Dr. David J. Simenstad, MD
- Medicare services, 2023
- 153
- Part D claims, 2024
- 97
- MIPS score, 2024
- 81
- Industry payments
- $66
- Affiliated sites
- 3
- Practice address
- 1000 N Oak Ave, Marshfield, WI 54449
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Marshfield Center Ambulatory Surgical Center - HOPD
Acute Care Hospital outpatient department · Marshfield, Wisconsin
Find Dr. Simenstad's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. David J. Simenstad is an orthopedic surgeon in Marshfield, Wisconsin
Dr. Simenstad practices at Marshfield Center Ambulatory Surgical Center - HOPD in Marshfield, Wisconsin.
Dr. Simenstad's NPI, 1033217864, was assigned on September 20, 2006. Dr. Simenstad graduated from University of Wisconsin School of Medicine in 1986. Dr. Simenstad holds Wisconsin license 35433.
- NPI
- 1033217864NPI Registry (opens in a new tab)
- NPI enumeration date
- September 20, 2006
- NPI status
- Active
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 66
- Medical school graduation
- 1986
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. David J. Simenstad practices at Marshfield Center Ambulatory Surgical Center - HOPD in Marshfield, Wisconsin
Dr. Simenstad's primary practice is Marshfield Center Ambulatory Surgical Center - HOPD, at 1000 N Oak Ave, Marshfield, WI 54449.
- Marshfield Center Ambulatory Surgical Center - HOPD1000 N Oak Ave, Marshfield, WI 54449
Source: Dmand AI Affiliation Data
Dr. David J. Simenstad is affiliated with 3 sites of care and 2 medical groups
Dr. Simenstad's primary practice is Marshfield Center Ambulatory Surgical Center - HOPD in Marshfield, Wisconsin. The medical group on file is Marshfield Clinic Health System. Dmand AI also links Dr. Simenstad to 2 more group practices and clinics and 1 medical group, each named with a free account. Dr. Simenstad's employer is on file too: a hospital.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. David J. Simenstad's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Simenstad practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Marshfield Center Ambulatory Surgical Center - HOPD | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David J. Simenstad is one of 526 orthopedic surgeons in Wisconsin
Orthopaedic surgery is Dr. Simenstad's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dr. Simenstad is licensed in Wisconsin.
Specialties and state licenses
- Orthopaedic surgery, WisconsinPrimary
Orthopedic surgeons near Dr. Simenstad
Counts of orthopedic surgeons with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. David J. Simenstad billed Medicare for 153 services in 2023
CMS data shows 153 Medicare services from Dr. Simenstad across 5 procedure codes in 2023. Medicare paid $58,950 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Simenstad's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 2142023: 9755%
- Surgery
- 2022: 1072023: 5648%
Dr. Simenstad compared with the Wisconsin median for orthopedic surgeons, 2023
- Dr. Simenstad
- Wisconsin median
- Medicare services
- 153vs 43965% below
- Part D claims
- 91vs 7030% above
Medians across 543 orthopedic surgeons in Wisconsin with Dmand AI profiles that report each measure.
Dr. Simenstad's most billed Medicare procedure codes, 2023
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Simenstad and other orthopedic surgeons in Wisconsin.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David J. Simenstad's patients have a median age of 70
Across all payers, Dmand AI patient panel data puts Dr. Simenstad's median patient age at 70, with 61% women.
Dr. Simenstad's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women61%
- Men39%
Source: Dmand AI Patient Panel Data
Dr. David J. Simenstad wrote 97 Medicare Part D claims in 2024
In 2024, Dr. Simenstad wrote 97 Medicare Part D claims for 67 patients. 100% of them were for generic drugs. CMS names the drug for 91 of them, across 2 drugs with 11 or more claims each, at $131 in total drug cost. In 2023, CMS named 369 claims across 3 drugs.
Dr. Simenstad's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Simenstad's Part D claims, 2024
- Antibiotics100%97 of 97 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3692024: 9175%
Drugs named by CMS: 2 in 2024, 3 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. David J. Simenstad scored 81 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 81 out of 100 for Dr. Simenstad for performance year 2024, reported as part of a group.
Dr. Simenstad's MIPS scores, performance year 2024
- 81of 100Final score
- 55.5of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 71of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. David J. Simenstad received $66 in industry payments in 2016
CMS Open Payments shows 1 general payment to Dr. Simenstad from 1 drug or device company in 2016. Food and beverage make up the largest share, 100% of the total. Stryker Corporation paid the most, $66.
Companies that paid Dr. Simenstad the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. David J. Simenstad graduated from University of Wisconsin School of Medicine
Dr. Simenstad graduated from University of Wisconsin School of Medicine in 1986.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. David J. Simenstad's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. David J. Simenstad
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. David J. Simenstad's NPI number?
Dr. David J. Simenstad's NPI number is 1033217864. It was assigned on September 20, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. David J. Simenstad?
Dr. David J. Simenstad is an orthopedic surgeon in Marshfield, Wisconsin. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).
Where does Dr. David J. Simenstad practice?
Dr. Simenstad practices at 1000 N Oak Ave, Marshfield, WI 54449. Dr. Simenstad's primary practice is Marshfield Center Ambulatory Surgical Center - HOPD in Marshfield, Wisconsin. Dmand AI also links Dr. Simenstad to 2 group practices and clinics and 1 medical group.
What is Dr. David J. Simenstad's medical license number?
Dr. Simenstad holds Wisconsin license 35433.
What medical group is Dr. David J. Simenstad part of?
Dr. Simenstad is linked to Marshfield Clinic Health System. Dmand AI links Dr. Simenstad to 1 more medical group.
Does Dr. David J. Simenstad accept Medicare?
Yes. CMS data shows Dr. Simenstad billed Medicare for 153 services in 2023.
What is Dr. David J. Simenstad's MIPS score?
Dr. Simenstad's MIPS final score for performance year 2024 is 81 out of 100, reported as part of a group.
What services does Dr. David J. Simenstad bill to Medicare?
In 2023, Dr. Simenstad's most billed Medicare services were office visit, established patient (99214), surgery: bones and joints (27447) and office visit, new patient (99204).
Where did Dr. David J. Simenstad go to medical school?
Dr. Simenstad graduated from University of Wisconsin School of Medicine in 1986.
What drugs does Dr. David J. Simenstad prescribe most?
In 2024 Medicare Part D data, Dr. Simenstad's most prescribed drugs by claims were Amoxicillin and Azithromycin.
Has Dr. David J. Simenstad received payments from drug or device companies?
CMS Open Payments shows $66 in general payments to Dr. Simenstad from 1 company from 2016 to 2016. The largest total came from Stryker Corporation.
How long has Dr. David J. Simenstad been practicing?
Dr. Simenstad graduated from medical school in 1986, 40 years ago.
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