Ioannis Karakalpakis, MD
Hospitalist Physician · Wailuku, HI
Ioannis Karakalpakis, MD is a hospitalist physician with a practice address in Wailuku, Hawaii, and NPI 1033418264, issued on Mar 28, 2011. Check the license (Hawaii MD-19155, as entered in NPPES) on the Hawaii Medical Board; the Medicare figures below come from public CMS files.
- Name
- Ioannis Karakalpakis
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- MD-19155 HI
Self-reported in NPPES; status is on the state search - Practice location
- 221 Mahalani St, Wailuku, HI 96793
- Phone
- (808) 442-5503
- Enumerated
- Mar 28, 2011
- Record last updated
- Mar 29, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (808) 442-5512
- Medicare enrollment
- Enrolled (PECOS I20171102002922); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 221 Mahalani St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Bettina Ackermann, MDPediatrics Physician1205807625
- Naira ArellanoAcute Care Nurse Practitioner1831525898
- Danielle Aubert-Anderson, LMSWSocial Worker1508369422
- James Bendon, MDDiagnostic Radiology Physician1780725432
- Miriam BerchukAnesthesiology Physician1013573823
- Ariel Berrios, PA-CPhysician Assistant1669911640
Verify Ioannis Karakalpakis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersHawaii Medical Board
Search for license MD-19155Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
28% fewer Medicare Part D claims than the average hospitalist physician in 2024
376 Medicare Part D claims for 165 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. 31 claims were for opioids.
Most prescribed
- Cephalexin24 claims
- Metoprolol Succinate21 claims
- Atorvastatin Calcium20 claims
- Cefpodoxime Proxetil20 claims
- Amlodipine Besylate17 claims
- Hydrocodone-Acetaminophen17 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 87 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $38.62
2 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 7,324 providers of this specialty with any payment received $494.84 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
- Maui Medical Group IncWailuku, HI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
29 hospitalist physician records list a practice address in Wailuku
They are 29 of the 1,087 NPPES records with a practice address in Wailuku, and 159 hospitalist physician records in Hawaii.
All 29 in Wailuku → All 159 in Hawaii → Every provider in Wailuku →
Other hospitalist physician records in Hawaii
- Michael Abdo, M.D.Ewa Beach, HI1730671116
- David Adler, MDLihue, HI1437507506
- Quinlinn Adolpho, MDTripler Amc, HI1871098483
- Kristie Akamine, M.D.Honolulu, HI1184985723
- Mohammed Ali, MDHonolulu, HI1518529676
- Wint Aye, MDHonolulu, HI1437491784
- Imtiaz Bangash, MDHonolulu, HI1003216953
- David Bell, MDHonolulu, HI1386744399
- Andrea Bernhard, M.D.Aiea, HI1477848935
- Evan Brown, DOWailuku, HI1477754331
Common questions
What is Ioannis Karakalpakis, MD's NPI number?
Ioannis Karakalpakis, MD's National Provider Identifier (NPI) is 1033418264, issued on Mar 28, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Ioannis Karakalpakis, MD located?
The NPPES record lists a practice address at 221 Mahalani St, Wailuku, HI, 96793. Phone: (808) 442-5503. Providers update this record themselves, so call before visiting.
How can I verify Ioannis Karakalpakis, MD's license?
NPPES lists Hawaii license number MD-19155, 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 Ioannis Karakalpakis, MD prescribe under Medicare Part D?
In 2024, Ioannis Karakalpakis, MD had 376 Medicare Part D claims for 165 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
What is Ioannis Karakalpakis, MD's MIPS final score?
The 2023 MIPS final score is 87 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.