Catherine Krsek Pieroni, FNP
Family Nurse Practitioner · Merrillville, IN
Catherine Krsek Pieroni, FNP is a family nurse practitioner with a practice address in Merrillville, Indiana, and NPI 1427278308, issued on Apr 26, 2007. Check the license (Indiana 71001516A, as entered in NPPES) with the Indiana board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Catherine Krsek Pieroni
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 71001516A IN
Self-reported in NPPES; status is on the state search - Practice location
- 9247 Broadway, Merrillville, IN 46410
- Phone
- (219) 769-6970
- Enumerated
- Apr 26, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (219) 769-6768
- Medicare enrollment
- Enrolled (PECOS I20080602000744); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 5,867 in Indiana → Look up another NPI →
Also registered at 9247 Broadway
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Oren Conway, MDPediatrics Physician1184793663
- Frances Essary, RN CRNPPediatrics Physician1821294091
Verify Catherine Krsek Pieroni in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Indiana board licenses this profession
Search for license 71001516ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
66% fewer Medicare Part D claims than the average family nurse practitioner in 2024
447 Medicare Part D claims for 330 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Most prescribed
- Azithromycin76 claims
- Cephalexin66 claims
- Doxycycline Monohydrate35 claims
- Amoxicillin-Clavulanate Potass26 claims
- Prednisone26 claims
- Paxlovid25 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
- Community Care Network IncValparaiso, IN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Catherine Krsek Pieroni among 5,867 family nurse practitioner records in Indiana
Catherine Krsek Pieroni, FNP is one of 5,867 family nurse practitioner records with a practice address in Indiana. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 8% of them.
- NPI issued2007 · 8% of these records are older, 89% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2002 · median 2018 among the 3,953 with a school on file
- Record last updated2007 · 33% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
57 family nurse practitioner records list a practice address in Merrillville
They are 57 of the 1,972 NPPES records with a practice address in Merrillville, and 5,867 family nurse practitioner records in Indiana.
All 5,867 in Indiana → Every provider in Merrillville → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Rosie Atkinson, NPMerrillville, IN 464101316947070
- Martha Drake, NPMerrillville, IN 464101134204183
- Sarah Dumbauld, MSN, APRN, FNP-CMerrillville, IN 464101588838726
- Tamara Elkins, FNPMerrillville, IN 464101922076702
- Debra Givens, APNMerrillville, IN 464101740428150
- Verna Guevarra, FNP-BCMerrillville, IN 464101942575188
- Mary HutchisonMerrillville, IN 464101972732725
- Tawa Ibikunle-Salami, FNPMerrillville, IN 464101760743306
Common questions
What is Catherine Krsek Pieroni, FNP's NPI number?
Catherine Krsek Pieroni, FNP's National Provider Identifier (NPI) is 1427278308, issued on Apr 26, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Catherine Krsek Pieroni, FNP located?
The NPPES record lists a practice address at 9247 Broadway, Merrillville, IN, 46410. Phone: (219) 769-6970. Providers update this record themselves, so call before visiting.
How can I verify Catherine Krsek Pieroni, FNP's license?
NPPES lists Indiana license number 71001516A, as entered by the provider. Search the Indiana board that licenses this profession; the NPPES record confirms identity only.
How much does Catherine Krsek Pieroni, FNP prescribe under Medicare Part D?
In 2024, Catherine Krsek Pieroni, FNP had 447 Medicare Part D claims for 330 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.