Callan Marcus, APN
Nurse Practitioner · Naperville, IL
Callan Marcus, APN is a nurse practitioner with a practice address in Naperville, Illinois, and NPI 1144692021, issued on Oct 30, 2015. Check the license (Illinois 209013352, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Callan Marcus
- Credential
- APN
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License numbers
- 209013352 IL
APN.0993388-NP CO
Self-reported in NPPES; status is on the state search - Practice location
- 2007 95TH St, Naperville, IL 60564
- Phone
- (630) 646-6593
- Enumerated
- Oct 30, 2015
- Record last updated
- Nov 22, 2019 (not updated in 7 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 4,892 in Illinois → Look up another NPI →
Also registered at 2007 95TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jennifer Chludzinski, APN-CNSNurse Practitioner1538156567
- Maria Dai, P.A.Physician Assistant1235361726
- Laurel George, MDPediatrics Physician1649202789
- Joseph Giordano, DOFamily Medicine Physician1275520934
- Aristidis Hatzidimitriadis, MDInternal Medicine Physician1508027855
Verify Callan Marcus in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 209013352Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average nurse practitioner in 2024
24 Medicare Part D claims, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Atorvastatin Calcium24 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.
Callan Marcus among 4,892 nurse practitioner records in Illinois
Callan Marcus, APN is one of 4,892 nurse practitioner records with a practice address in Illinois. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 31% of them.
- NPI issued2015 · 31% of these records are older, 64% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2019 · 36% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
122 nurse practitioner records list a practice address in Naperville
They are 122 of the 4,634 NPPES records with a practice address in Naperville, and 4,892 nurse practitioner records in Illinois.
All 4,892 in Illinois → Every provider in Naperville → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Jennifer Chludzinski, APN-CNSNaperville, IL 605641538156567
- Tina Doretti, APNNaperville, IL 605641750912770
- Amy DusekNaperville, IL 605641669837001
- Kimberly Gubbins, APN ,CPNP, IBCLCNaperville, IL 605641659675601
- Terri Hannon, APN-CNaperville, IL 605641497965487
- Sara Horvath, APN-CNPNaperville, IL 605641871024786
- Tara Klaus, APNNaperville, IL 605641609341072
- Courtney Kornsey, FNP-CNaperville, IL 605641285263996
Common questions
What is Callan Marcus, APN's NPI number?
Callan Marcus, APN's National Provider Identifier (NPI) is 1144692021, issued on Oct 30, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Callan Marcus, APN located?
The NPPES record lists a practice address at 2007 95TH St, Naperville, IL, 60564. Phone: (630) 646-6593. Providers update this record themselves, so call before visiting.
How can I verify Callan Marcus, APN's license?
NPPES lists Illinois license number 209013352, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Callan Marcus, APN prescribe under Medicare Part D?
In 2024, Callan Marcus, APN had 24 Medicare Part D claims; 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.