Mary Ann Hollenback, APN
Family Nurse Practitioner · Aurora, IL
Mary Ann Hollenback, APN is a family nurse practitioner with a practice address in Aurora, Illinois, and NPI 1841339405, issued on Feb 6, 2007. Check the license (Illinois 277-000554, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary Ann Hollenback
- Credential
- APN
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 277-000554 IL
Self-reported in NPPES; status is on the state search - Practice location
- 2020 Ogden Ave Ste 400, Aurora, IL 60504
- Phone
- (630) 692-5563
- Enumerated
- Feb 6, 2007
- Record last updated
- Feb 28, 2024
- Fax
- (630) 692-5564
- Medicare enrollment
- Enrolled (PECOS I20070220000583); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 7,639 in Illinois → Look up another NPI →
Also registered at 2020 Ogden Ave Ste 400
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mary Ann Hollenback in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 277-000554Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% more Medicare Part D claims than the average family nurse practitioner in 2024
2,257 Medicare Part D claims for 510 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 23 claims were for opioids.
Most prescribed
- Atorvastatin Calcium172 claims
- Amlodipine Besylate79 claims
- Gabapentin66 claims
- Losartan Potassium61 claims
- Metformin Hcl61 claims
- Metoprolol Succinate60 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 2 group practices
- Rush University Medical GroupChicago, IL
- Rush-Copley Medical Group NfpYorkville, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Ann Hollenback among 7,639 family nurse practitioner records in Illinois
Mary Ann Hollenback, APN 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 2007, is newer than 5% of them.
- NPI issued2007 · 5% of these records are older, 92% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2006 · 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).
122 family nurse practitioner records list a practice address in Aurora
They are 122 of the 3,342 NPPES records with a practice address in Aurora, and 7,639 family nurse practitioner records in Illinois.
All 7,639 in Illinois → Every provider in Aurora → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Claire Anderson, APN, FNP-BCAurora, IL 605041902981459
- Lisa Bastian, APNAurora, IL 605041972910883
- Ruth Fernandez, NP-CAurora, IL 605041144683277
- Thomas Gulino, APN, RN, ONCAurora, IL 605041952432239
- Hillary Knowles, DNPAurora, IL 605041215211768
- Melinda Moncrief, NP-CAurora, IL 605041821489568
- Noreen Pierandozzi, FNPAurora, IL 605041851834774
- Amber Rodriguez, NP-CAurora, IL 605041356888689
Common questions
What is Mary Ann Hollenback, APN's NPI number?
Mary Ann Hollenback, APN's National Provider Identifier (NPI) is 1841339405, issued on Feb 6, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mary Ann Hollenback, APN located?
The NPPES record lists a practice address at 2020 Ogden Ave Ste 400, Aurora, IL, 60504. Phone: (630) 692-5563. Providers update this record themselves, so call before visiting.
How can I verify Mary Ann Hollenback, APN's license?
NPPES lists Illinois license number 277-000554, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Mary Ann Hollenback, APN prescribe under Medicare Part D?
In 2024, Mary Ann Hollenback, APN had 2,257 Medicare Part D claims for 510 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.