Tien-Tsai Tsai, M.D.
Internal Medicine Physician · Flushing, NY
Tien-Tsai Tsai, M.D. is an internal medicine physician with a practice address in Flushing, New York, and NPI 1558525196, issued on Jul 14, 2008. Check the license (New York 272019, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Tien-Tsai Tsai
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 272019 NY
Self-reported in NPPES; status is on the state search - Practice location
- 13336 41St RD Ste 1, Flushing, NY 11355
- Phone
- (347) 529-5303
- Enumerated
- Jul 14, 2008
- Record last updated
- Jul 21, 2022
- Fax
- (347) 529-5303
- Medicare enrollment
- Enrolled (PECOS I20100222000832); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 12,067 in New York → Look up another NPI →
Also registered at 13336 41St RD Ste 1
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Paul Li, MDFamily Medicine Physician1053325407
Verify Tien-Tsai Tsai in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 272019Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
7% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,969 Medicare Part D claims for 89 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Amlodipine Besylate232 claims
- Atorvastatin Calcium227 claims
- Tamsulosin Hcl109 claims
- Hydralazine Hcl89 claims
- Januvia86 claims
- Xarelto76 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.
Tien-Tsai Tsai among 12,067 internal medicine physician records in New York
Tien-Tsai Tsai, M.D. is one of 12,067 internal medicine physician records with a practice address in New York. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 56% of them.
- NPI issued2008 · 56% of these records are older, 40% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2000 · median 2002 among the 7,221 with a school on file
- Record last updated2022 · 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 New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
242 internal medicine physician records list a practice address in Flushing
They are 242 of the 6,354 NPPES records with a practice address in Flushing, and 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in Flushing → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Karen Beekman, MDFlushing, NY 113551245296870
- Min Cai, M.D.Flushing, NY 113551003813676
- Tak Chan, M.D.Flushing, NY 113551265437842
- Vincent Chua, M.D.Flushing, NY 113551841278579
- Jiangping GanFlushing, NY 113551134199920
- Mohinder Gupta, MDFlushing, NY 113551659337285
- Huajun Huang, M.D.Flushing, NY 113551033172143
- Sherman Klein, M.D.Flushing, NY 113551558340992
Common questions
What is Tien-Tsai Tsai, M.D.'s NPI number?
Tien-Tsai Tsai, M.D.'s National Provider Identifier (NPI) is 1558525196, issued on Jul 14, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Tien-Tsai Tsai, M.D. located?
The NPPES record lists a practice address at 13336 41St RD Ste 1, Flushing, NY, 11355. Phone: (347) 529-5303. Providers update this record themselves, so call before visiting.
How can I verify Tien-Tsai Tsai, M.D.'s license?
NPPES lists New York license number 272019, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Tien-Tsai Tsai, M.D. prescribe under Medicare Part D?
In 2024, Tien-Tsai Tsai, M.D. had 2,969 Medicare Part D claims for 89 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.