What is Helen Zakos's NPI number?

Helen Zakos's National Provider Identifier (NPI) is 1003229840, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Helen Zakos's specialty?

Helen Zakos is listed in the NPPES registry with a primary specialty of Critical Care Medicine Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).

Where is Helen Zakos located?

Helen Zakos's practice location on file with NPPES is 800 Biesterfield Rd Ste 510, Elk Grove Village, IL 60007-3367.

What is Helen Zakos's phone number?

The practice phone number listed in the NPPES registry for Helen Zakos is (847) 981-3660.

Does Helen Zakos accept Medicare?

Helen Zakos is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Helen Zakos's NPI active?

Yes — Helen Zakos's NPI (1003229840) is active in the NPPES registry as of the last update on 2024-11-05.

IndividualActiveAccepts Medicare

Helen Zakos, NP

NPI 1003229840 · Critical Care Medicine Nurse Practitioner · Elk Grove Village, IL

Helen Zakos, NP is a Critical Care Medicine Nurse Practitioner provider in Elk Grove Village, IL (NPI 1003229840).

Provider details

NPI number: 1003229840
Entity type: Individual
Primary specialty: Critical Care Medicine Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Credential: NP
Sex: Female
Sole proprietor: No
License: 209011858 (IL)

Practice location

800 Biesterfield Rd Ste 510

Elk Grove Village, IL 60007-3367

Phone: (847) 981-3660

Street-level locationGet directions

More IL providers

Mailing address

800 Biesterfield Rd Ste 510

Elk Grove Village, IL 60007-3367

Specialties & taxonomies

Critical Care Medicine Nurse PractitionerPrimary363LC0200XLicense 209011858 (IL)
Physician Assistants & Advanced Practice Nursing Providers
Acute Care Nurse Practitioner363LA2100XLicense 209011858 (IL)
Physician Assistants & Advanced Practice Nursing Providers
Adult Health Nurse Practitioner363LA2200XLicense 209011858 (IL)
Physician Assistants & Advanced Practice Nursing Providers
Gerontology Nurse Practitioner363LG0600XLicense 209011858 (IL)
Physician Assistants & Advanced Practice Nursing Providers

Additional practice locations (2)

800 W Central Rd
Arlington Heights, IL 60005-2349
Phone: (847) 618-1000
800 W Central Rd
Arlington Heights, IL 60005-2349
Phone: (847) 618-1000

Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Detailed profile(86/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure25% of score
12 yrs in NPPES registry
Profile completeness25% of score
100% of core fields populated
Practice footprint15% of score
3 documented practice locations
Medicare service volume (vs. specialty peers)25% of score
287 Medicare services, 2024 (ranked within specialty)
Open Payments transparency10% of score
Has Open Payments disclosures (2024)

Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Critical Care, First 30-74 Minutes99291	185	$188
Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233	57	$104
Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232	33	$69
Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231	12	$44

Typical Medicare-allowed amounts for these services range $44–$188 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$161 across 9 records (Open Payments 2024)

Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.

Enumerated: 2014-06-10
Last updated: 2024-11-05
Certified: 2024-11-05

Frequently asked questions

What is Helen Zakos's NPI number?: Helen Zakos's National Provider Identifier (NPI) is 1003229840, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Helen Zakos's specialty?: Helen Zakos is listed in the NPPES registry with a primary specialty of Critical Care Medicine Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
Where is Helen Zakos located?: Helen Zakos's practice location on file with NPPES is 800 Biesterfield Rd Ste 510, Elk Grove Village, IL 60007-3367.
What is Helen Zakos's phone number?: The practice phone number listed in the NPPES registry for Helen Zakos is (847) 981-3660.
Does Helen Zakos accept Medicare?: Helen Zakos is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Helen Zakos's NPI active?: Yes — Helen Zakos's NPI (1003229840) is active in the NPPES registry as of the last update on 2024-11-05.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Critical Care, First 30-74 Minutes99291	185	$188
Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233	57	$104
Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232	33	$69
Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231	12	$44

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$161 across 9 records (Open Payments 2024)

Provider details

Practice location

Mailing address

Specialties & taxonomies

Additional practice locations (2)

Profile Score

What this provider does (Medicare)

Transparency — industry payments

Registry dates

Frequently asked questions

Specialties & taxonomies

Additional practice locations (2)

Frequently asked questions

Profile Score

What this provider does (Medicare)

Transparency — industry payments