Tien-Tsai Tsai, M.D.
NPI 1558525196 · Internal Medicine Physician · Flushing, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tien-Tsai Tsai, M.D. is a Internal Medicine Physician provider in Flushing, NY (NPI 1558525196).
Provider details
- NPI number
- 1558525196
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 272019 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
2,645 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 1,588 | $82 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 271 | $119 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 218 | $188 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 195 | $123 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 129 | $105 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 73 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 232 | 30 |
| Atorvastatin Calcium | 227 | 27 |
| Tamsulosin Hcl | 109 | 19 |
| Hydralazine Hcl | 89 | — |
| Sitagliptin Phosphatebrand: Januvia | 86 | — |
| Rivaroxabanbrand: Xarelto | 76 | — |
| Carvedilol | 68 |
Practice location
Mailing address
Additional practice locations (1)
- 41 Mott StFloor 5New York, NY 10013-5041Phone: (646) 692-9037Fax: (646) 692-9035
Registry dates
- Enumerated
- 2008-07-14
- Last updated
- 2022-07-21
Frequently asked questions
- What is Tien-Tsai Tsai's NPI number?
- Tien-Tsai Tsai's National Provider Identifier (NPI) is 1558525196, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tien-Tsai Tsai's specialty?
- Tien-Tsai Tsai is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Tien-Tsai Tsai located?
- Tien-Tsai Tsai's practice location on file with NPPES is 13336 41st Rd Ste 1, Flushing, NY 11355-3666.
- What is Tien-Tsai Tsai's phone number?
- The practice phone number listed in the NPPES registry for Tien-Tsai Tsai is (347) 529-5303.
- Does Tien-Tsai Tsai accept Medicare?
- Tien-Tsai Tsai is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tien-Tsai Tsai's NPI active?
- Yes — Tien-Tsai Tsai's NPI (1558525196) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.