Aaron Joseph Kho Tiu, M.D.
Internal Medicine Physician · New Haven, CT
Aaron Joseph Kho Tiu, M.D. is an internal medicine physician with a practice address in New Haven, Connecticut, and NPI 1659996601, issued on Jun 15, 2020. Check the license (Connecticut 73070, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Aaron Joseph Kho Tiu
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 73070 CT
57.249173 OH
Self-reported in NPPES; status is on the state search - Practice location
- 20 York Street, New Haven, CT 06510
- Phone
- (203) 502-6502
- Enumerated
- Jun 15, 2020
- Record last updated
- Sep 17, 2023
- Fax
- (203) 502-6556
- Medicare enrollment
- Enrolled (PECOS I20230822002508); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,623 in Connecticut → Look up another NPI →
Also registered at 20 York Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Aaron Joseph Kho Tiu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 73070Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average internal medicine physician in 2024
124 Medicare Part D claims for 47 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Amlodipine Besylate15 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 MIPS final score for 2023 (Medicare payment program): 93.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Northeast Medical Group IncNew Haven, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Aaron Joseph Kho Tiu among 2,623 internal medicine physician records in Connecticut
Aaron Joseph Kho Tiu, M.D. is one of 2,623 internal medicine physician records with a practice address in Connecticut. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 88% of them.
- NPI issued2020 · 88% of these records are older, 9% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2012 · median 2004 among the 1,646 with a school on file
- Record last updated2023 · 61% 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 Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
329 internal medicine physician records list a practice address in New Haven
They are 329 of the 9,793 NPPES records with a practice address in New Haven, and 2,623 internal medicine physician records in Connecticut.
All 2,623 in Connecticut → Every provider in New Haven → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- William Becker, M.D.New Haven, CT 065101154427656
- William Crede, MDNew Haven, CT 065101760455984
- Robert Gifford, M.D.New Haven, CT 065101407982242
- Frederick Haeseler, MDNew Haven, CT 065101295862084
- Peter Herbert, MDNew Haven, CT 065101033191465
- Rajlakshmi Krishnamurthy, MDNew Haven, CT 065101568487346
- Chandrika Kumar, M.D.New Haven, CT 065101386645448
- Frank Mongillo, MDNew Haven, CT 065101811917289
Common questions
What is Aaron Joseph Kho Tiu, M.D.'s NPI number?
Aaron Joseph Kho Tiu, M.D.'s National Provider Identifier (NPI) is 1659996601, issued on Jun 15, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Aaron Joseph Kho Tiu, M.D. located?
The NPPES record lists a practice address at 20 York Street, New Haven, CT, 06510. Phone: (203) 502-6502. Providers update this record themselves, so call before visiting.
How can I verify Aaron Joseph Kho Tiu, M.D.'s license?
NPPES lists Connecticut license number 73070, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Aaron Joseph Kho Tiu, M.D. prescribe under Medicare Part D?
In 2024, Aaron Joseph Kho Tiu, M.D. had 124 Medicare Part D claims for 47 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Aaron Joseph Kho Tiu, M.D.'s MIPS final score?
The 2023 MIPS final score is 93.3 of 100. 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.