David J. Simenstad, MD
Orthopaedic Surgery Physician · Marshfield, WI
David J. Simenstad, MD is an orthopaedic surgery physician with a practice address in Marshfield, Wisconsin, and NPI 1033217864, issued on Sep 20, 2006. Check the license (Wisconsin 35433, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- David J. Simenstad
- Credential
- MD
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License number
- 35433 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1000 N Oak Ave, Marshfield, WI 54449
- Phone
- (715) 387-5511
- Enumerated
- Sep 20, 2006
- Record last updated
- May 27, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicaid ID
- 32050200 WI
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 656 in Wisconsin → Look up another NPI →
Also registered at 1000 N Oak Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify David J. Simenstad in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 35433Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024
97 Medicare Part D claims for 67 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Amoxicillin78 claims
- Azithromycin13 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): 78.9 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).
David J. Simenstad among 656 orthopaedic surgery physician records in Wisconsin
David J. Simenstad, MD 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 2006, is newer than 15% of them.
- NPI issued2006 · 15% of these records are older, 41% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileNo · 61% of these records are
- Record last updated2011 · 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.
All 656 in Wisconsin → Every provider in Marshfield → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Robert Cagle, M.D.Marshfield, WI 544491063707313
- Darren Corteen, M.D.Marshfield, WI 544491649297482
- Tyler Dahl, M.D.Marshfield, WI 544491235496787
- Owen Keenan, MDMarshfield, WI 544491649378407
- Jacob Lonsdale, M.D.Marshfield, WI 544491053505958
- John Milbauer, MDMarshfield, WI 544491346348190
- David Polga, MDMarshfield, WI 544491770599490
- Rachel Randall, MDMarshfield, WI 544491457694309
Common questions
What is David J. Simenstad, MD's NPI number?
David J. Simenstad, MD's National Provider Identifier (NPI) is 1033217864, issued on Sep 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David J. Simenstad, MD located?
The NPPES record lists a practice address at 1000 N Oak Ave, Marshfield, WI, 54449. Phone: (715) 387-5511. Providers update this record themselves, so call before visiting.
How can I verify David J. Simenstad, MD's license?
NPPES lists Wisconsin license number 35433, 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 David J. Simenstad, MD prescribe under Medicare Part D?
In 2024, David J. Simenstad, MD had 97 Medicare Part D claims for 67 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions only.
What is David J. Simenstad, MD's MIPS final score?
The 2023 MIPS final score is 78.9 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.