Amy M Ladewski , PA-C
Physician Assistant โข Chicago, IL
259 E Erie St Ste 1600
Chicago, IL 606113111
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 17, 2013; this date does not establish years in practice.
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Published CMS data list 128 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:
- 99215 โ Established patient outpatient office visit: 57 service units.
- 99214 โ Established patient outpatient office visit: 34 service units.
- 99443 โ Telephone medical discussion with physician: 25 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 all 4 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 539 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:
- Linzess (Linaclotide) โ 109 prescription fills, including refills.
- Omeprazole โ 98 prescription fills, including refills.
- Motegrity (Prucalopride Succinate) โ 54 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 16 records in the table ยท Guide: How to read Medicare Part D prescriber data
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Close to the middle for Medicare Part B services among clinicians listed under Physician Assistant in Chicago, IL (2024, 588 clinicians with data). Median for this group: 110. Middle half: 45 to 306.
Fewer Medicare Part B services than 60% of clinicians listed under Physician Assistant in Illinois (2024, 2,422 clinicians with data). Median for this group: 212. Middle half: 76 to 548.
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 204 in 2020 to 128 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
259 E Erie St Ste 1600
Chicago, IL 606113111
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: Northwestern Medical Faculty Foundation. 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
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
103 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 $13,851 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 $9,686 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
1,069 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
$330,182 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: $6,935.38 across 22 records.
By nature of payment (3 largest of 4)
- Consulting Fee: $3,495.00 across 3 records.
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program: $2,500.00 across 4 records.
- Food and Beverage: $689.90 across 13 records.
Reporting-company totals (3 largest of 5)
- Ardelyx, Inc.: $3,013.96 across 10 records.
- Salix Pharmaceuticals, a division of Bausch Health US, LLC: $1,552.99 across 4 records.
- Novo Nordisk Inc: $1,155.00 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, 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.
Enrolled in Medicare (PECOS)
Amy Ladewski 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 Amy Ladewski 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 Chicago and Illinois
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Close to the middle for clinicians listed under Physician Assistant in Chicago, IL (2024, 588 clinicians with data). Median for this group: 110. Middle half: 45 to 306.
Fewer Medicare Part B services than 60% of clinicians listed under Physician Assistant in Illinois (2024, 2,422 clinicians with data). Median for this group: 212. Middle half: 76 to 548.
Medicare-allowed amount
Close to the middle for clinicians listed under Physician Assistant in Chicago, IL (2024, 588 clinicians with data). Median for this group: $9,495. Middle half: $3,730 to $23,698.
Close to the middle for clinicians listed under Physician Assistant in Illinois (2024, 2,422 clinicians with data). Median for this group: $16,580. Middle half: $6,650 to $35,717.
Paid by Medicare
Close to the middle for clinicians listed under Physician Assistant in Chicago, IL (2024, 588 clinicians with data). Median for this group: $7,176. Middle half: $2,794 to $17,605.
Close to the middle for clinicians listed under Physician Assistant in Illinois (2024, 2,422 clinicians with data). Median for this group: $12,415. Middle half: $4,894 to $26,472.
Medicare Part D prescriptions
More Part D prescriptions than 85% of clinicians listed under Physician Assistant in Chicago, IL (2024, 651 clinicians with data). Median for this group: 116. Middle half: 41 to 337.
More Part D prescriptions than 70% of clinicians listed under Physician Assistant in Illinois (2024, 2,668 clinicians with data). Median for this group: 203. Middle half: 67 to 595.
Part D drug cost
A higher Part D drug cost than 90% of clinicians listed under Physician Assistant in Chicago, IL (2024, 651 clinicians with data). Median for this group: $1,977. Middle half: $320 to $34,048.
A higher Part D drug cost than 90% of clinicians listed under Physician Assistant in Illinois (2024, 2,668 clinicians with data). Median for this group: $3,018. Middle half: $535 to $48,132.
1,446 active clinicians are listed under Physician Assistant with a practice address in Chicago, IL (4,929 in Illinois).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Chicago
17.4% of these 1,446 clinicians have the CMS telehealth indicator.
63.6% of these 1,446 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 37% from 204 in 2020 to 128 in 2024.
- 2020: 204
- 2021: 138
- 2022: 166
- 2023: 145
- 2024: 128
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Medicare-allowed amount
Medicare-allowed amount decreased 10% from $15,318 in 2020 to $13,851 in 2024.
- 2020: $15,318
- 2021: $15,688
- 2022: $19,424
- 2023: $16,527
- 2024: $13,851
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Paid by Medicare
Paid by Medicare decreased 16% from $11,553 in 2020 to $9,686 in 2024.
- 2020: $11,553
- 2021: $11,456
- 2022: $14,267
- 2023: $12,136
- 2024: $9,686
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 33% from 405 in 2020 to 539 in 2024.
- 2020: 405
- 2021: 366
- 2022: 477
- 2023: 559
- 2024: 539
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30-day fills
30-day fills increased 49% from 716 in 2020 to 1,069 in 2024.
- 2020: 716
- 2021: 699
- 2022: 890
- 2023: 1,043
- 2024: 1,069
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Part D drug cost
Part D drug cost increased 145% from $134,879 in 2020 to $330,182 in 2024.
- 2020: $134,879
- 2021: $212,422
- 2022: $244,400
- 2023: $290,099
- 2024: $330,182
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $225.56 in 2021 to $6,935.38 in 2025.
- 2021: $225.56
- 2022: $3,244.50
- 2023: $11,002.26
- 2024: $7,814.15
- 2025: $6,935.38
Sources: CMS Medicare Physician & Other Practitioners (2024), 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 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): 22 records totaling $6,935.38.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Salix Pharmaceuticals, a division of Bausch Health US, LLC |
Consulting Fee
Cash or cash equivalent
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TRULANCE | General | $1,400.00 |
| Novo Nordisk Inc |
Consulting Fee
Cash or cash equivalent
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โ | General | $1,155.00 |
| Gilead Sciences, Inc. |
Consulting Fee
Cash or cash equivalent
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Livdelzi | General | $940.00 |
| Ardelyx, Inc. |
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program
Cash or cash equivalent
|
IBSRELA | General | $875.00 |
| Ardelyx, Inc. |
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program
Cash or cash equivalent
|
IBSRELA | General | $875.00 |
| Ardelyx, Inc. |
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program
Cash or cash equivalent
|
IBSRELA | General | $500.00 |
| Ardelyx, Inc. |
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program
Cash or cash equivalent
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IBSRELA | General | $250.00 |
| Ardelyx, Inc. |
Travel and Lodging
Cash or cash equivalent
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IBSRELA | General | $152.66 |
| Gilead Sciences, Inc. |
Food and Beverage
In-kind items and services
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Livdelzi | General | $136.43 |
| Ardelyx, Inc. |
Food and Beverage
In-kind items and services
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IBSRELA | General | $114.55 |
| Ardelyx, Inc. |
Travel and Lodging
Cash or cash equivalent
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IBSRELA | General | $97.82 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC |
Food and Beverage
In-kind items and services
|
TRULANCE | General | $88.75 |
| Ardelyx, Inc. |
Food and Beverage
In-kind items and services
|
IBSRELA | General | $70.46 |
| Ardelyx, Inc. |
Food and Beverage
In-kind items and services
|
IBSRELA | General | $49.54 |
| Phathom Pharmaceuticals, Inc. |
Food and Beverage
Cash or cash equivalent
|
VOQUEZNA | General | $43.45 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC |
Food and Beverage
In-kind items and services
|
TRULANCE | General | $39.28 |
| Gilead Sciences, Inc. |
Food and Beverage
In-kind items and services
|
Livdelzi | General | $33.83 |
| Ardelyx, Inc. |
Food and Beverage
In-kind items and services
|
IBSRELA | General | $28.93 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC |
Food and Beverage
In-kind items and services
|
TRULANCE | General | $24.96 |
| Phathom Pharmaceuticals, Inc. |
Food and Beverage
Cash or cash equivalent
|
VOQUEZNA | General | $20.75 |
| Phathom Pharmaceuticals, Inc. |
Food and Beverage
Cash or cash equivalent
|
VOQUEZNA | General | $19.82 |
| Phathom Pharmaceuticals, Inc. |
Food and Beverage
Cash or cash equivalent
|
VOQUEZNA | General | $19.15 |
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 |
|---|---|---|---|---|
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99215
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
|
57 | 45 | $335.00 | $128.10 |
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
|
34 | 28 | $238.00 | $85.09 |
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99443
Telephone medical discussion with physician, 21-30 minutes
|
25 | 25 | $250.00 | $87.93 |
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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 | $403.00 | $121.49 |
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 |
|---|---|---|---|---|---|
| Linzess | Linaclotide | 109 | 6,720 | $119,631.70 | 30 |
| Omeprazole | Omeprazole | 98 | 8,473 | $1,993.97 | 41 |
| Motegrity | Prucalopride Succinate | 54 | 3,240 | $57,822.41 | 15 |
| Ibsrela | Tenapanor Hcl | 36 | 1,410 | $82,809.08 | โ |
| Peg 3350-Electrolyte | Sodium Chloride/Nahco3/Kcl/Peg | 35 | 44 | $829.55 | 32 |
| Famotidine | Famotidine | 28 | 2,355 | $733.82 | 11 |
| Movantik | Naloxegol Oxalate | 27 | 810 | $11,315.21 | โ |
| Dexlansoprazole Dr | Dexlansoprazole | 26 | 1,110 | $6,409.97 | โ |
| Nortriptyline Hcl | Nortriptyline Hcl | 23 | 1,710 | $255.83 | โ |
| Lansoprazole | Lansoprazole | 20 | 919 | $17,196.91 | โ |
| Pantoprazole Sodium | Pantoprazole Sodium | 17 | 1,470 | $216.80 | โ |
| Trulance | Plecanatide | 15 | 870 | $16,723.78 | โ |
| Sod Sulf-Potass Sulf-Mag Sulf | Sodium, Potassium,mag Sulfates | 15 | 18 | $854.20 | 15 |
| Esomeprazole Magnesium | Esomeprazole Magnesium | 14 | 420 | $234.34 | โ |
| Pyridostigmine Bromide | Pyridostigmine Bromide | 11 | 572 | $1,018.44 | โ |
| Aprepitant | Aprepitant | 11 | 315 | $12,135.85 | 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: 2024-07-16NUCC 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.
NUCC Taxonomy Code: 363AM0700X
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICIAN ASSISTANT
I20130803000212
IL
4284876202
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
Northwestern Medical Faculty Foundation
1460 N Halsted St, Chicago, IL 606422613
Phone: 3129266146
Northwestern Medical Faculty Foundation
660 N Westmoreland Rd, Lake Forest, IL 600451673
Phone: 3129266146
Northwestern Medical Faculty Foundation
675 N Saint Clair St, Chicago, IL 606115975
Northwestern Medical Faculty Foundation
636 Raymond Dr, Naperville, IL 605639789
Phone: 6304162300
Northwestern Medical Faculty Foundation
259 E Erie St, Chicago, IL 606112930
Phone: 3125031944
Northwestern Medical Faculty Foundation
675 N St Clair, Chicago, IL 606115975
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Colon & Rectal Surgery
Doctor of Medicine (M.D.)
Internal Medicine - Gastroenterology
Doctor of Medicine (M.D.)
Surgery - Trauma Surgery
Doctor of Medicine (M.D.)
Dietitian, Registered
Registered Dietitian
Internal Medicine - Gastroenterology
Doctor of Osteopathic Medicine (D.O.)
Internal Medicine - Gastroenterology
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Recorded as AMY LADEWSKI, PA-C
Physician Assistant (license number reported to NPPES: IL 085004720)
Registered at 259 E ERIE ST STE 1600, CHICAGO, IL 606113111 (Tel: 3126955620)
Registered at 259 E ERIE ST STE 1600, CHICAGO, IL 606113111 (Tel: 3126955620)
Recorded as AMY LADEWSKI., PA-C
Physician Assistant (license number reported to NPPES: IL 085004720)
NPI status registered as active in NPPES database
Registered at 660 N WESTMORELAND RD, LAKE FOREST, IL 600451659 (Tel: 8472345600)
Registered at 4 DIAMOND DR, LITCHFIELD, IL 620561733 (Tel: 2175563661)
Recorded as AMY KASSEBAUM, PA-C
Physician Assistant (license number reported to NPPES: IL 085004720)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Physician Assistants in Chicago
- Alison Karmin
- Tincy Oommen, PA-C
- Angela Huisman, PA-C
- Camryn Schmidt, PA-C
- Man Ye, PA
- Adina Hattar, PA-C
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Mailing Address
259 E Erie St Ste 1600
Chicago, IL 606113111
Phone: 3126955620