Louis Philippe Tremblay, MD
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Grand Rapids, MI
Louis Philippe Tremblay, MD is a thoracic surgery (cardiothoracic vascular surgery) physician with a practice address in Grand Rapids, Michigan, and NPI 1255005666, issued on Aug 9, 2021. Check the license (Michigan 4301506551, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Louis Philippe Tremblay
- Credential
- MD
- Primary taxonomy
- Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician 208G00000X
- License number
- 4301506551 MI
Self-reported in NPPES; status is on the state search - Practice location
- 221 Michigan St NE Ste 300, Grand Rapids, MI 49503
- Phone
- (616) 459-7258
- Enumerated
- Aug 9, 2021
- Record last updated
- Aug 2, 2024
- Entity
- Type 1 · individual
8 nearest thoracic surgery (cardiothoracic vascular surgery) physician records → All 208 in Michigan → Look up another NPI →
Also registered at 221 Michigan St NE Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Andrew Albert, MDOrthopaedic Surgery Physician1184285983
- Bryan Anderson, PACSurgical Physician Assistant1023417581
- Elizabeth Balaj, PA-CPhysician Assistant1104659051
- Mallorie Bleka, FNP, DNPFamily Nurse Practitioner1801388277
- Laura Bose, PA-CSurgical Physician Assistant1326448341
- Sara Brechting, PA-CPhysician Assistant1215220009
Verify Louis Philippe Tremblay in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301506551Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average thoracic surgery (cardiothoracic vascular surgery) physician in 2024
16 Medicare Part D claims, against an average of 101 among the 2,587 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
The MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $796.07
2 payments; by number, the most common kind was food and beverage; the largest payer was Abiomed. 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.
Louis Philippe Tremblay among 208 thoracic surgery (cardiothoracic vascular surgery) physician records in Michigan
Louis Philippe Tremblay, MD is one of 208 thoracic surgery (cardiothoracic vascular surgery) physician records with a practice address in Michigan. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 98% of them.
- NPI issued2021 · 98% of these records are older, 1% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 65% of these records are
- Record last updated2024 · 52% 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 Michigan 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 Michigan
There are 208 thoracic surgery (cardiothoracic vascular surgery) physician records in Michigan.
All 208 in Michigan → Every provider in Grand Rapids → Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician nationwide →
The 8 thoracic surgery (cardiothoracic vascular surgery) physician records with the nearest ZIP codes
- Osama Eltayeb, M.D.Grand Rapids, MI 495031336111681
- Justin Fanning, MDGrand Rapids, MI 495031700908522
- James Hammel, MDGrand Rapids, MI 495031063461317
- John Heiser, MDGrand Rapids, MI 495031174596639
- Neal Hillman, MDGrand Rapids, MI 495031073583126
- Robert Hooker, MDGrand Rapids, MI 495031265405765
- Marzia Leacche, M.D.Grand Rapids, MI 495031154478980
- Edward Murphy, MDGrand Rapids, MI 495031124090808
Common questions
What is Louis Philippe Tremblay, MD's NPI number?
Louis Philippe Tremblay, MD's National Provider Identifier (NPI) is 1255005666, issued on Aug 9, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Louis Philippe Tremblay, MD located?
The NPPES record lists a practice address at 221 Michigan St NE Ste 300, Grand Rapids, MI, 49503. Phone: (616) 459-7258. Providers update this record themselves, so call before visiting.
How can I verify Louis Philippe Tremblay, MD's license?
NPPES lists Michigan license number 4301506551, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Louis Philippe Tremblay, MD prescribe under Medicare Part D?
In 2024, Louis Philippe Tremblay, MD had 16 Medicare Part D claims; the average among thoracic surgery (cardiothoracic vascular surgery) physician prescribers was 101. Part D covers Medicare prescriptions only.
What is Louis Philippe Tremblay, MD's MIPS final score?
The 2023 MIPS final score is 100 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.