Karen H. Chang, MD
Internal Medicine Physician · Honolulu, HI
Karen H. Chang, MD is an internal medicine physician with a practice address in Honolulu, Hawaii, and NPI 1982273371, issued on Jun 21, 2021. Check the license (Hawaii MDR8053, as entered in NPPES) on the Hawaii Medical Board; the Medicare figures below come from public CMS files.
- Name
- Karen H. Chang
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MDR8053 HI
Self-reported in NPPES; status is on the state search - Practice location
- 2828 Paa St, Honolulu, HI 96819
- Phone
- (808) 432-5777
- Enumerated
- Jun 21, 2021
- Record last updated
- Jul 27, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20241010002293); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 902 in Hawaii → Look up another NPI →
Also registered at 2828 Paa St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Danny Asami, DPTPhysical Therapist1851759195
- Karen Badiable, FNP-CFamily Nurse Practitioner1881131563
- Kirill BalatskyInternal Medicine Physician1326778192
- Rebecca BassettGenetic Counselor (M.S.)1154731131
Verify Karen H. Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersHawaii Medical Board
Search for license MDR8053Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Most of these Medicare Part D claims are vaccines, 93% of the cost of the top drugs
167 Medicare Part D claims for 85 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
Pharmacies often give vaccines under a standing order that names one clinician, and CMS counts every such claim under that clinician's NPI. These claims are therefore not a measure of this clinician's own prescribing.
- Arexvy12 claims
- Atorvastatin Calcium12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Hawaii Permanente Medical Group IncHonolulu, HI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karen H. Chang among 902 internal medicine physician records in Hawaii
Karen H. Chang, MD is one of 902 internal medicine physician records with a practice address in Hawaii. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 84% of them.
- NPI issued2021 · 84% of these records are older, 14% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 54% of these records are
- Graduated2021 · median 2001 among the 491 with a school on file
- Record last updated2021 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Hawaii practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
579 internal medicine physician records list a practice address in Honolulu
They are 579 of the 12,408 NPPES records with a practice address in Honolulu, and 902 internal medicine physician records in Hawaii.
All 902 in Hawaii → Every provider in Honolulu → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jochebed Carter, MDHonolulu, HI 968191205826492
- Shubhangini Devine, M.D.Honolulu, HI 968191568456796
- Jo-Ann Garrigan, MDHonolulu, HI 968191760432074
- Randolph Leon Guerrero, M.D.Honolulu, HI 968191184689671
- Jhoanna Mabutas, MDHonolulu, HI 968191841281599
- Maria Cecilia Mangrobang, M.D.Honolulu, HI 968191265481063
- Matthew Matko, M.D.Honolulu, HI 968191033171640
- Laura Nagata, M.D.Honolulu, HI 968191972552883
Common questions
What is Karen H. Chang, MD's NPI number?
Karen H. Chang, MD's National Provider Identifier (NPI) is 1982273371, issued on Jun 21, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Karen H. Chang, MD located?
The NPPES record lists a practice address at 2828 Paa St, Honolulu, HI, 96819. Phone: (808) 432-5777. Providers update this record themselves, so call before visiting.
How can I verify Karen H. Chang, MD's license?
NPPES lists Hawaii license number MDR8053, as entered by the provider. Search the Hawaii Medical Board at https://cca.hawaii.gov/pvl/boards/medical/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Karen H. Chang, MD prescribe under Medicare Part D?
In 2024, Karen H. Chang, MD had 167 Medicare Part D claims for 85 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.