What is Felix Tsai's NPI number?

Felix Tsai's National Provider Identifier (NPI) is 1972703015, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Felix Tsai's specialty?

Felix Tsai is listed in the NPPES registry with a primary specialty of Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (Allopathic & Osteopathic Physicians).

Where is Felix Tsai located?

Felix Tsai's practice location on file with NPPES is 411 E Chestnut St, Louisville, KY 40202-1713.

What is Felix Tsai's phone number?

The practice phone number listed in the NPPES registry for Felix Tsai is (502) 588-7641.

Is Felix Tsai's NPI active?

Yes — Felix Tsai's NPI (1972703015) is active in the NPPES registry as of the last update on 2026-03-26.

IndividualActive

Felix Tsai, M.D.

NPI 1972703015 · Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Louisville, KY

Felix Tsai, M.D. is a Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician provider in Louisville, KY (NPI 1972703015).

Provider details

NPI number: 1972703015
Entity type: Individual
Primary specialty: Thoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Male
Sole proprietor: No
License: 61904 (KY)

Specialties & taxonomies

Thoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianPrimary208G00000XLicense 61904 (KY)
Allopathic & Osteopathic Physicians
Pediatric Cardiology Physician2080P0202XLicense N1191 (TX)
Allopathic & Osteopathic Physicians
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician208G00000XLicense 0101249419 (VA)
Allopathic & Osteopathic Physicians
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician208G00000XLicense N1191 (TX)
Allopathic & Osteopathic Physicians
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician208G00000XLicense FTL 41883 (TX)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(89/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
18 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

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.

Practice location

411 E Chestnut St

Louisville, KY 40202-1713

Phone: (502) 588-7641

Fax: (502) 588-7700

Street-level locationGet directions

More KY providers

Mailing address

Po Box 776879

Chicago, IL 60677-6879

Enumerated: 2007-07-18
Last updated: 2026-03-26
Certified: 2026-03-26

Frequently asked questions

What is Felix Tsai's NPI number?: Felix Tsai's National Provider Identifier (NPI) is 1972703015, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Felix Tsai's specialty?: Felix Tsai is listed in the NPPES registry with a primary specialty of Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (Allopathic & Osteopathic Physicians).
Where is Felix Tsai located?: Felix Tsai's practice location on file with NPPES is 411 E Chestnut St, Louisville, KY 40202-1713.
What is Felix Tsai's phone number?: The practice phone number listed in the NPPES registry for Felix Tsai is (502) 588-7641.
Is Felix Tsai's NPI active?: Yes — Felix Tsai's NPI (1972703015) is active in the NPPES registry as of the last update on 2026-03-26.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.