Corinne Williams , PA-C
Physician Assistant โข Chicago, IL
675 N Saint Clair St Fl 21
Chicago, IL 606115975
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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Corinne Williams is listed in NPPES under Physician Assistant.
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NPI assigned on July 14, 2015; this date does not establish years in practice.
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Published CMS data list 25 Original Medicare Part B services in 2020.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020. Published rows only; this is not a quality measure.
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Published Part B service records, 2020:
- 99443 โ Telephone medical discussion with physician: 25 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2019 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2020). CPT notice
See the full table ยท Guide: How to read Medicare Part B data
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Published CMS data list 113 Medicare Part D prescriptions, including refills, in 2021.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2021. Published rows only; this is not a quality measure.
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Published Part D records, 2021:
- Acyclovir โ 50 prescription fills, including refills.
- Prednisone โ 24 prescription fills, including refills.
- Allopurinol โ 17 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2021. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 5 records in the table ยท Guide: How to read Medicare Part D prescriber data
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Medicare Part B services went from 15 in 2017 to 25 in 2020.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2017โ2020.
Practice Location & Contact Primary Location
675 N Saint Clair St Fl 21
Chicago, IL 606115975
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $2,474 in 2020
The total amount Medicare approved for these services in 2020. 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, 2020.
Paid by Medicare
About $1,741 in 2020
The part of the Medicare-allowed amount that Medicare itself paid in 2020, 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, 2020.
30-day fills
194 standardized 30-day fills in 2021
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
$1,400 in 2021
The total cost of these prescriptions in 2021, 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, 2021.
Open Payments general payments, program year 2021
All general payments: $10,015.20 across 17 records.
By nature of payment (3 largest of 4)
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program: $7,675.00 across 8 records.
- Consulting Fee: $1,160.00 across 1 record.
- Travel and Lodging: $786.34 across 2 records.
Reporting-company totals
- AstraZeneca Pharmaceuticals LP: $5,552.83 across 10 records.
- AbbVie Inc.: $4,449.70 across 6 records.
- Amgen Inc.: $12.67 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 2021 (published June 30, 2026).
NPI first issued
2015
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.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
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)
Corinne Williams 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 Corinne Williams 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
Comparisons use 2024 data. The latest CMS data for Corinne Williams are from 2020.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Corinne Williams are from 2021.
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 went from 15 in 2017 to 25 in 2020.
- 2017: 15
- 2018: 11
- 2019: 31
- 2020: 25
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Medicare-allowed amount
Medicare-allowed amount increased 81% from $1,368 in 2017 to $2,474 in 2020.
- 2017: $1,368
- 2018: $1,434
- 2019: $3,712
- 2020: $2,474
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Paid by Medicare
Paid by Medicare increased 59% from $1,095 in 2017 to $1,741 in 2020.
- 2017: $1,095
- 2018: $975
- 2019: $2,908
- 2020: $1,741
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Medicare Part D prescriptions
Medicare Part D prescriptions went from 18 in 2017 to 113 in 2021.
- 2017: 18
- 2018: 96
- 2019: 311
- 2020: 258
- 2021: 113
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30-day fills
30-day fills went from 18 in 2017 to 194 in 2021.
- 2017: 18
- 2018: 113
- 2019: 350
- 2020: 342
- 2021: 194
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Part D drug cost
Part D drug cost went from $799 in 2017 to $1,400 in 2021.
- 2017: $799
- 2018: $197,519
- 2019: $917,328
- 2020: $647,780
- 2021: $1,400
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Industry payments (Open Payments)
CMS data for industry payments (Open Payments) are available for 2021 only.
Sources: CMS Medicare Physician & Other Practitioners (2020), CMS Medicare Part D Prescribers (2021), CMS Open Payments (2021), 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 2021 (payments made January 1 โ December 31, 2021): 17 records totaling $10,015.20.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| AbbVie 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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VENCLEXTA | General | $1,925.00 |
| AstraZeneca Pharmaceuticals LP |
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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CALQUENCE | General | $1,750.00 |
| AstraZeneca Pharmaceuticals LP |
Consulting Fee
Cash or cash equivalent
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CALQUENCE | General | $1,160.00 |
| AstraZeneca Pharmaceuticals LP |
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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CALQUENCE | General | $1,150.00 |
| AbbVie 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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VENCLEXTA | General | $825.00 |
| AbbVie 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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VENCLEXTA | General | $825.00 |
| AstraZeneca Pharmaceuticals LP |
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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CALQUENCE | General | $600.00 |
| AbbVie Inc. |
Travel and Lodging
In-kind items and services
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VENCLEXTA | General | $451.25 |
| AbbVie Inc. |
Travel and Lodging
In-kind items and services
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VENCLEXTA | General | $335.09 |
| AstraZeneca Pharmaceuticals LP |
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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CALQUENCE | General | $300.00 |
| AstraZeneca Pharmaceuticals LP |
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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CALQUENCE | General | $300.00 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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CALQUENCE | General | $124.99 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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CALQUENCE | General | $111.98 |
| AbbVie Inc. |
Food and Beverage
In-kind items and services
|
VENCLEXTA | General | $88.36 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
|
CALQUENCE | General | $45.21 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
|
โ | General | $12.67 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
|
CALQUENCE | General | $10.65 |
Source: CMS Open Payments, program year 2021, 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 2016โ2019 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, 2017โ2020; 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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99443
Telephone medical discussion with physician, 21-30 minutes
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25 | 24 | $250.00 | $98.95 |
Source: CMS Part B by Provider and Service, 2020; 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 2021.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Acyclovir | Acyclovir | 50 | 3,186 | $844.03 | 20 |
| Prednisone | Prednisone | 24 | 187 | $89.56 | 11 |
| Allopurinol | Allopurinol | 17 | 750 | $203.03 | โ |
| Gabapentin | Gabapentin | 11 | 810 | $107.17 | โ |
| Prochlorperazine Maleate | Prochlorperazine Maleate | 11 | 80 | $156.67 | โ |
Source: CMS Part D by Provider and Drug, 2021; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2020-04-10NUCC 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.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICIAN ASSISTANT
I20170914000395
IL
4880990175
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Nurse Practitioner - Adult Health
Advanced Practice Nurse
Physician Assistant - Medical
Physician Assistant (Certified)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Recorded as CORINNE WILLIAMS, PA-C
Physician Assistant (license number reported to NPPES: IL 085.006156)
Registered at 675 N SAINT CLAIR ST FL 21, CHICAGO, IL 606115975 (Tel: 3129267722)
Registered at 676 N SAINT CLAIR ST STE 850, CHICAGO, IL 606113124 (Tel: 3126950990)
Physician Assistant (license number reported to NPPES: NY 018795)
Registered at 675 N SAINT CLAIR ST FL 21, CHICAGO, IL 606115975 (Tel: 3129267722)
Registered at 676 N SAINT CLAIR ST STE 850, CHICAGO, IL 606113124 (Tel: 3126950990)
NPI status registered as active in NPPES database
Registered at 259 E ERIE ST, CHICAGO, IL 606112987 (Tel: 3129267722)
Registered at 680 N LAKE SHORE DR, CHICAGO, IL 606114546 (Tel: (312) 695-6868)
Recorded as CORINNE BAZANY, PA-C
Physician Assistant (license number reported to NPPES: IL 085.006156)
NPI status registered as active in NPPES database
Registered at 520 E 70TH ST, STARR 341, NEW YORK, NY 100219800 (Tel: 2127467576)
Registered at 575 LEXINGTON AVE, NEW YORK, NY 100226102 (Tel: 2127467576)
Recorded as CORINNE BAZANY, PA-C
Physician Assistant (license number reported to NPPES: NY 018795)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Physician Assistants in Chicago
- Megan Lied, PA-C
- Rayna Gorstein
- Jamie Clabby, PA-C
- Joseph Samuels, PA-C
- Regina Uthe, PA-C
- Jeanine Aberbook, PA-C
Mailing Address
676 N Saint Clair St Ste 850
Chicago, IL 606113124
Phone: 3126950990