Louis Fernandez Chai, M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Philadelphia, PA
Louis Fernandez Chai, M.D. is a thoracic surgery (cardiothoracic vascular surgery) physician with a practice address in Philadelphia, Pennsylvania, and NPI 1164870689, issued on May 25, 2016. Check the license (Pennsylvania MD465049, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Louis Fernandez Chai
- Credential
- M.D.
- Primary taxonomy
- Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician 208G00000X
- License number
- MD465049 PA
Self-reported in NPPES; status is on the state search - Practice location
- 333 Cottman Ave, Philadelphia, PA 19111
- Phone
- (215) 728-6900
- Enumerated
- May 25, 2016
- Record last updated
- May 29, 2025
- Fax
- (215) 728-2773
- Medicare enrollment
- Enrolled (PECOS I20250611000093); accepts Medicare assignment
- Medical or professional school
- Rutgers R W Johnson Medical School (Cam/New Bruns/Pisc), 2016
- Entity
- Type 1 · individual
8 nearest thoracic surgery (cardiothoracic vascular surgery) physician records → All 377 in Pennsylvania → Look up another NPI →
Also registered at 333 Cottman Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Philip Abbosh, MDPHDUrology Physician1871749424
- Andrea AbbottDiagnostic Radiology Physician1316268444
- Jesty Abraham, DODiagnostic Radiology Physician1417118373
- Allison Aggon, D.O.Surgery Physician1972759900
- Tahseen Al-Saleem, M.D.Anatomic Pathology & Clinical Pathology Physician1962474056
- Md Usman Ali, M.D.Internal Medicine Physician1619316882
Verify Louis Fernandez Chai in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD465049Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
45% fewer Medicare Part D claims than the average thoracic surgery (cardiothoracic vascular surgery) physician in 2024
56 Medicare Part D claims for 14 beneficiaries, against an average of 101 among the 2,587 providers of this specialty who prescribed in Part D. 13 claims were for opioids.
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.
Industry payments in 2024: $211.47
2 payments; by number, the most common kind was food and beverage; the largest payer was Atricure, Inc. The 4,047 providers of this specialty with any payment received $7,828.84 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Temple Faculty Practice Plan IncPhiladelphia, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Louis Fernandez Chai among 377 thoracic surgery (cardiothoracic vascular surgery) physician records in Pennsylvania
Louis Fernandez Chai, M.D. is one of 377 thoracic surgery (cardiothoracic vascular surgery) physician records with a practice address in Pennsylvania. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 84% of them.
- NPI issued2016 · 84% of these records are older, 13% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2016 · median 1998 among the 223 with a school on file
- Record last updated2025 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208G00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician providers in Pennsylvania
There are 377 thoracic surgery (cardiothoracic vascular surgery) physician records in Pennsylvania.
All 377 in Pennsylvania → Every provider in Philadelphia → Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician nationwide →
The 8 thoracic surgery (cardiothoracic vascular surgery) physician records with the nearest ZIP codes
- Lisa Bevilacqua, MDPhiladelphia, PA 191111659868651
- Stacey Su, MDPhiladelphia, PA 191111801014493
- John Heim, M.D.Philadelphia, PA 191141538117825
- John Pym, MB, BSPhiladelphia, PA 191141669558748
- Robert Quigley, M.D.Philadelphia, PA 191141386682136
- Cecillia ChinPhiladelphia, PA 191071013256684
- Scott Cowan, MDPhiladelphia, PA 191071437219987
- John Entwistle, MDPhiladelphia, PA 191071831132398
Common questions
What is Louis Fernandez Chai, M.D.'s NPI number?
Louis Fernandez Chai, M.D.'s National Provider Identifier (NPI) is 1164870689, issued on May 25, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Louis Fernandez Chai, M.D. located?
The NPPES record lists a practice address at 333 Cottman Ave, Philadelphia, PA, 19111. Phone: (215) 728-6900. Providers update this record themselves, so call before visiting.
How can I verify Louis Fernandez Chai, M.D.'s license?
NPPES lists Pennsylvania license number MD465049, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Louis Fernandez Chai, M.D. prescribe under Medicare Part D?
In 2024, Louis Fernandez Chai, M.D. had 56 Medicare Part D claims for 14 beneficiaries; the average among thoracic surgery (cardiothoracic vascular surgery) physician prescribers was 101. 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.