Joan C. Hermsen, APNP
- Medicare patients, 2024
- 117
- Part D claims, 2024
- 1,007
- MIPS score, 2024
- 99
- Hospital affiliations
- 4
- Industry payments
- $102
- Practice address
- 3400 Ministry Parkway, Weston, WI 54476
- Practice phone
- Call (715) 393-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Joan Hermsen'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.
Joan C. Hermsen is a nurse practitioner in Schofield, Wisconsin
Joan Hermsen practices at Marshfield Medical Center - Weston in Weston, Wisconsin, part of Sanford Health.
Joan Hermsen's NPI, 1073572004, was assigned on March 20, 2006. Joan Hermsen holds Wisconsin license 1363.
- NPI
- 1073572004NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2062544653
- NPI enumeration date
- March 20, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (715) 393-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Joan C. Hermsen practices at Marshfield Medical Center - Weston in Weston, Wisconsin
Joan Hermsen's primary practice is Marshfield Medical Center - Weston, at 3400 Ministry Parkway, Weston, WI 54476 in Marathon County. The practice phone is (715) 393-3000.
- Marshfield Medical Center - Weston3400 Ministry Parkway, Weston, WI 54476 · Marathon CountyPhone(715) 393-3000
Source: Dmand AI Affiliation Data
Joan C. Hermsen is affiliated with 4 sites of care and 8 medical groups
Joan Hermsen's primary practice is Marshfield Medical Center - Weston in Weston, Wisconsin, part of Sanford Health. Joan Hermsen is also affiliated with University Hospital. The medical group on file is Aurora Medical Group. Dmand AI also links Joan Hermsen to 2 more hospitals and 7 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Joan C. Hermsen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Joan Hermsen practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Marshfield Medical Center - Weston | Available with a free account |
| +3 more sites and 7 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Joan C. Hermsen is one of 3,198 nurse practitioners in Wisconsin
Nurse practitioner is Joan Hermsen's primary specialty in the NPI Registry, under taxonomy code 363L00000X. Joan Hermsen is licensed in Wisconsin.
Specialties and state licenses
- Nurse practitioner, WisconsinPrimary
Nurse practitioners near Joan Hermsen
Counts of nurse practitioners 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
Joan C. Hermsen treated 117 Medicare patients in 2024, average age 73
CMS counts 117 Medicare patients who saw Joan Hermsen in 2024. The largest group is 65 to 74, with 53 patients. 75% of them have heart failure, and 75% have high blood pressure. 12% are also on Medicaid. Their average risk score is 2.47, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Joan Hermsen's median patient age at 75, with 48% women.
Joan Hermsen's Medicare patients by age, 2024
Joan Hermsen's Medicare patients by sex, 2024
- Women4236%
- Men7564%
Chronic conditions among Joan Hermsen's Medicare patients, 2024
- Heart failure75%
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease75%
- Atrial fibrillation65%
- Chronic kidney disease62%
- Diabetes49%
- Arthritis43%
Share of Medicare patients with each condition. A patient can have several.
Joan Hermsen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women48%
- Men52%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Joan C. Hermsen wrote 1,007 Medicare Part D claims in 2024
In 2024, Joan Hermsen wrote 1,007 Medicare Part D claims for 182 patients. 76% of them were for generic drugs.
Joan Hermsen's Part D claims by kind of drug, 2024
- Generic765 claims76%
- Brand-name242 claims24%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Joan C. Hermsen scored 99 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 99 out of 100 for Joan Hermsen for performance year 2024, reported through an alternative payment model (APM). Joan Hermsen accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Joan Hermsen's MIPS scores, performance year 2024
- 99of 100Final score
- 85.4of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Joan C. Hermsen received $102 in industry payments in 2025
CMS Open Payments shows 1 general payment to Joan Hermsen from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. United Therapeutics Corporation paid the most, $102.
Companies that paid Joan Hermsen the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Joan C. Hermsen'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 DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 Joan C. Hermsen
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Joan C. Hermsen's NPI number?
Joan C. Hermsen's NPI number is 1073572004. It was assigned on March 20, 2006, and it is active in the NPI Registry.
What does Joan C. Hermsen specialize in?
Joan C. Hermsen is a nurse practitioner in Schofield, Wisconsin. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).
Where does Joan C. Hermsen practice?
Joan Hermsen practices at 3400 Ministry Parkway, Weston, WI 54476. Joan Hermsen's primary practice is Marshfield Medical Center - Weston in Weston, Wisconsin, part of Sanford Health. Dmand AI also links Joan Hermsen to 2 hospitals and 7 medical groups.
What is Joan C. Hermsen's office phone number?
The practice phone on file for Joan Hermsen is (715) 393-3000.
What is Joan C. Hermsen's medical license number?
Joan Hermsen holds Wisconsin license 1363.
Which hospitals is Joan C. Hermsen affiliated with?
Joan Hermsen practices at Marshfield Medical Center - Weston in Weston, Wisconsin. Joan Hermsen is also affiliated with University Hospital. Dmand AI links Joan Hermsen to 2 more hospitals.
What medical group is Joan C. Hermsen part of?
Joan Hermsen is linked to Aurora Medical Group. Dmand AI links Joan Hermsen to 7 more medical groups.
Does Joan C. Hermsen accept Medicare?
Yes. CMS lists Joan Hermsen as accepting Medicare assignment.
What is Joan C. Hermsen's MIPS score?
Joan Hermsen's MIPS final score for performance year 2024 is 99 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Joan C. Hermsen see?
CMS counts 117 Medicare patients who saw Joan Hermsen in 2024, with an average age of 73.
Has Joan C. Hermsen received payments from drug or device companies?
CMS Open Payments shows $102 in general payments to Joan Hermsen from 1 company from 2025 to 2025. The largest total came from United Therapeutics Corporation.
How long has Joan C. Hermsen been practicing?
Joan Hermsen graduated from medical school in 2020, 6 years ago.
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