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CLAIRE ANASTOS NP
NPI 1265022693
Nurse Practitioner in Grayslake, IL

Active since January 20, 2021PECOS EnrolledAccepts Medicare Assignment
100/100
CMS Quality Rating
312 LIONEL DR, GRAYSLAKE, IL 60030(847) 704-2280 Get Directions Write a Review

NPPES record last updated: August 30, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Claire Anastos Np NPPES

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

CLAIRE ANASTOS NP (NPI 1265022693) is an individual nurse practitioner in Grayslake, Illinois, licensed in Illinois (209022672) and active in the NPI registry since January 2021. She is enrolled in Medicare PECOS, is affiliated with Advocate Illinois Masonic Medical Center, and maintains a secondary practice location in Libertyville.

NPPES Registry Identity

NPI1265022693
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameCLAIRE ANASTOSCredential: NP
Location Address312 LIONEL DRGrayslake, IL 60030-2758
Mailing Address312 Lionel DrGrayslake, IL 60030-2758 · (847) 704-2280
Phone(847) 704-2280
Sole ProprietorYes
Medical School CMSOtherGraduated 2020
Enumeration DateJanuary 20, 2021
Last NPPES UpdateAugust 30, 2024
NPPES CertifiedAugust 30, 2024
✔ NPI 1265022693 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License✔ Licensed in IL · 209022672
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
312 LIONEL DR, Grayslake, IL 60030
Open in Google Maps ↗

Secondary Practice Location 1

Location 1890 Garfield Ave Ste 206Libertyville, IL 60048-3100 · Phone (847) 816-7495 · Fax (847) 816-7497

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

Claire Anastos 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 ID3173921210
PECOS Enrollment IDI20211005000285
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

3

Medicare enrollment records show Claire Anastos reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Infectious Disease Consultants Of Northern Illinois S.C.
3.6 mi
Infectious Disease
1880 W WINCHESTER RD, SUITE 106
Libertyville, IL 60048
  • Reassigned Medicare billing, Illinois enrollment
  • Medicare enrollment name: Infectious Disease Consultants Of Northern Illinois Sc
  • 6 clinicians in this Medicare group
NPI 1356680300 (847) 672-4940
Lake County Acute Care, LLP
4.3 mi
Family Medicine
2 E ROLLINS RD
Round Lake Beach, IL 60073
  • Reassigned Medicare billing, Illinois enrollment
  • 38 clinicians in this Medicare group
NPI 1356448542 (847) 740-2500
Cepamerica Illinois LLP
5.5 mi
Emergency Medicine
801 S MILWAUKEE AVE
Libertyville, IL 60048
  • Reassigned Medicare billing, Illinois enrollment
  • 982 clinicians in this Medicare group
NPI 1740906577 (847) 990-5300

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

Hospital Affiliations CMS Care Compare

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

Advocate Illinois Masonic Medical Center

Acute Care Hospitals · Chicago, IL
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140182
Location836 West Wellington AvenueChicago, IL 60657 · Cook County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60030 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

100/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality100
Improvement Activities40
Cost94.69

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 Claire Anastos's NPI number?

The NPI number for Claire Anastos is 1265022693. It was assigned to this individual provider in the NPPES registry on January 20, 2021.

Where is Claire Anastos located?

Claire Anastos practices at 312 Lionel Dr, Grayslake, IL 60030. The listed phone number is (847) 704-2280.

What is Claire Anastos's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Claire Anastos enrolled in Medicare?

Yes. Claire Anastos 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 Claire Anastos's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Claire Anastos reassigns Medicare benefits to 3 organizations: Infectious Disease Consultants Of Northern Illinois S.C. (Libertyville, IL), Lake County Acute Care, LLP (Round Lake Beach, IL) and Cepamerica Illinois LLP (Libertyville, 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 Claire Anastos's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Claire Anastos affiliated with any hospitals?

According to CMS data, Claire Anastos is affiliated with Advocate Illinois Masonic Medical Center.

When was this NPI record last updated?

The NPPES record for Claire Anastos was last updated on August 30, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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.