Thomas Ka Shun Tan, MD
Internal Medicine Physician · Honolulu, HI
Thomas Ka Shun Tan, MD is an internal medicine physician with a practice address in Honolulu, Hawaii, and NPI 1447328620, issued on Dec 4, 2006. Check the license (Hawaii MD9783, as entered in NPPES) on the Hawaii Medical Board; the Medicare figures below come from public CMS files.
- Name
- Thomas Ka Shun Tan
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD9783 HI
Self-reported in NPPES; status is on the state search - Practice location
- 2228 Liliha St, Honolulu, HI 96817
- Phone
- (808) 536-9326
- Enumerated
- Dec 4, 2006
- Record last updated
- Oct 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (808) 531-9053
- Medicare enrollment
- Enrolled (PECOS I20060113000009); accepts Medicare assignment
- Medical or professional school
- University Of Hawaii John A. Burns School Of Medicine, 1994
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 902 in Hawaii → Look up another NPI →
Also registered at 2228 Liliha St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael Bornemann, M.D.Specialist1184622920
- Patricia Chinn, MDSurgery Physician1700082898
- Raymond Davidson, M.D.Psychiatry Physician1790981884
- Takako Ishimaru-Tseng, MDPsychiatry Physician1043328511
- Lincoln Kobayashi, M.D.Internal Medicine Physician1043350770
- Thomas Lau, MDInternal Medicine Physician1871694208
Verify Thomas Ka Shun Tan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersHawaii Medical Board
Search for license MD9783Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.0 times the Medicare Part D claims of the average internal medicine physician in 2024
9,453 Medicare Part D claims for 633 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Atorvastatin Calcium975 claims
- Amlodipine Besylate565 claims
- Losartan Potassium530 claims
- Metformin Hcl393 claims
- Farxiga271 claims
- Levothyroxine Sodium268 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: $3,916.47
101 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Thomas Ka Shun Tan among 902 internal medicine physician records in Hawaii
Thomas Ka Shun Tan, 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 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 55% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 54% of these records are
- Graduated1994 · median 2001 among the 491 with a school on file
- Record last updated2007 · 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).
579 internal medicine physician records list a practice address in Honolulu
They are 579 of the 12,408 NPPES records with a practice address in Honolulu, and 902 internal medicine physician records in Hawaii.
All 902 in Hawaii → Every provider in Honolulu → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Julie Asari, M.D.Honolulu, HI 968171174520431
- Henry Cacanindin, M.D.Honolulu, HI 968171942253471
- Emilio Ganitano, M.D.Honolulu, HI 968171891740809
- Liang-Hsien Hahn, MD PHDHonolulu, HI 968171629028212
- Tad Iwanuma, M.D.Honolulu, HI 968171184600504
- Jonathan James, MDHonolulu, HI 968171366440901
- Lance Kagihara, MDHonolulu, HI 968171568411585
- Melanie Kelly, M.D.Honolulu, HI 968171982670154
Common questions
What is Thomas Ka Shun Tan, MD's NPI number?
Thomas Ka Shun Tan, MD's National Provider Identifier (NPI) is 1447328620, issued on Dec 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Ka Shun Tan, MD located?
The NPPES record lists a practice address at 2228 Liliha St, Honolulu, HI, 96817. Phone: (808) 536-9326. Providers update this record themselves, so call before visiting.
How can I verify Thomas Ka Shun Tan, MD's license?
NPPES lists Hawaii license number MD9783, 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 Thomas Ka Shun Tan, MD prescribe under Medicare Part D?
In 2024, Thomas Ka Shun Tan, MD had 9,453 Medicare Part D claims for 633 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.