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HELEN ZAKOS NP
NPI 1003229840
Nurse Practitioner - Critical Care Medicine in Elk Grove Village, IL

Active since June 10, 2014PECOS EnrolledAccepts Medicare Assignment
800 BIESTERFIELD RD STE 510, ELK GROVE VILLAGE, IL 60007(847) 981-3660 Get Directions Write a Review

NPPES record last updated: November 5, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Nov 5, 2024, Apr 6, 2021, Mar 17, 2018 and 1 more (4 updates tracked since 2017).

About Helen Zakos Np NPPES

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

HELEN ZAKOS NP (NPI 1003229840) is an individual critical care medicine provider in Elk Grove Village, Illinois, licensed in Illinois (209011858) and active in the NPI registry since June 2014. She is enrolled in Medicare PECOS, is affiliated with Alexian Brothers Medical Center 1, and maintains a secondary practice location in Arlington Heights.

NPPES Registry Identity

NPI1003229840
Entity TypeIndividualFemale
Primary Taxonomy363LC0200X
Provider Legal NameHELEN ZAKOSCredential: NP
Location Address800 BIESTERFIELD RD STE 510Elk Grove Village, IL 60007-3367
Mailing Address800 Biesterfield Rd Ste 510Elk Grove Village, IL 60007-3367 · (847) 981-3660
Phone(847) 981-3660
Sole ProprietorNo
Medical School CMSOtherGraduated 2014
Enumeration DateJune 10, 2014
Last NPPES UpdateNovember 5, 20244 updates tracked since enumeration
NPPES CertifiedNovember 5, 2024
✔ NPI 1003229840 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 4

★ Primary SpecialtyNurse Practitioner · Critical Care MedicinePhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LC0200X
License✔ Licensed in IL · 209011858
Also ListedNurse Practitioner · Acute CareTaxonomy 363LA2100X · License 209011858 (IL)
Also ListedNurse Practitioner · Adult HealthTaxonomy 363LA2200X · License 209011858 (IL)
Also ListedNurse Practitioner · GerontologyTaxonomy 363LG0600X · License 209011858 (IL)
800 BIESTERFIELD RD STE 510, Elk Grove Village, IL 60007
Open in Google Maps ↗

Secondary Practice Location 1

Location 1800 W Central RdArlington Heights, IL 60005-2349 · Phone (847) 618-1000

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

Helen Zakos Np 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 ID5991027195
PECOS Enrollment IDI20141125000364
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

2

Medicare enrollment records show Helen Zakos reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Alexian Brothers Medical Group Specialty Care
0.1 mi
Specialist
701 BIESTERFIELD RD UNIT 4D
Elk Grove Village, IL 60007
  • Reassigned Medicare billing, Illinois enrollment
  • 29 clinicians in this Medicare group
NPI 1275990061 (855) 692-6482
Critical Care Physicians Of Illinois LLC
23 mi
Critical Care Medicine
2000 OGDEN AVE
Aurora, IL 60504
  • Reassigned Medicare billing, Illinois enrollment
  • 96 clinicians in this Medicare group
NPI 1508134966 (847) 618-1000

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 4

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.

Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
185 services108 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
57 services53 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
33 services28 patients
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
12 services11 patients

Hospital Affiliations CMS Care Compare 2

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

Alexian Brothers Medical Center 1

Acute Care Hospitals · Elk Grove Village, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140258
Location800 Biesterfield RdElk Grove Village, IL 60007 · Cook County
Emergency services Birthing friendly

St Alexius Medical Center

Acute Care Hospitals · Hoffman Estates, IL
4/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number140290
Location1555 N Barrington RdHoffman Estates, IL 60169 · Cook County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60007 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
$94.06 typical visit price
range $60.08 – $183.39
Typical copayment $23.51 (range $15.02 – $45.84)
Most-billed visit code 99203
Established Patient
$105.70 typical visit price
range $18.97 – $148.12
Typical copayment $26.42 (range $4.74 – $37.03)
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.

Other Providers at the Same Location NPPES 14

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

ANURAG MEHROTRA M.D.
Internal Medicine (Critical Care Medicine)
800 BIESTERFIELD RD STE 510
ELK GROVE VILLAGE, IL 60007
Cook County (847) 981-3660
JESSICA DANIELLE JOHNSON M.D.
Internal Medicine (Critical Care Medicine)
800 BIESTERFIELD RD STE 510
ELK GROVE VILLAGE, IL 60007
Cook County (847) 981-3660
DR. AMRIK SIVAKAM RAY M.D.
Internal Medicine (Pulmonary Disease)
800 BIESTERFIELD RD STE 510
ELK GROVE VILLAGE, IL 60007
Cook County (847) 981-3660
JENNIFER JACOBS APRN
Nurse Practitioner (Acute Care)
800 BIESTERFIELD RD STE 510
ELK GROVE VILLAGE, IL 60007
Cook County (847) 981-3660
BIKASH BHATTARAI M.D.
Internal Medicine (Pulmonary Disease)
800 BIESTERFIELD RD STE 510
ELK GROVE VILLAGE, IL 60007
Cook County (847) 981-3660
DR. PIYANUCH PAHN PATARAMEKIN D.O.
Internal Medicine (Pulmonary Disease)
800 BIESTERFIELD RD STE 510
ELK GROVE VILLAGE, IL 60007
Cook County (847) 981-3660
SUSAN JORDAN NP
Nurse Practitioner (Adult Health)
800 BIESTERFIELD RD STE 510
ELK GROVE VILLAGE, IL 60007
Cook County (847) 981-3660
DR. SHAYAN SARTIPI
Internal Medicine (Critical Care Medicine)
800 BIESTERFIELD RD STE 510
ELK GROVE VILLAGE, IL 60007
Cook County (847) 981-3660

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Helen Zakos's NPI number?

The NPI number for Helen Zakos is 1003229840. It was assigned to this individual provider in the NPPES registry on June 10, 2014.

Where is Helen Zakos located?

Helen Zakos practices at 800 Biesterfield Rd Ste 510, Elk Grove Village, IL 60007. The listed phone number is (847) 981-3660.

What is Helen Zakos's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Critical Care Medicine, with taxonomy code 363LC0200X.

Is Helen Zakos enrolled in Medicare?

Yes. Helen Zakos is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Helen Zakos's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Helen Zakos reassigns Medicare benefits to 2 organizations: Alexian Brothers Medical Group Specialty Care (Elk Grove Village, IL) and Critical Care Physicians Of Illinois LLC (Aurora, IL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Helen Zakos's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Helen Zakos affiliated with any hospitals?

According to CMS data, Helen Zakos is affiliated with Alexian Brothers Medical Center 1 and St Alexius Medical Center.

When was this NPI record last updated?

The NPPES record for Helen Zakos was last updated on November 5, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.