Caitlin Greenfield, FNP-BC
Nurse Practitioner · Calumet Park, IL
Caitlin Greenfield, FNP-BC is a nurse practitioner with a practice address in Calumet Park, Illinois, and NPI 1184371668, issued on Mar 4, 2022. Check the license (Illinois 209.026074, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Caitlin Greenfield
- Credential
- FNP-BC
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License numbers
- 209.026074 IL
041.446555 IL
Self-reported in NPPES; status is on the state search - Practice location
- 12850 S Ashland Ave, Calumet Park, IL 60827
- Phone
- (708) 972-7958
- Enumerated
- Mar 4, 2022
- Record last updated
- Feb 15, 2023
- Medicare enrollment
- Enrolled (PECOS I20240904000399); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 12850 S Ashland Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lonyah Guy, APRNNurse Practitioner1235969916
- Raegene Hankle, FNP-BCNurse Practitioner1902522147
- Katarzyna Para, FNP-CFamily Nurse Practitioner1851969976
- William Sideras, PA-CPhysician Assistant1700429040
Verify Caitlin Greenfield in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 209.026074Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average nurse practitioner in 2024
249 Medicare Part D claims for 162 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.
Most prescribed
- Prednisone36 claims
- Azithromycin30 claims
- Amoxicillin-Clavulanate Potass17 claims
- Amoxicillin13 claims
- Cephalexin12 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: $91.07
2 payments; by number, the most common kind was food and beverage; the largest payer was Phadia US Inc. 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
- Physicians Immediate Care North Chicago LLCAlsip, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
3 nurse practitioner records list a practice address in Calumet Park
They are 3 of the 32 NPPES records with a practice address in Calumet Park, and 4,892 nurse practitioner records in Illinois.
All 3 in Calumet Park → All 4,892 in Illinois → Every provider in Calumet Park →
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 Caitlin Greenfield, FNP-BC's NPI number?
Caitlin Greenfield, FNP-BC's National Provider Identifier (NPI) is 1184371668, issued on Mar 4, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Caitlin Greenfield, FNP-BC located?
The NPPES record lists a practice address at 12850 S Ashland Ave, Calumet Park, IL, 60827. Phone: (708) 972-7958. Providers update this record themselves, so call before visiting.
How can I verify Caitlin Greenfield, FNP-BC's license?
NPPES lists Illinois license number 209.026074, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Caitlin Greenfield, FNP-BC prescribe under Medicare Part D?
In 2024, Caitlin Greenfield, FNP-BC had 249 Medicare Part D claims for 162 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.