Marci E Messerschmidt , APNP
Nurse Practitioner • Appleton, WI
1501 S Madison St, Surgery Dept
Appleton, WI 549151846
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Marci Messerschmidt is listed in NPPES under Nurse Practitioner.
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NPI assigned on October 2, 2013; this date does not establish years in practice.
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Published CMS data list 41 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) — 18 prescription fills, including refills.
- Oxycodone Hcl — 12 prescription fills, including refills.
- Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) — 11 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table · Guide: How to read Medicare Part D prescriber data
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Fewer Part D prescriptions than 80% of clinicians listed under Nurse Practitioner in Appleton, WI (2024, 88 clinicians with data). Median for this group: 456. Middle half: 90 to 1,100.
Fewer Part D prescriptions than 85% of clinicians listed under Nurse Practitioner in Wisconsin (2024, 2,202 clinicians with data). Median for this group: 327. Middle half: 90 to 1,325.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part D prescriptions went from 17 in 2020 to 41 in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2020–2024.
Practice Location & Contact Primary Location
1501 S Madison St
Surgery Dept
Appleton, WI 549151846
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Ascension Medical Group-Fox Valley Wisconsin Inc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
2013
What Public CMS Data Show
Nurse Practitioner: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
41 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$226 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $69.60 across 2 records.
By nature of payment
- Food and Beverage: $69.60 across 2 records.
Reporting-company totals
- CONMED Corporation: $50.00 across 1 record.
- Acera Surgical, Inc.: $19.60 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
13 years (graduated 2013)
CMS Doctors and Clinicians data list 2013 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2013
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Marci Messerschmidt has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Marci Messerschmidt as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Appleton and Wisconsin
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
Fewer Part D prescriptions than 80% of clinicians listed under Nurse Practitioner in Appleton, WI (2024, 88 clinicians with data). Median for this group: 456. Middle half: 90 to 1,100.
Fewer Part D prescriptions than 85% of clinicians listed under Nurse Practitioner in Wisconsin (2024, 2,202 clinicians with data). Median for this group: 327. Middle half: 90 to 1,325.
Part D drug cost
A lower Part D drug cost than 85% of clinicians listed under Nurse Practitioner in Appleton, WI (2024, 88 clinicians with data). Median for this group: $12,751. Middle half: $697 to $103,869.
A lower Part D drug cost than 90% of clinicians listed under Nurse Practitioner in Wisconsin (2024, 2,202 clinicians with data). Median for this group: $17,831. Middle half: $1,191 to $147,074.
155 active clinicians are listed under Nurse Practitioner with a practice address in Appleton, WI (3,995 in Wisconsin).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Appleton
6.5% of these 155 clinicians have the CMS telehealth indicator.
60.6% of these 155 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part D prescriptions
Medicare Part D prescriptions went from 17 in 2020 to 41 in 2024.
- 2020: 17
- 2021: 26
- 2022: 31
- 2023: 38
- 2024: 41
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30-day fills
30-day fills went from 17 in 2020 to 41 in 2024.
- 2020: 17
- 2021: 26
- 2022: 31
- 2023: 38
- 2024: 41
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Part D drug cost
Part D drug cost went from $109 in 2020 to $226 in 2024.
- 2020: $109
- 2021: $75
- 2022: $78
- 2023: $96
- 2024: $226
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Industry payments (Open Payments)
Industry payments (Open Payments) decreased 97% from $2,059.63 in 2023 to $69.60 in 2025.
- 2023: $2,059.63
- 2025: $69.60
Sources: CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $69.60.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| CONMED Corporation |
Food and Beverage
In-kind items and services
|
AIRSEAL | General | $50.00 |
| Acera Surgical, Inc. |
Food and Beverage
In-kind items and services
|
Restrata Wound Matrix | General | $19.60 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 18 | 45 | $103.18 | 17 |
| Oxycodone Hcl | Oxycodone Hcl | 12 | 24 | $21.04 | 12 |
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 11 | 112 | $101.64 | 11 |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 363L00000X
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NURSE PRACTITIONER
I20131112000723
WI
3870729320
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Ascension Medical Group-Fox Valley Wisconsin Inc
1501 S Madison St, Appleton, WI 549151846
Phone: 9207382000
Ascension Medical Group-Fox Valley Wisconsin Inc
2700 W 9th Ave, Oshkosh, WI 549047247
Ascension Medical Group-Fox Valley Wisconsin Inc
500 S Oakwood Rd, Oshkosh, WI 549047944
Phone: 9202232000
Ascension Medical Group-Fox Valley Wisconsin Inc
500 S Oakwood Rd, Oshkosh, WI 549047944
Phone: 9202233000
Ascension Medical Group-Fox Valley Wisconsin Inc
1506 S Oneida St, Appleton, WI 549151305
Phone: 9207382000
Ascension Medical Group-Fox Valley Wisconsin Inc
1531 S Madison St, Appleton, WI 549151800
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Surgery
Doctor of Medicine (M.D.)
Surgery
Doctor of Medicine (M.D.)
Physician Assistant - Surgical
Career & Practice History
NPI enumerated October 02, 2013.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Nurse Practitioners in Appleton
- Angela Johnson, APNP
- Roxanne Radich, APNP
- Kim Mittelstadt, APNP
- Christine Arendt, NP
- Madison Stern, NP
- Denise Klubertanz-Berge, NP
Mailing Address
1501 S Madison St, Surgery Dept
Appleton, WI 549151846
Phone: 9207304435