Isabel Casimiro, M.D., PH.D.
Endocrinology, Diabetes & Metabolism Physician · Honolulu, HI
Isabel Casimiro, M.D., PH.D. is an endocrinology, diabetes & metabolism physician with a practice address in Honolulu, Hawaii, and NPI 1942615596, issued on Jun 23, 2014. Check the license (Hawaii MD-22557, as entered in NPPES) on the Hawaii Medical Board; the Medicare figures below come from public CMS files.
- Name
- Isabel Casimiro
- Credential
- M.D., PH.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License numbers
- MD-22557 HI
036.142507 IL
125064887 IL
Self-reported in NPPES; status is on the state search - Practice location
- 550 S Beretania St Ste 202, Honolulu, HI 96813
- Phone
- (808) 691-8526
- Enumerated
- Jun 23, 2014
- Record last updated
- Jul 25, 2022
- Medicare enrollment
- Enrolled (PECOS I20220711002441); accepts Medicare assignment
- Medical or professional school
- University Of Washington School Of Medicine, 2014
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 24 in Hawaii → Look up another NPI →
Also registered at 550 S Beretania St Ste 202
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Chanhaeng Rhee, MDEndocrinology, Diabetes & Metabolism Physician1649464280
Verify Isabel Casimiro in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersHawaii Medical Board
Search for license MD-22557Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
2,428 Medicare Part D claims for 238 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 47% of claims.
Most prescribed
- Levothyroxine Sodium225 claims
- Ozempic174 claims
- Atorvastatin Calcium125 claims
- Hydrocortisone96 claims
- Jardiance83 claims
- Nano 2nd Gen Pen Needle76 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.
Industry payments in 2024: $439.55
6 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 5,661 providers of this specialty with any payment received $5,742.15 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Queens University Medical GroupHonolulu, HI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Isabel Casimiro among 24 endocrinology, diabetes & metabolism physician records in Hawaii
Isabel Casimiro, M.D., PH.D. is one of 24 endocrinology, diabetes & metabolism physician records with a practice address in Hawaii. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 79% of them.
- NPI issued2014 · 79% of these records are older, 17% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2014 · median 2003 among the 16 with a school on file
- Record last updated2022 · 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 207RE0101X and a Hawaii practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Hawaii
There are 24 endocrinology, diabetes & metabolism physician records in Hawaii.
All 24 in Hawaii → Every provider in Honolulu → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Mariko Johnson, M.D.Honolulu, HI 968131629279617
- Eric Lee, DO, MPH, MSHonolulu, HI 968131306308796
- John Meyer, M.D., PH.D.Honolulu, HI 968131750377404
- Chanhaeng Rhee, MDHonolulu, HI 968131649464280
- Kelsey Shikuma Lee, MDHonolulu, HI 968131568782605
- Frank Singer, M.D.Honolulu, HI 968131134217961
- Kamonkiat Wirunsawanya, M.D.Honolulu, HI 968131639552599
- Lisa Wong, MDHonolulu, HI 968131891760260
Common questions
What is Isabel Casimiro, M.D., PH.D.'s NPI number?
Isabel Casimiro, M.D., PH.D.'s National Provider Identifier (NPI) is 1942615596, issued on Jun 23, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Isabel Casimiro, M.D., PH.D. located?
The NPPES record lists a practice address at 550 S Beretania St Ste 202, Honolulu, HI, 96813. Phone: (808) 691-8526. Providers update this record themselves, so call before visiting.
How can I verify Isabel Casimiro, M.D., PH.D.'s license?
NPPES lists Hawaii license number MD-22557, 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 Isabel Casimiro, M.D., PH.D. prescribe under Medicare Part D?
In 2024, Isabel Casimiro, M.D., PH.D. had 2,428 Medicare Part D claims for 238 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.