Gwen M. Cassidy, APN
Acute Care Nurse Practitioner · Chicago, IL
Gwen M. Cassidy, APN is an acute care nurse practitioner with a practice address in Chicago, Illinois, and NPI 1588063994, issued on Aug 21, 2014. Check the license (Illinois 209011722, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gwen M. Cassidy
- Credential
- APN
- Primary taxonomy
- Acute Care Nurse Practitioner 363LA2100X
- License number
- 209011722 IL
Self-reported in NPPES; status is on the state search - Practice location
- 675 N Saint Clair St, Chicago, IL 60611
- Phone
- (312) 695-5620
- Enumerated
- Aug 21, 2014
- Record last updated
- Aug 21, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20141104000477); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 675 N Saint Clair St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Abdul Aadam, M.D.Gastroenterology Physician1013038744
- Ronald Ackermann, MDInternal Medicine Physician1629029210
- Kehinde Adekola, MDHematology & Oncology Physician1306026117
- Sonya Agnew, M.D.Plastic Surgery Physician1962640250
- Mohammed Alghoul, M.D.Plastic Surgery Physician1932376746
- Sharon Allen, APRNAdult Health Nurse Practitioner1003849993
Verify Gwen M. Cassidy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 209011722Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
27% fewer Medicare Part D claims than the average acute care nurse practitioner in 2024
434 Medicare Part D claims for 133 beneficiaries, against an average of 594 among the 13,133 providers of this specialty who prescribed in Part D.
Most prescribed
- Omeprazole124 claims
- Rabeprazole Sodium36 claims
- Dexlansoprazole Dr28 claims
- Pantoprazole Sodium27 claims
- Esomeprazole Magnesium23 claims
- Lansoprazole20 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.
The MIPS final score for 2023 (Medicare payment program): 94.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $368.77
7 payments; by number, the most common kind was travel and lodging; the largest payer was Regeneron Healthcare Solutions, Inc. The 10,984 providers of this specialty with any payment received $647.94 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
- Paragon Clinical LLCBurr Ridge, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Acute Care Nurse Practitioner providers in Illinois
There are 639 acute care nurse practitioner records in Illinois.
Other acute care nurse practitioner records in Illinois
- Jessica Acosta, APRNChicago, IL1679169015
- Cathy Adamson, N.P.Elmhurst, IL1407906126
- Kelly Adcock, BSN MSN APNPeoria, IL1386707354
- Adeola Adeoye, APNChicago, IL1598103459
- Toluwalase AdeyemiChicago, IL1346137635
- Maria Agopian, NPElk Grove Village, IL1235407735
- Michael Ahart, APNWestmont, IL1346750767
- Sydney Ain, RN, AGACNPChicago, IL1043062268
- Alison Aldag, AGACNP-BCPeoria, IL1497531800
- Anthony AllenChicago, IL1750262234
Common questions
What is Gwen M. Cassidy, APN's NPI number?
Gwen M. Cassidy, APN's National Provider Identifier (NPI) is 1588063994, issued on Aug 21, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Gwen M. Cassidy, APN located?
The NPPES record lists a practice address at 675 N Saint Clair St, Chicago, IL, 60611. Phone: (312) 695-5620. Providers update this record themselves, so call before visiting.
How can I verify Gwen M. Cassidy, APN's license?
NPPES lists Illinois license number 209011722, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Gwen M. Cassidy, APN prescribe under Medicare Part D?
In 2024, Gwen M. Cassidy, APN had 434 Medicare Part D claims for 133 beneficiaries; the average among acute care nurse practitioner prescribers was 594. Part D covers Medicare prescriptions only.
What is Gwen M. Cassidy, APN's MIPS final score?
The 2023 MIPS final score is 94.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.