Gregory Robert Cook, APRN, CNP
Nurse Practitioner · Chicago, IL
Gregory Robert Cook, APRN, CNP is a nurse practitioner with a practice address in Chicago, Illinois, and NPI 1053964395, issued on Jul 16, 2019. Check the license (Illinois 209027656, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gregory Robert Cook
- Credential
- APRN, CNP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License numbers
- 209027656 IL
11003002 FL
Self-reported in NPPES; status is on the state search - Practice location
- 676 N Saint Clair St Ste 2100, Chicago, IL 60611
- Phone
- (312) 695-1800
- Enumerated
- Jul 16, 2019
- Record last updated
- Sep 19, 2023
- Fax
- (312) 695-4741
- Medicare enrollment
- Enrolled (PECOS I20230918004215); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 676 N Saint Clair St Ste 2100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- William Ahrenholz, PAPhysician Assistant1043968001
- Piotr Babinski, M.D.Pulmonary Disease Physician1730683699
- Michael Cuttica, MDCritical Care Medicine (Internal Medicine) Physician1932224441
- Brian Garibaldi, M.D.Pulmonary Disease Physician1760538979
- Melissa Huml, APRN, CNPNurse Practitioner1639973423
- Amanda Kamar, MDPulmonary Disease Physician1891291415
Verify Gregory Robert Cook in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 209027656Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
33% fewer Medicare Part D claims than the average nurse practitioner in 2024
743 Medicare Part D claims for 239 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 58% of claims.
Most prescribed
- Trelegy Ellipta119 claims
- Albuterol Sulfate Hfa115 claims
- Prednisone62 claims
- Azithromycin60 claims
- Anoro Ellipta54 claims
- Breo Ellipta36 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $263.22
8 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 38,884 providers of this specialty with any payment received $791.64 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Northwestern Medical Faculty FoundationChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
952 nurse practitioner records list a practice address in Chicago
They are 952 of the 63,379 NPPES records with a practice address in Chicago, and 4,892 nurse practitioner records in Illinois.
All 952 in Chicago → All 4,892 in Illinois → Every provider in Chicago →
Other nurse practitioner records in Illinois
- Janice Abadilla, FNP-BCPeoria, IL1548157175
- Philomena AbebePark Ridge, IL1902780174
- Milagros Abellera, APNChicago, IL1528076239
- Edwina Abloh, APN-CNPSkokie, IL1689314098
- Sandra Abraham, CNPDwight, IL1982883245
- Sharon Abraham, APN-CNPArlington Heights, IL1396485884
- Hazel Acacio, APNPWauconda, IL1205471679
- Anthony Aceto, APRN, FNP-CSchaumburg, IL1891302956
- Francisco Acevedo, APRN, CNPMokena, IL1467446930
- Mina Acevedo, APRNGlenview, IL1972174688
Common questions
What is Gregory Robert Cook, APRN, CNP's NPI number?
Gregory Robert Cook, APRN, CNP's National Provider Identifier (NPI) is 1053964395, issued on Jul 16, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Robert Cook, APRN, CNP located?
The NPPES record lists a practice address at 676 N Saint Clair St Ste 2100, Chicago, IL, 60611. Phone: (312) 695-1800. Providers update this record themselves, so call before visiting.
How can I verify Gregory Robert Cook, APRN, CNP's license?
NPPES lists Illinois license number 209027656, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Gregory Robert Cook, APRN, CNP prescribe under Medicare Part D?
In 2024, Gregory Robert Cook, APRN, CNP had 743 Medicare Part D claims for 239 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.