Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Isabel Casimiro, MD, PHD

Individual provider Internal Medicine Physician · NPI 1942615596

Isabel Casimiro, MD, PHD practises Endocrinology in Honolulu, Hawaii. Graduated from University of Washington School of Medicine in 2014, 12 years ago. Practices with Queens University Medical Group, a 623-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Hawaii and Illinois.

Years since qualifying
12
Trained at
University of Washington School of Medicine
Licensed in
HI, IL
In the registry since
2014
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

550 S Beretania St Ste 202
Honolulu, HI 96813-2496
Phone: (808) 691-8526
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 5841 S Maryland Ave # Mc1027, Chicago, IL 60637-1443 — (773) 702-6840

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence MD-22557 (HI)
Internal Medicine Physician Taxonomy 207R00000X · Licence 125064887 (IL)
Endocrinology, Diabetes & Metabolism Physician Taxonomy 207RE0101X · Licence 036.142507 (IL)

Record details

NPI number1942615596
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD , PHD
Sole proprietorYes
NPI enumeratedJune 23, 2014
Last updated in NPPESJuly 25, 2022
Certification dateJuly 25, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyENDOCRINOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF WASHINGTON SCHOOL OF MEDICINE
Graduated 2014 (12 years in practice)
Group practice Queens University Medical Group — 623 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients168
Services billed 415 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $717 11 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Queens University Medical Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 623 clinicians in the practice; 12 are shown here.

Other providers in Honolulu