Lorene K. Siaw, MD
Internal Medicine Physician · Wailuku, HI
Lorene K. Siaw, MD is an internal medicine physician with a practice address in Wailuku, Hawaii, and NPI 1417002510, issued on Jan 25, 2007. Check the license (Hawaii MD-8917, as entered in NPPES) on the Hawaii Medical Board; the Medicare figures below come from public CMS files.
- Name
- Lorene K. Siaw
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD-8917 HI
Self-reported in NPPES; status is on the state search - Practice location
- 2180 Main St, Wailuku, HI 96793
- Phone
- (808) 242-6464
- Enumerated
- Jan 25, 2007
- Record last updated
- Apr 7, 2008 (not updated in 18 years: call before relying on the address or phone)
- Medicaid ID
- 076141-01 HI
- Medicare enrollment
- Enrolled (PECOS I20070501000693); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 902 in Hawaii → Look up another NPI →
Also registered at 2180 Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- William Adler, M.D.Hematology & Oncology Physician1710918610
- Bert Akitake, M.D.Pediatrics Physician1568486348
- Insaf Ally, M.D.Internal Medicine Physician1750635801
- Tatiana Arce, APRNFamily Nurse Practitioner1003692583
- Nolan Arruda, M.D.Internal Medicine Physician1043242209
- Victoria Babushkina, MDInternal Medicine Physician1972568483
Verify Lorene K. Siaw in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersHawaii Medical Board
Search for license MD-8917Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,123 Medicare Part D claims for 132 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 13 claims were for opioids.
Most prescribed
- Atorvastatin Calcium87 claims
- Gabapentin57 claims
- Amlodipine Besylate32 claims
- Divalproex Sodium29 claims
- Tamsulosin Hcl27 claims
- Lactulose26 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).
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).
Lorene K. Siaw among 902 internal medicine physician records in Hawaii
Lorene K. Siaw, 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 2007, is newer than 45% of them.
- NPI issued2007 · 45% of these records are older, 43% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 54% of these records are
- Graduated1992 · median 2001 among the 491 with a school on file
- Record last updated2008 · 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).
39 internal medicine physician records list a practice address in Wailuku
They are 39 of the 1,087 NPPES records with a practice address in Wailuku, and 902 internal medicine physician records in Hawaii.
All 902 in Hawaii → Every provider in Wailuku → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Nolan Arruda, M.D.Wailuku, HI 967931043242209
- Victoria Babushkina, MDWailuku, HI 967931972568483
- Daniel Garcia, M.D.Wailuku, HI 967931689699449
- Russell Garn, M.D.Wailuku, HI 967931033134804
- Paul Grandon, MDWailuku, HI 967931215908959
- Arpana Gupta, MDWailuku, HI 967931285668624
- Kristen Gutermuth, M.D.Wailuku, HI 967931558386243
- Heather Haynes, M.D.Wailuku, HI 967931487664587
Common questions
What is Lorene K. Siaw, MD's NPI number?
Lorene K. Siaw, MD's National Provider Identifier (NPI) is 1417002510, issued on Jan 25, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Lorene K. Siaw, MD located?
The NPPES record lists a practice address at 2180 Main St, Wailuku, HI, 96793. Phone: (808) 242-6464. Providers update this record themselves, so call before visiting.
How can I verify Lorene K. Siaw, MD's license?
NPPES lists Hawaii license number MD-8917, 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 Lorene K. Siaw, MD prescribe under Medicare Part D?
In 2024, Lorene K. Siaw, MD had 1,123 Medicare Part D claims for 132 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Lorene K. Siaw, 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.