Lesley-Ann Gail Derby McCook, MD
Hepatology Physician · Maywood, IL
Lesley-Ann Gail Derby McCook, MD is a hepatology physician with a practice address in Maywood, Illinois, and NPI 1720665474, issued on Mar 27, 2021. Check the license (Illinois 036.170844, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Lesley-Ann Gail Derby McCook
- Credential
- MD
- Primary taxonomy
- Hepatology Physician 207RI0008X
- License number
- 036.170844 IL
Self-reported in NPPES; status is on the state search - Practice location
- 2160 S 1St Ave, Maywood, IL 60153
- Phone
- (561) 548-1450
- Enumerated
- Mar 27, 2021
- Record last updated
- Jul 2, 2024
- Fax
- (561) 548-1459
- Medicare enrollment
- Enrolled (PECOS I20251103000531); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 2160 S 1St Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Stefanie AbbottFamily Medicine Physician1861137457
- Osamah Abdallah, M.D.Internal Medicine Physician1275976144
- Abdelhai Abdelqader, MDGastroenterology Physician1073931127
- Samer Abdelsamie, D.M.DOral and Maxillofacial Surgery (Dentist)1366732257
- Zaid Abdelsattar, MD, MSCThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1760793293
- Gerges Abdelsayed, MBBCH BAODiagnostic Radiology Physician1942902606
Verify Lesley-Ann Gail Derby McCook in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036.170844Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average hepatology physician in 2024
78 Medicare Part D claims for 32 beneficiaries, against an average of 762 among the 228 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of 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.
Bills Medicare through one group practice
- Hha Associates LLCAtlantis, FL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hepatology Physician providers in Illinois
There are 23 hepatology physician records in Illinois.
Other hepatology physician records in Illinois
- Jamie BerkesMaywood, IL1891809620
- Justin Boike, MDChicago, IL1497014294
- Amanda Cheung, M.D.Chicago, IL1548585193
- Scott Cotler, MDMaywood, IL1225142730
- Robert Craig, M.D.Chicago, IL1225014103
- Sonu Dhillon, MDChicago, IL1225017593
- Andres Duarte, MDChicago, IL1043520380
- Sheila Eswaran, M.D.Chicago, IL1134141039
- Daniel Ganger, MDChicago, IL1407821689
- Dempsey Hughes, M.D.Chicago, IL1518306455
Common questions
What is Lesley-Ann Gail Derby McCook, MD's NPI number?
Lesley-Ann Gail Derby McCook, MD's National Provider Identifier (NPI) is 1720665474, issued on Mar 27, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Lesley-Ann Gail Derby McCook, MD located?
The NPPES record lists a practice address at 2160 S 1St Ave, Maywood, IL, 60153. Phone: (561) 548-1450. Providers update this record themselves, so call before visiting.
How can I verify Lesley-Ann Gail Derby McCook, MD's license?
NPPES lists Illinois license number 036.170844, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Lesley-Ann Gail Derby McCook, MD prescribe under Medicare Part D?
In 2024, Lesley-Ann Gail Derby McCook, MD had 78 Medicare Part D claims for 32 beneficiaries; the average among hepatology physician prescribers was 762. 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.