Permanente Medical Group (HPMG).
Does Dr. Karen H. Chang accept Medicare?
Yes. CMS lists Dr. Chang as accepting Medicare assignment.
Does Dr. Karen H. Chang offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Chang as offering telehealth services.
How many Medicare patients does Dr. Karen H. Chang see?
CMS counts 11 Medicare patients who saw Dr. Chang in 2024, with an average age of 75.
What drugs does Dr. Karen H. Chang prescribe most?
In 2024 Medicare Part D data, Dr. Chang's most prescribed drugs by claims were Arexvy and Atorvastatin Calcium.
How long has Dr. Karen H. Chang been practicing?
Dr. Chang graduated from medical school in 2021, 5 years ago.
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