Kathleen M Barta , PA-C
Physician Assistant โข Brookfield, WI
150 S Sunny Slope Rd Ste 136
Brookfield, WI 530054858
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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Kathleen Barta is listed in NPPES under Physician Assistant.
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NPI assigned on May 12, 2006; this date does not establish years in practice.
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Published CMS data list 111 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99213 โ Established patient outpatient office visit: 66 service units.
- 99214 โ Established patient outpatient office visit: 33 service units.
- 99204 โ New patient outpatient office visit: 12 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See the full table ยท Guide: How to read Medicare Part B data
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Published CMS data list 270 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:
- Methenamine Hippurate โ 71 prescription fills, including refills.
- Doxycycline Monohydrate โ 45 prescription fills, including refills.
- Amoxicillin โ 44 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 9 records in the table ยท Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 60% of clinicians listed under Physician Assistant in Brookfield, WI (2024, 17 clinicians with data). Median for this group: 163. Middle half: 63 to 397.
Fewer Medicare Part B services than 60% of clinicians listed under Physician Assistant in Wisconsin (2024, 1,918 clinicians with data). Median for this group: 151. Middle half: 65 to 328.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 384 in 2020 to 111 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
150 S Sunny Slope Rd Ste 136
Brookfield, WI 530054858
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: Infectious Disease Specialists Of Se Wi, Sc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026
2000
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
75 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2024.
Medicare-allowed amount
About $9,655 in 2024
The total amount Medicare approved for these services in 2024. 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, 2024.
Paid by Medicare
About $7,465 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, 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, 2024.
30-day fills
411 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
$15,160 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.
Open Payments general payments, program year 2025
All general payments: $196.63 across 16 records.
By nature of payment
- Food and Beverage: $196.63 across 16 records.
Reporting-company totals (3 largest of 4)
- ABBVIE INC.: $146.83 across 13 records.
- Shionogi Inc: $18.03 across 1 record.
- EMD Serono, Inc.: $16.72 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
26 years (graduated 2000)
CMS Doctors and Clinicians data list 2000 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, CMS release of October 2, 2026.
NPI first issued
2006
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, CMS release of October 2, 2026; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
What this does not show: Telehealth (some services)
It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians, CMS release of October 2, 2026.
Enrolled in Medicare (PECOS)
Kathleen Barta 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 Kathleen Barta 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 Brookfield and Wisconsin
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 60% of clinicians listed under Physician Assistant in Brookfield, WI (2024, 17 clinicians with data). Median for this group: 163. Middle half: 63 to 397.
Fewer Medicare Part B services than 60% of clinicians listed under Physician Assistant in Wisconsin (2024, 1,918 clinicians with data). Median for this group: 151. Middle half: 65 to 328.
Medicare-allowed amount
A lower Medicare-allowed amount than 60% of clinicians listed under Physician Assistant in Brookfield, WI (2024, 17 clinicians with data). Median for this group: $10,221. Middle half: $6,957 to $24,301.
Close to the middle for clinicians listed under Physician Assistant in Wisconsin (2024, 1,918 clinicians with data). Median for this group: $11,613. Middle half: $5,395 to $21,454.
Paid by Medicare
A lower Medicare payment amount than 60% of clinicians listed under Physician Assistant in Brookfield, WI (2024, 17 clinicians with data). Median for this group: $8,040. Middle half: $5,026 to $17,848.
Close to the middle for clinicians listed under Physician Assistant in Wisconsin (2024, 1,918 clinicians with data). Median for this group: $8,471. Middle half: $3,920 to $15,797.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Physician Assistant in Brookfield, WI (2024, 17 clinicians with data). Median for this group: 270. Middle half: 135 to 389.
Close to the middle for clinicians listed under Physician Assistant in Wisconsin (2024, 2,087 clinicians with data). Median for this group: 194. Middle half: 67 to 678.
Part D drug cost
A higher Part D drug cost than 75% of clinicians listed under Physician Assistant in Brookfield, WI (2024, 17 clinicians with data). Median for this group: $6,858. Middle half: $989 to $15,160.
A higher Part D drug cost than 60% of clinicians listed under Physician Assistant in Wisconsin (2024, 2,087 clinicians with data). Median for this group: $2,424. Middle half: $547 to $63,808.
22 active clinicians are listed under Physician Assistant with a practice address in Brookfield, WI (3,519 in Wisconsin).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Brookfield
40.9% of these 22 clinicians have the CMS telehealth indicator.
86.4% of these 22 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 decreased 71% from 384 in 2020 to 111 in 2024.
- 2020: 384
- 2021: 409
- 2022: 320
- 2023: 182
- 2024: 111
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Medicare-allowed amount
Medicare-allowed amount decreased 62% from $25,470 in 2020 to $9,655 in 2024.
- 2020: $25,470
- 2021: $32,714
- 2022: $24,716
- 2023: $14,119
- 2024: $9,655
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Paid by Medicare
Paid by Medicare decreased 61% from $19,281 in 2020 to $7,465 in 2024.
- 2020: $19,281
- 2021: $24,705
- 2022: $18,692
- 2023: $10,290
- 2024: $7,465
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 55% from 594 in 2020 to 270 in 2024.
- 2020: 594
- 2021: 655
- 2022: 594
- 2023: 436
- 2024: 270
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30-day fills
30-day fills decreased 49% from 803 in 2020 to 411 in 2024.
- 2020: 803
- 2021: 907
- 2022: 879
- 2023: 713
- 2024: 411
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Part D drug cost
Part D drug cost decreased 46% from $27,891 in 2020 to $15,160 in 2024.
- 2020: $27,891
- 2021: $23,499
- 2022: $73,364
- 2023: $18,646
- 2024: $15,160
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $145.90 in 2021 to $196.63 in 2025.
- 2021: $145.90
- 2022: $479.14
- 2023: $504.90
- 2024: $318.61
- 2025: $196.63
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS release of October 2, 2026, 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 2025 (payments made January 1 โ December 31, 2025): 16 records totaling $196.63.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
โ | General | $26.05 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
AVYCAZ | General | $19.95 |
| Shionogi Inc |
Food and Beverage
In-kind items and services
|
Fetroja | General | $18.03 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
DALVANCE | General | $17.06 |
| EMD Serono, Inc. |
Food and Beverage
Cash or cash equivalent
|
โ | General | $16.72 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
|
PREVNAR 20 | General | $15.05 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
DALVANCE | General | $14.67 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
AVYCAZ | General | $9.19 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
AVYCAZ | General | $8.90 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
EMBLAVEO | General | $8.44 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
EMBLAVEO | General | $7.97 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
DALVANCE | General | $7.67 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
AVYCAZ | General | $7.62 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
DALVANCE | General | $7.59 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
AVYCAZ | General | $7.21 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
AVYCAZ | General | $4.51 |
Source: CMS Open Payments, program year 2025, 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 2016โ2023 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, 2017โ2024; 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 |
|---|---|---|---|---|
|
99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
|
66 | 52 | $185.00 | $71.07 |
|
99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
|
33 | 25 | $267.00 | $102.39 |
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99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
|
12 | 12 | $410.00 | $132.14 |
Source: CMS Part B by Provider and Service, 2024; 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 |
|---|---|---|---|---|---|
| Methenamine Hippurate | Methenamine Hippurate | 71 | 2,415 | $3,139.30 | 19 |
| Doxycycline Monohydrate | Doxycycline Monohydrate | 45 | 2,246 | $1,460.49 | 17 |
| Amoxicillin | Amoxicillin | 44 | 2,176 | $442.73 | 21 |
| Cephalexin | Cephalexin | 33 | 1,550 | $732.17 | 16 |
| Ceftriaxone | Ceftriaxone Sodium | 20 | 140 | $6,868.14 | โ |
| Vancomycin Hcl | Vancomycin Hcl | 19 | 461 | $2,116.59 | โ |
| Fluconazole | Fluconazole | 15 | 100 | $215.61 | โ |
| Sulfamethoxazole-Trimethoprim | Sulfamethoxazole/Trimethoprim | 12 | 704 | $61.61 | โ |
| Penicillin V Potassium | Penicillin V Potassium | 11 | 630 | $123.28 | 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: 2024-12-17NUCC Taxonomy Code: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICIAN ASSISTANT
I20051027001157
WI
8022035120
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, CMS release of October 2, 2026
Infectious Disease Specialists Of Se Wi, Sc
150 S Sunny Slope Rd, Brookfield, WI 530054858
Phone: 2627864550
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant
Internal Medicine - Infectious Disease
Doctor of Osteopathic Medicine (D.O.)
Physician Assistant
Physician Assistant (Certified)
Internal Medicine - Infectious Disease
Doctor of Medicine (M.D.)
Physician Assistant - Medical
MPAS, Physician Assistant (Certified)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Physician Assistant (license number reported to NPPES: WI 1292-023)
NPI status registered as active in NPPES database
Registered at 150 S SUNNY SLOPE RD STE 136, BROOKFIELD, WI 530054858 (Tel: 2627864550)
Registered at 150 S SUNNY SLOPE RD STE 136, BROOKFIELD, WI 530054858 (Tel: 2627864550)
Recorded as KATHLEEN BARTA, PA-C
Physician Assistant (license number reported to NPPES: WI 1292-023)
NPI status registered as active in NPPES database
Registered at 150 S SUNNY SLOPE RD STE 136, BROOKFIELD, WI 530054858 (Tel: 2627864550)
Registered at 150 S SUNNY SLOPE RD STE 136, SUITE 103, BROOKFIELD, WI 530054858 (Tel: 2627864550)
Recorded as KATHLEEN BARTA, PA-C
Physician Assistant (license number reported to NPPES: WI 1292-023)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Physician Assistants in Brookfield
- Heather Hodges
- Jeremy Wojtecki, PA-C
- Peter Collins, PA
- Lauren Sweeney, PA-C
- Nicole Papermaster, PA
- Kelly Zalog, PA
Mailing Address
150 S Sunny Slope Rd Ste 136
Brookfield, WI 530054858
Phone: 2627864550