Michael R. Viau, MD
Orthopaedic Surgery Physician · Mansfield, OH
Michael R. Viau, MD is an orthopaedic surgery physician with a practice address in Mansfield, Ohio, and NPI 1134180722, issued on Mar 31, 2006. Check the license (Ohio 35050088V, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Michael R. Viau
- Credential
- MD
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License number
- 35050088V OH
Self-reported in NPPES; status is on the state search - Practice location
- 335 Glessner Ave, Mansfield, OH 44903
- Phone
- (419) 756-8899
- Enumerated
- Mar 31, 2006
- Record last updated
- Jan 25, 2022
- Medicaid ID
- 0550943 OH
- Medicare enrollment
- Enrolled (PECOS I20101008000784); accepts Medicare assignment
- Medical or professional school
- Wayne State University School Of Medicine, 1979
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 921 in Ohio → Look up another NPI →
Also registered at 335 Glessner Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Maryam Ahmed, MDPulmonary Disease Physician1386297265
Verify Michael R. Viau in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35050088VCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.1 times the Medicare Part D claims of the average orthopaedic surgery physician in 2024
1,081 Medicare Part D claims for 311 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. 381 claims were for opioids.
Most prescribed
- Meloxicam419 claims
- Oxycodone-Acetaminophen257 claims
- Tramadol Hcl104 claims
- Cyclobenzaprine Hcl53 claims
- Gabapentin48 claims
- Methylprednisolone48 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 practice group's MIPS final score for 2023 (Medicare payment program): 81.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Ohiohealth CorporationMansfield, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael R. Viau among 921 orthopaedic surgery physician records in Ohio
Michael R. Viau, MD is one of 921 orthopaedic surgery physician records with a practice address in Ohio. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 21% of them.
- NPI issued2006 · 21% of these records are older, 46% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1979 · median 2004 among the 579 with a school on file
- Record last updated2022 · 59% 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 Ohio 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 Ohio
There are 921 orthopaedic surgery physician records in Ohio.
All 921 in Ohio → Every provider in Mansfield → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Joseph Guth, M.D.Shelby, OH 448751417918038
- Mark Leeson, MDShelby, OH 448751740268408
- James Berry, MDSandusky, OH 448701831170778
- Colleen Calvey, M.D.Sandusky, OH 448701477787596
- Robert Carlisle, M.D.Sandusky, OH 448701225410905
- Michael Felter, MDSandusky, OH 448701629059597
- Justin Kelley, D.O.Sandusky, OH 448701205256187
- Thomas Olexa, MDSandusky, OH 448701144201088
Common questions
What is Michael R. Viau, MD's NPI number?
Michael R. Viau, MD's National Provider Identifier (NPI) is 1134180722, issued on Mar 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael R. Viau, MD located?
The NPPES record lists a practice address at 335 Glessner Ave, Mansfield, OH, 44903. Phone: (419) 756-8899. Providers update this record themselves, so call before visiting.
How can I verify Michael R. Viau, MD's license?
NPPES lists Ohio license number 35050088V, as entered by the provider. Search the State Medical Board of Ohio at https://elicense.ohio.gov/oh_verifylicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael R. Viau, MD prescribe under Medicare Part D?
In 2024, Michael R. Viau, MD had 1,081 Medicare Part D claims for 311 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions only.
What is Michael R. Viau, MD's MIPS final score?
The 2023 MIPS final score is 81.3 of 100, reported for the practice group. 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.