Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Lillie Cook

Individual provider Physician Assistant · NPI 1205583085

Lillie Cook is a Physician Assistant in Chicago, Illinois. Qualified in 2021, 5 years ago. Practices with Illinois Gastroenterology Group LLC, a 116-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Illinois.

Years since qualifying
5
Licensed in
IL
In the registry since
2022
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Practice location Address checks out

331 W Surf St Ste 912
Chicago, IL 60657-7227
Phone: (847) 491-9020
Fax: (847) 491-0182
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 800 Austin St, Evanston, IL 60202-3439 — (847) 491-9020

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X · Licence 085009578 (IL)

Record details

NPI number1205583085
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorYes
NPI enumeratedMarch 2, 2022
Last updated in NPPESNovember 20, 2025
Certification dateNovember 20, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2021 (5 years in practice)
Group practice Illinois Gastroenterology Group Llc — 116 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations4 on file with Medicare

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $491 26 payments · a meal or drink at a meeting or visit, not a fee
Education $79 1 payment · educational material or training, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Illinois Gastroenterology Group LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 116 clinicians in the practice; 12 are shown here.

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