Ivy Millar Enger, APN-CNP
Family Nurse Practitioner · Naperville, IL
Ivy Millar Enger, APN-CNP is a family nurse practitioner with a practice address in Naperville, Illinois, and NPI 1003348103, issued on Mar 29, 2017. Check the license (Illinois 209014938, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ivy Millar Enger
- Credential
- APN-CNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 209014938 IL
Self-reported in NPPES; status is on the state search - Practice location
- 100 Spalding Dr Ste 206, Naperville, IL 60540
- Phone
- (630) 646-7250
- Enumerated
- Mar 29, 2017
- Record last updated
- Apr 11, 2024
- Fax
- (630) 548-7743
- Medicare enrollment
- Enrolled (PECOS I20170809000944); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 7,639 in Illinois → Look up another NPI →
Also registered at 100 Spalding Dr Ste 206
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ivy Millar Enger in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 209014938Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% fewer Medicare Part D claims than the average family nurse practitioner in 2024
817 Medicare Part D claims for 232 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 63% of claims.
Most prescribed
- Lantus Solostar71 claims
- Metformin Hcl Er67 claims
- Ozempic59 claims
- Nano 2nd Gen Pen Needle46 claims
- Trulicity45 claims
- Levothyroxine Sodium40 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: $65.84
3 payments; by number, the most common kind was food and beverage; the largest payer was Beta Bionics, Inc. The 99,489 providers of this specialty with any payment received $650.95 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
- Endeavor Health Medical GroupNaperville, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ivy Millar Enger among 7,639 family nurse practitioner records in Illinois
Ivy Millar Enger, APN-CNP is one of 7,639 family nurse practitioner records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 37% of them.
- NPI issued2017 · 37% of these records are older, 56% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2016 · median 2018 among the 4,778 with a school on file
- Record last updated2024 · 39% 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 Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
100 family nurse practitioner records list a practice address in Naperville
They are 100 of the 4,634 NPPES records with a practice address in Naperville, and 7,639 family nurse practitioner records in Illinois.
All 7,639 in Illinois → Every provider in Naperville → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Megan Biederman, NPNaperville, IL 605401316276538
- Michael Coffel, FNP-BCNaperville, IL 605401275795866
- Jessica Harnish, NPNaperville, IL 605401427453539
- Jennifer Hemmelgarn, CNPNaperville, IL 605401720394208
- Alison Lennhardt, FNP-CNaperville, IL 605401366866501
- Cheryl Lorenzin, NPNaperville, IL 605401417226986
- Shannon Messerges, NP-CNaperville, IL 605401528430725
- Abigail Murphy, APNNaperville, IL 605401164812988
Common questions
What is Ivy Millar Enger, APN-CNP's NPI number?
Ivy Millar Enger, APN-CNP's National Provider Identifier (NPI) is 1003348103, issued on Mar 29, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Ivy Millar Enger, APN-CNP located?
The NPPES record lists a practice address at 100 Spalding Dr Ste 206, Naperville, IL, 60540. Phone: (630) 646-7250. Providers update this record themselves, so call before visiting.
How can I verify Ivy Millar Enger, APN-CNP's license?
NPPES lists Illinois license number 209014938, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Ivy Millar Enger, APN-CNP prescribe under Medicare Part D?
In 2024, Ivy Millar Enger, APN-CNP had 817 Medicare Part D claims for 232 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.