Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MARY ANN HOLLENBACK APN
NPI 1841339405
Nurse Practitioner - Family in Aurora, IL

Q: What is Mary Ann Hollenback's NPI number?

The NPI number for Mary Ann Hollenback is 1841339405. It was assigned to this individual provider in the NPPES registry on February 6, 2007.

Q: What is Mary Ann Hollenback's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Active since February 06, 2007PECOS EnrolledAccepts Medicare Assignment

2020 OGDEN AVE STE 400, AURORA, IL 60504(630) 692-5563(630) 692-5564 Get Directions Write a Review

NPPES record last updated: September 29, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 29, 2026, May 4, 2020, Mar 12, 2020 and 2 more (5 updates tracked since 2017).

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About Mary Ann Hollenback Apn NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARY ANN HOLLENBACK APN (NPI 1841339405) is an individual family provider in Aurora, Illinois, licensed in Illinois (277-000554) and active in the NPI registry since February 2007. She is enrolled in Medicare PECOS, is affiliated with Copley Memorial Hospital, and is a graduate of Other (2006).

NPPES Registry Identity

NPI1841339405

Entity TypeIndividualFemale

Primary Taxonomy363LF0000X

Provider Legal NameMARY ANN HOLLENBACKCredential: APN

Location Address2020 OGDEN AVE STE 400Aurora, IL 60504-5898

Mailing Address2020 Ogden Ave Ste 400Aurora, IL 60504-5898 · (630) 692-5563 · Fax (630) 692-5564

Phone(630) 692-5563

Fax(630) 692-5564

Sole ProprietorNo

Medical School CMSOtherGraduated 2006

Enumeration DateFebruary 6, 2007

Last NPPES UpdateSeptember 29, 20265 updates tracked since enumeration

NPPES CertifiedFebruary 28, 2024

✔ NPI 1841339405 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363LF0000X

License✔ Licensed in IL · 277-000554

2020 OGDEN AVE STE 400, Aurora, IL 60504

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Other Identifiers 2

OtherIL5966IL · Medicare Ptan (group)

OtherIL5966004IL · Medicare Ptan (individual)

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mary Ann Hollenback Apn is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7214039312

PECOS Enrollment IDI20070220000583

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Mary Ann Hollenback reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Rush-Copley Medical Group

Same address

Obstetrics

2020 OGDEN AVENUE, SUITE 225
Aurora, IL 60504

Reassigned Medicare billing, Illinois enrollment
Medicare enrollment name: Rush-Copley Medical Group Nfp
171 clinicians in this Medicare group

NPI 1376643767 (630) 978-4800

Edward Health Ventures

3.3 mi

Family Medicine

1999 SPRINGBROOK SQUARE DR, STE 101
Naperville, IL 60564

Reassigned Medicare billing, Illinois enrollment
561 clinicians in this Medicare group

NPI 1154666766 (630) 305-3025

Central Dupage Hospital Association

11 mi

General Acute Care Hospital

25 NORTH WINFIELD RD.
Winfield, IL 60190

Reassigned Medicare billing, Illinois enrollment
129 clinicians in this Medicare group

NPI 1003864810 (630) 933-1600

Rush University Medical Center

20 mi

Internal Medicine

2011 YORK ROAD, 2ND FLOOR
Oak Brook, IL 60523

Reassigned Medicare billing, Illinois enrollment
Medicare enrollment name: Rush University Medical Group
2,169 clinicians in this Medicare group

NPI 1801375696 (630) 724-1310

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 8

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

316 services258 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

86 services82 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

30 services30 patients

Influenza vaccine, inactivated 90653

The Influenza vaccine, inactivated, is a shot given to protect against the flu. It contains killed virus particles that help your body build immunity to the flu. It's recommended annually to keep your protection up-to-date. It's safe for ages 6 months and up.

25 services25 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

21 services21 patients

Assessment of emotional or behavioral problems 96127

Assessment of emotional or behavioral problems involves a thorough evaluation of your feelings, thoughts, and behaviors. It's a process where professionals study patterns over time to identify potential issues like anxiety, depression, or other mental health conditions.

19 services19 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Copley Memorial Hospital

Acute Care Hospitals · Aurora, IL

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140029

Location2000 Ogden AvenueAurora, IL 60504 · Kane County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60504 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$93.02 typical visit price

range $59.81 – $181.38

Typical copayment $23.25 (range $14.95 – $45.34)

Most-billed visit code 99203

Established Patient

$105.07 typical visit price

range $19.15 – $147.12

Typical copayment $26.26 (range $4.78 – $36.78)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

9 suppliers12 claims23 services$6.37 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 17

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MRS. STEPHANIE Y AMOR-ARTEAGA FNP

Nurse Practitioner (Family)