Ann M Mayer , NP
Nurse Practitioner โข Oshkosh, WI
855 N Westhaven Dr
Oshkosh, WI 549047668
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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NPI assigned on July 12, 2019; this date does not establish years in practice.
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Published CMS data list 382 Original Medicare Part B services in 2023.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2023. Published rows only; this is not a quality measure.
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Published Part B service records, 2023:
- 80048 โ Blood test, basic group of blood chemicals (calcium, total): 82 service units.
- 93294 โ Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days: 75 service units.
- 93296 โ Evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days: 74 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2023. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2022 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2023). CPT notice
See all 9 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 415 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Metoprolol Succinate โ 57 prescription fills, including refills.
- Atorvastatin Calcium โ 43 prescription fills, including refills.
- Clopidogrel (Clopidogrel Bisulfate) โ 42 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 15 records in the table ยท Guide: How to read Medicare Part D prescriber data
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Close to the middle for Part D prescriptions among clinicians listed under Nurse Practitioner in Oshkosh, WI (2024, 62 clinicians with data). Median for this group: 391. Middle half: 147 to 1,290.
Close to the middle for Part D prescriptions among 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 โ by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 49 in 2020 to 382 in 2023.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2023.
Practice Location & Contact Primary Location
855 N Westhaven Dr
Oshkosh, WI 549047668
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 1 additional practice-address record in Appleton, WI. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
CMS Doctors and Clinicians lists 1 group name: Aurora Medical Group, 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
2018
What Public CMS Data Show
Nurse Practitioner: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $8,249 in 2023
The total amount Medicare approved for these services in 2023. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2023.
Paid by Medicare
About $6,586 in 2023
The part of the Medicare-allowed amount that Medicare itself paid in 2023, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2023.
30-day fills
858 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
$38,936 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 โ by Provider and Drug, 2024.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $24.17 in 2024
Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.
General: payments not tied to research, such as meals, travel, consulting or speaking fees.
A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.
Source: CMS Open Payments, program year 2024.
Years since graduation
8 years (graduated 2018)
CMS Doctors and Clinicians data list 2018 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
2019
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, โDoes your provider accept Medicare as full payment?โ
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)
Ann Mayer 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 Ann Mayer 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 Oshkosh and Wisconsin
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Nurse Practitioner in Oshkosh, WI (2024, 62 clinicians with data). Median for this group: 391. Middle half: 147 to 1,290.
Close to the middle for 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
Close to the middle for clinicians listed under Nurse Practitioner in Oshkosh, WI (2024, 62 clinicians with data). Median for this group: $21,860. Middle half: $3,094 to $141,043.
Close to the middle for 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.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Ann Mayer are from 2023.
92 active clinicians are listed under Nurse Practitioner with a practice address in Oshkosh, WI (3,995 in Wisconsin).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Oshkosh
17.4% of these 92 clinicians have the CMS telehealth indicator.
64.1% of these 92 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 B services
Medicare Part B services increased 680% from 49 in 2020 to 382 in 2023.
- 2020: 49
- 2022: 134
- 2023: 382
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Medicare-allowed amount
Medicare-allowed amount increased 186% from $2,885 in 2020 to $8,249 in 2023.
- 2020: $2,885
- 2022: $4,325
- 2023: $8,249
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Paid by Medicare
Paid by Medicare increased 184% from $2,322 in 2020 to $6,586 in 2023.
- 2020: $2,322
- 2022: $3,531
- 2023: $6,586
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 730% from 50 in 2020 to 415 in 2024.
- 2020: 50
- 2021: 34
- 2022: 242
- 2023: 888
- 2024: 415
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30-day fills
30-day fills increased 910% from 85 in 2020 to 858 in 2024.
- 2020: 85
- 2021: 52
- 2022: 399
- 2023: 1,882
- 2024: 858
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Part D drug cost
Part D drug cost increased 271% from $10,503 in 2020 to $38,936 in 2024.
- 2020: $10,503
- 2021: $2,934
- 2022: $25,029
- 2023: $161,386
- 2024: $38,936
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $17.59 in 2021 to $24.17 in 2024.
- 2021: $17.59
- 2022: $684.71
- 2023: $606.58
- 2024: $24.17
Sources: CMS Medicare Physician & Other Practitioners (2023), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2024), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท 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 2024 (payments made January 1 โ December 31, 2024): fewer than 11 records totaling $24.17.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
|
XARELTO | General | $24.17 |
Source: CMS Open Payments, program year 2024, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2019โ2022 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ by Provider and Service data, 2020โ2023; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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80048
Blood test, basic group of blood chemicals (calcium, total)
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82 | 58 | $103.87 | $8.23 |
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93294
Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days
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75 | 33 | $188.24 | $24.17 |
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93296
Evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days
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74 | 32 | $158.84 | $21.32 |
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36415
Insertion of needle into vein for collection of blood sample
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52 | 43 | $27.46 | $8.40 |
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99232
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
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38 | 28 | $362.42 | $63.99 |
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83735
Magnesium level
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24 | 21 | $44.00 | $6.57 |
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84443
Blood test, thyroid stimulating hormone (tsh)
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13 | 13 | $136.69 | $16.46 |
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80061
Blood test, lipids (cholesterol and triglycerides)
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12 | 11 | $104.83 | $13.12 |
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99238
Hospital discharge day management, 30 minutes or less
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12 | 12 | $325.67 | $65.53 |
Source: CMS Part B by Provider and Service, 2023; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
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 |
|---|---|---|---|---|---|
| Metoprolol Succinate | Metoprolol Succinate | 57 | 4,290 | $832.47 | 36 |
| Atorvastatin Calcium | Atorvastatin Calcium | 43 | 2,566 | $403.13 | 25 |
| Clopidogrel | Clopidogrel Bisulfate | 42 | 2,084 | $344.98 | 23 |
| Amlodipine Besylate | Amlodipine Besylate | 36 | 2,270 | $298.61 | 24 |
| Metoprolol Tartrate | Metoprolol Tartrate | 32 | 1,533 | $89.78 | 20 |
| Lisinopril | Lisinopril | 31 | 2,430 | $209.48 | 16 |
| Furosemide | Furosemide | 30 | 1,918 | $136.88 | 18 |
| Nitroglycerin | Nitroglycerin | 25 | 190 | $185.27 | 24 |
| Isosorbide Mononitrate Er | Isosorbide Mononitrate | 24 | 1,614 | $410.63 | 15 |
| Eliquis | Apixaban | 20 | 1,350 | $25,925.65 | 12 |
| Losartan Potassium | Losartan Potassium | 18 | 883 | $203.70 | 12 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 17 | 1,060 | $177.20 | 12 |
| Carvedilol | Carvedilol | 16 | 1,200 | $108.86 | 11 |
| Warfarin Sodium | Warfarin Sodium | 12 | 1,014 | $118.35 | โ |
| Brilinta | Ticagrelor | 12 | 660 | $9,490.62 | โ |
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
Self-certified to NPPES: 2024-01-16NUCC 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.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NURSE PRACTITIONER
I20190718000034
WI
8325373939
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
Aurora Medical Group, Inc.
855 N Westhaven Dr, Oshkosh, WI 549047668
Phone: 9203038700
Aurora Medical Group, Inc.
210 Wisconsin American Dr, Fond Du Lac, WI 549372999
Phone: 9209074800
Aurora Medical Group, Inc.
1020 N 12th St, Milwaukee, WI 532331308
Phone: 4142193056
Secondary Practice Locations
5045 W Grande Market Dr
Appleton, WI 549138517
Phone: 9208869380
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Obstetrics & Gynecology
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant
Nurse Practitioner
Advanced Practice Nurse Prescriber
Nurse Practitioner
Family Nurse Practitioner (Board Certified)
Internal Medicine - Gastroenterology
Doctor of Medicine (M.D.)
Surgery
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 855 N WESTHAVEN DR, OSHKOSH, WI 549047668 (Tel: 9203038700)
Registered at PO BOX 735044, CHICAGO, IL 606735044 (Tel: 8003262250)
Registered at 5045 W GRANDE MARKET DR, APPLETON, WI 549138517 (Tel: 9208869380)
Registered at 5045 W GRANDE MARKET DR, APPLETON, WI 549138517 (Tel: 9208869380)
NPI status registered as active in NPPES database
Registered at 2801 W KINNICKINNIC RIVER PKWY, MILWAUKEE, WI 532153669 (Tel: 4146493560)
Registered at 2801 W KINNICKINNIC RIVER PKWY, MILWAUKEE, WI 532153669 (Tel: 4146493560)
Recorded as ANN MAYER, NP
Nurse Practitioner (license number reported to NPPES: WI 9092-033)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Nurse Practitioners in Oshkosh
- Kay Zier, APNP
- Chris O'loughlin, APNP
- Shari Vanstraten, NP
- Simran Zander, NP
- Jamie Vandenheuvel, APNP
- Mollie May, APNP
Mailing Address
Po Box 735044
Chicago, IL 606735044
Phone: 8003262250