Emily B Williams , APRN, CNP
Nurse Practitioner 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 August 14, 2023; this date does not establish years in practice.
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Published CMS data list 54 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: 34 service units.
- 99214 โ Established patient outpatient office visit: 20 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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Fewer Medicare Part B services than 75% of clinicians listed under Nurse Practitioner in Chicago, IL (2024, 377 clinicians with data). Median for this group: 153. Middle half: 60 to 327.
Fewer Medicare Part B services than 85% of clinicians listed under Nurse Practitioner in Illinois (2024, 2,561 clinicians with data). Median for this group: 261. Middle half: 101 to 526.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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
2023
What Public CMS Data Show
Nurse Practitioner: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
58 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 $5,900 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 $4,604 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.
Open Payments general payments, program year 2025
All general payments: $4,788.41 across 19 records.
By nature of payment (3 largest of 4)
- Honoraria: $2,632.50 across 4 records.
- Consulting Fee: $1,755.00 across 4 records.
- Food and Beverage: $386.67 across 10 records.
Reporting-company totals (3 largest of 6)
- Celltrion USA Inc.: $4,545.43 across 12 records.
- Janssen Pharmaceuticals, Inc: $141.73 across 2 records.
- Takeda Pharmaceuticals U.S.A., Inc.: $41.46 across 2 records.
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
3 years (graduated 2023)
CMS Doctors and Clinicians data list 2023 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
2023
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)
Emily 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 Emily 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 services
Fewer Medicare Part B services than 75% of clinicians listed under Nurse Practitioner in Chicago, IL (2024, 377 clinicians with data). Median for this group: 153. Middle half: 60 to 327.
Fewer Medicare Part B services than 85% of clinicians listed under Nurse Practitioner in Illinois (2024, 2,561 clinicians with data). Median for this group: 261. Middle half: 101 to 526.
Medicare-allowed amount
A lower Medicare-allowed amount than 70% of clinicians listed under Nurse Practitioner in Chicago, IL (2024, 377 clinicians with data). Median for this group: $13,286. Middle half: $5,333 to $28,905.
A lower Medicare-allowed amount than 80% of clinicians listed under Nurse Practitioner in Illinois (2024, 2,561 clinicians with data). Median for this group: $21,010. Middle half: $8,652 to $42,014.
Paid by Medicare
A lower Medicare payment amount than 70% of clinicians listed under Nurse Practitioner in Chicago, IL (2024, 377 clinicians with data). Median for this group: $9,934. Middle half: $3,962 to $21,570.
A lower Medicare payment amount than 80% of clinicians listed under Nurse Practitioner in Illinois (2024, 2,561 clinicians with data). Median for this group: $15,151. Middle half: $6,396 to $31,322.
952 active clinicians are listed under Nurse Practitioner with a practice address in Chicago, IL (4,894 in Illinois).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Chicago
20% of these 952 clinicians have the CMS telehealth indicator.
56.2% of these 952 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
CMS data for Medicare Part B services are available for 2024 only.
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Medicare-allowed amount
CMS data for Medicare-allowed amount are available for 2024 only.
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Paid by Medicare
CMS data for Medicare payment amount are available for 2024 only.
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $517.43 in 2023 to $4,788.41 in 2025.
- 2023: $517.43
- 2024: $737.71
- 2025: $4,788.41
Sources: CMS Medicare Physician & Other Practitioners (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): 19 records totaling $4,788.41.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Celltrion USA Inc. |
Honoraria
Cash or cash equivalent
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ZYMFENTRA | General | $780.00 |
| Celltrion USA Inc. |
Honoraria
Cash or cash equivalent
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ZYMFENTRA | General | $780.00 |
| Celltrion USA Inc. |
Honoraria
Cash or cash equivalent
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ZYMFENTRA | General | $780.00 |
| Celltrion USA Inc. |
Consulting Fee
Cash or cash equivalent
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ZYMFENTRA | General | $780.00 |
| Celltrion USA Inc. |
Consulting Fee
Cash or cash equivalent
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ZYMFENTRA | General | $585.00 |
| Celltrion USA Inc. |
Honoraria
Cash or cash equivalent
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ZYMFENTRA | General | $292.50 |
| Celltrion USA Inc. |
Consulting Fee
Cash or cash equivalent
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ZYMFENTRA | General | $195.00 |
| Celltrion USA Inc. |
Consulting Fee
Cash or cash equivalent
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ZYMFENTRA | General | $195.00 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
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TREMFYA | General | $127.50 |
| Celltrion USA Inc. |
Food and Beverage
In-kind items and services
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ZYMFENTRA | General | $118.07 |
| Takeda Pharmaceuticals U.S.A., Inc. |
Food and Beverage
In-kind items and services
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ENTYVIO | General | $26.27 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
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TREMFYA | General | $23.75 |
| Pharmacosmos Therapeutics Inc. |
Food and Beverage
In-kind items and services
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MONOFERRIC | General | $20.59 |
| Celltrion USA Inc. |
Food and Beverage
In-kind items and services
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VEGZELMA | General | $16.01 |
| Ardelyx, Inc. |
Food and Beverage
In-kind items and services
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IBSRELA | General | $15.45 |
| Takeda Pharmaceuticals U.S.A., Inc. |
Food and Beverage
In-kind items and services
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ENTYVIO | General | $15.19 |
| Celltrion USA Inc. |
Travel and Lodging
Cash or cash equivalent
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ZYMFENTRA | General | $14.24 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
|
TREMFYA | General | $14.23 |
| Celltrion USA Inc. |
Food and Beverage
In-kind items and services
|
VEGZELMA | General | $9.61 |
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 2023 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, 2024; 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
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34 | 24 | $335.00 | $124.57 |
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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
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20 | 14 | $238.00 | $83.21 |
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.
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2024-10-11NUCC 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.
NUCC Taxonomy Code: 163WG0100X
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NURSE PRACTITIONER
I20231121001187
IL
9537517172
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
350 S Waukegan Rd, Deerfield, IL 600155239
Phone: 3129266146
Northwestern Medical Faculty Foundation
235 S Gary Ave, Bloomingdale, IL 601082213
Phone: 6308939600
Northwestern Medical Faculty Foundation
350 S Waukegan, Deerfield, IL 600155239
Phone: 3129263107
Northwestern Medical Faculty Foundation
7 Blanchard Cir, Wheaton, IL 601892038
Phone: 6306820500
Northwestern Medical Faculty Foundation
4445 W Irving Park Rd, Chicago, IL 606412808
Northwestern Medical Faculty Foundation
259 E Erie St, Chicago, IL 606112930
Phone: 3125031944
Northwestern Medical Faculty Foundation
675 N St Clair, Chicago, IL 606115975
Northwestern Medical Faculty Foundation
635 N Dearborn St, Chicago, IL 606544618
Phone: 3129260404
Northwestern Medical Faculty Foundation
820 S Il Route 59, Bartlett, IL 601031694
Phone: 6302252663
Northwestern Medical Faculty Foundation
675 N Saint Clair St, Chicago, IL 606115975
Northwestern Medical Faculty Foundation
233 S Gary Ave, Bloomingdale, IL 601082213
Phone: 6303584414
Northwestern Medical Faculty Foundation
660 N Westmoreland Rd, Lake Forest, IL 600451673
Phone: 3129266146
Northwestern Medical Faculty Foundation
820 Route 59, Barlett, IL 601031694
Phone: 6302139600
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 EMILY WILLIAMS, APRN, CNP
Registered Nurse (license number reported to NPPES: IL 041.454739)
Nurse Practitioner (license number reported to NPPES: IL 209.028282)
Registered at 259 E ERIE ST STE 1600, CHICAGO, IL 606113111 (Tel: 3126955620)
NPI status registered as active in NPPES database
Registered at 1140 N WELLS ST, CHICAGO, IL 606102529 (Tel: 8473704256)
Registered at 259 E ERIE ST STE 1600, CHICAGO, IL 606113111 (Tel: 3126955620)
Recorded as EMILY BLOCK, APRN, FNP-C
Registered Nurse (license number reported to NPPES: IL 041.454739)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Nurse Practitioners in Chicago
- Teresa Savino, NP
- Kimberly Barker- Price, APRN, AGPCNP
- Shirley Scott, WHNP
- Sherie Ajayi, NP
- Christine Bobek
- Caroline Slidell, CRNP
Mailing Address
259 E Erie St Ste 1600
Chicago, IL 606113111
Phone: 3126955620