NPPES file of Aug 9, 2026

Marc-Antoine Tremblay, M.D.

Orthopaedic Surgery Physician · West Allis, WI

Marc-Antoine Tremblay, M.D. is an orthopaedic surgery physician with a practice address in West Allis, Wisconsin, and NPI 1558892232, issued on Mar 23, 2017. Check the license (Wisconsin 70073, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1558892232
Name
Marc-Antoine Tremblay
Credential
M.D.
Primary taxonomy
Orthopaedic Surgery Physician 207X00000X
License number
70073 WI
Self-reported in NPPES; status is on the state search
Practice location
2424 S 90TH St Ste 500, West Allis, WI 53227
Phone
(414) 321-2255
Enumerated
Mar 23, 2017
Record last updated
Oct 11, 2023
Medicaid ID
100082222 WI
Medicare enrollment
Enrolled (PECOS I20230726003595); accepts Medicare assignment
Medical or professional school
Virginia Commonwealth University, School Of Medicine, 2017
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 2424 S 90TH St Ste 500

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Lisa Sienkiewicz, M.D.Orthopaedic Surgery Physician1942566906
  2. Christine Stueland, CCC-SLPSpeech-Language Pathologist1306518717
  3. Andrew Wieting, DPTPhysical Therapist1740800606

Verify Marc-Antoine Tremblay in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 70073
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Wisconsin license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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54% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024

159 Medicare Part D claims for 72 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. 23 claims were for opioids.

  1. Marc-Antoine Tremblay159
  2. Specialty average346

Most prescribed

  1. Meloxicam30 claims
  2. Gabapentin22 claims
  3. Celecoxib17 claims
  4. Methylprednisolone15 claims
  5. Tizanidine Hcl15 claims
  6. Oxycodone Hcl12 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.

Bills Medicare through one group practice

  1. Aurora Advanced Healthcare, Inc.West Allis, WI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Marc-Antoine Tremblay among 656 orthopaedic surgery physician records in Wisconsin

Marc-Antoine Tremblay, M.D. is one of 656 orthopaedic surgery physician records with a practice address in Wisconsin. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 87% of them.

  • NPI issued2017 · 87% of these records are older, 10% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 61% of these records are
  • Graduated2017 · median 2006 among the 401 with a school on file
  • Record last updated2023 · 50% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Orthopaedic Surgery Physician providers in Wisconsin

There are 656 orthopaedic surgery physician records in Wisconsin.

The 8 orthopaedic surgery physician records with the nearest ZIP codes

  1. Steven Anderson, M.D.West Allis, WI 532271285648691
  2. Alvin Krug, M.D.West Allis, WI 532271780698159
  3. Jeffrey Larson, MDWest Allis, WI 532271124018809
  4. Justin Peterson, D.O.West Allis, WI 532271033558010
  5. Lisa Sienkiewicz, M.D.West Allis, WI 532271942566906
  6. Michael Stoesz, MDWest Allis, WI 532271689833774
  7. Lee Tyne, MDWest Allis, WI 532271922098714
  8. Jake Bauwens, M.DWauwatosa, WI 532261639564586

Common questions

What is Marc-Antoine Tremblay, M.D.'s NPI number?

Marc-Antoine Tremblay, M.D.'s National Provider Identifier (NPI) is 1558892232, issued on Mar 23, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Marc-Antoine Tremblay, M.D. located?

The NPPES record lists a practice address at 2424 S 90TH St Ste 500, West Allis, WI, 53227. Phone: (414) 321-2255. Providers update this record themselves, so call before visiting.

How can I verify Marc-Antoine Tremblay, M.D.'s license?

NPPES lists Wisconsin license number 70073, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Marc-Antoine Tremblay, M.D. prescribe under Medicare Part D?

In 2024, Marc-Antoine Tremblay, M.D. had 159 Medicare Part D claims for 72 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. 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.