Catherine Joanne Simonovich Tsang, M.D.
Family Medicine Physician · Waianae, HI
Catherine Joanne Simonovich Tsang, M.D. is a family medicine physician with a practice address in Waianae, Hawaii, and NPI 1154525368, issued on Jun 12, 2007. Check the license (Hawaii MD-14843, as entered in NPPES) on the Hawaii Medical Board; the Medicare figures below come from public CMS files.
- Name
- Catherine Joanne Simonovich Tsang
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MD-14843 HI
Self-reported in NPPES; status is on the state search - Practice location
- 86-260 Farrington Hwy, Waianae, HI 96792
- Phone
- (808) 697-3300
- Enumerated
- Jun 12, 2007
- Record last updated
- Dec 2, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20090925000396); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 730 in Hawaii → Look up another NPI →
Also registered at 86-260 Farrington Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Christina Adams, M.D.Family Medicine Physician1215132915
- Tiana Rose Ahue, PA-CPhysician Assistant1740731546
- Ku'Upua Akana, PHARM.DPharmacist1851679377
- Cynthia Akasaki, R.D.Registered Dietitian1346434321
- Kevin Akiyama, PSY.DClinical Psychologist1487974838
- Razel Alibin, FNPFamily Nurse Practitioner1043000805
Verify Catherine Joanne Simonovich Tsang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersHawaii Medical Board
Search for license MD-14843Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
45% fewer Medicare Part D claims than the average family medicine physician in 2024
1,959 Medicare Part D claims for 122 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 22 claims were for opioids.
Most prescribed
- Atorvastatin Calcium163 claims
- Metformin Hcl Er111 claims
- Lisinopril99 claims
- Rosuvastatin Calcium83 claims
- Losartan Potassium77 claims
- Amlodipine Besylate73 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
- Waimanalo Health CenterWaimanalo, HI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Catherine Joanne Simonovich Tsang among 730 family medicine physician records in Hawaii
Catherine Joanne Simonovich Tsang, M.D. is one of 730 family medicine physician records with a practice address in Hawaii. 65% 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 42% of them.
- NPI issued2007 · 42% of these records are older, 47% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2006 · median 2006 among the 383 with a school on file
- Record last updated2011 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Hawaii practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
21 family medicine physician records list a practice address in Waianae
They are 21 of the 440 NPPES records with a practice address in Waianae, and 730 family medicine physician records in Hawaii.
All 730 in Hawaii → Every provider in Waianae → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Christina Adams, M.D.Waianae, HI 967921215132915
- Debbie Atkinson, M.D.Waianae, HI 967921700800588
- Carolina Davide, M.D.Waianae, HI 967921235170689
- Jan Inao, MDWaianae, HI 967921235239930
- Terri Kakugawa, DOWaianae, HI 967921154417756
- Leimomi KanagusukuWaianae, HI 967921134619083
- Bong Jik Kim, M.D.Waianae, HI 967921891179024
- Malia-Susanne Lee, MDWaianae, HI 967921083798722
Common questions
What is Catherine Joanne Simonovich Tsang, M.D.'s NPI number?
Catherine Joanne Simonovich Tsang, M.D.'s National Provider Identifier (NPI) is 1154525368, issued on Jun 12, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Catherine Joanne Simonovich Tsang, M.D. located?
The NPPES record lists a practice address at 86-260 Farrington Hwy, Waianae, HI, 96792. Phone: (808) 697-3300. Providers update this record themselves, so call before visiting.
How can I verify Catherine Joanne Simonovich Tsang, M.D.'s license?
NPPES lists Hawaii license number MD-14843, 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 Catherine Joanne Simonovich Tsang, M.D. prescribe under Medicare Part D?
In 2024, Catherine Joanne Simonovich Tsang, M.D. had 1,959 Medicare Part D claims for 122 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.