Yi Yi Tsai, MD
NPI 1790845832 · Internal Medicine Physician · Louisville, KY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Yi Yi Tsai, MD is a Internal Medicine Physician provider in Louisville, KY (NPI 1790845832).
Provider details
- NPI number
- 1790845832
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 28194 (KY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
697 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 160 | $84 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 134 | $118 |
| Telephone Medical Discussion With Physician, 5-10 Minutes99441 | 127 | $33 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 120 | $119 |
| Urine Microalbumin (protein) Analysis82044 | 90 | $6 |
| Administration of Influenza Virus VaccineG0008 | 35 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 86 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 250 | 80 |
| Amlodipine Besylate | 189 | 51 |
| Losartan Potassium | 179 | 51 |
| Levothyroxine Sodium | 178 | 50 |
| Simvastatin | 174 | 51 |
| Lisinopril | 162 | 48 |
| Montelukast Sodium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,614 across 41 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-12-11
- Last updated
- 2011-03-09
Frequently asked questions
- What is Yi Yi Tsai's NPI number?
- Yi Yi Tsai's National Provider Identifier (NPI) is 1790845832, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Yi Yi Tsai's specialty?
- Yi Yi Tsai is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Yi Yi Tsai located?
- Yi Yi Tsai's practice location on file with NPPES is 6400 Dutchmans Pkwy, Louisville, KY 40205.
- What is Yi Yi Tsai's phone number?
- The practice phone number listed in the NPPES registry for Yi Yi Tsai is (502) 897-1740.
- Does Yi Yi Tsai accept Medicare?
- Yi Yi Tsai is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Yi Yi Tsai's NPI active?
- Yes — Yi Yi Tsai's NPI (1790845832) is active in the NPPES registry as of the last update on 2011-03-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.