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MRS. CHRISTIE MARIE WALKER
NPI 1215557590
Nurse Practitioner - Neonatal in Riverhead, NY

Active since April 16, 2020PECOS Enrolled
1 HEROES WAY, RIVERHEAD, NY 11901(631) 548-6000 Get Directions Write a Review

NPPES record last updated: July 1, 2024. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jul 1, 2024, Sep 24, 2020, Apr 16, 2020 (3 updates tracked since 2020).

About Mrs. Christie Marie Walker NPPES

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

MRS. CHRISTIE MARIE WALKER (NPI 1215557590) is an individual neonatal provider in Riverhead, New York, licensed in New York (350500) and active in the NPI registry since April 2020. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1215557590
Entity TypeIndividualFemale
Primary Taxonomy363LN0000X
Provider Legal NameMRS. CHRISTIE MARIE WALKER
Location Address1 HEROES WAYRiverhead, NY 11901-2054
Mailing Address264 Schoenfeld BlvdPatchogue, NY 11772-2737 · (631) 365-5477
Phone(631) 548-6000
Sole ProprietorNo
Enumeration DateApril 16, 2020
Last NPPES UpdateJuly 1, 20243 updates tracked since enumeration
NPPES CertifiedJuly 1, 2024
✔ NPI 1215557590 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · NeonatalPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LN0000X
License✔ Licensed in NY · 350500
Also ListedRegistered Nurse · Neonatal Intensive CareTaxonomy 163WN0002X · License 647568 (NY)
1 HEROES WAY, Riverhead, NY 11901
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mrs. Christie Marie Walker is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Reassignment

Medicare enrollment records show Christie Walker reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

North Shore-Lij Medical PC
57 mi
Urology
1010 NORTHERN BLVD STE 110
Great Neck, NY 11021
  • Reassigned Medicare billing, New York enrollment
  • 9,353 clinicians in this Medicare group
NPI 1053688572 (516) 321-7400

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11901 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
$105.06 typical visit price
range $67.40 – $203.53
Typical copayment $26.26 (range $16.85 – $50.88)
Most-billed visit code 99203
Established Patient
$117.62 typical visit price
range $21.66 – $164.45
Typical copayment $29.40 (range $5.41 – $41.11)
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 20

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

DR. ORSEOLA ARAPI MD
Student in an Organized Health Care Education/Training Program
1 HEROES WAY
RIVERHEAD, NY 11901
Suffolk County (631) 546-6446
DR. NICOLE MELISSA CASTRO DO
Student in an Organized Health Care Education/Training Program
1 HEROES WAY
RIVERHEAD, NY 11901
Suffolk County (631) 548-6446
JOANNE ELIZABETH COTRONE RPA-C
Physician Assistant
1 HEROES WAY
RIVERHEAD, NY 11901
Suffolk County (631) 548-6200
JARED VINCENT NASSO DO
Student in an Organized Health Care Education/Training Program
1 HEROES WAY
RIVERHEAD, NY 11901
Suffolk County (631) 548-6446
MARCELA TROCHA MD, MSC
Student in an Organized Health Care Education/Training Program
1 HEROES WAY
RIVERHEAD, NY 11901
Suffolk County (631) 548-6446
SANOORI WELMILLAGE DO
Student in an Organized Health Care Education/Training Program
1 HEROES WAY
RIVERHEAD, NY 11901
Suffolk County (631) 548-6446
COURTNEY MALIA CLEMONS
Physician Assistant
1 HEROES WAY
RIVERHEAD, NY 11901
Suffolk County (631) 548-6000
KASIDY SMITH PA-C
Physician Assistant
1 HEROES WAY
RIVERHEAD, NY 11901
Suffolk County (631) 538-8860

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 Christie Walker's NPI number?

The NPI number for Christie Walker is 1215557590. It was assigned to this individual provider in the NPPES registry on April 16, 2020.

Where is Christie Walker located?

Christie Walker practices at 1 Heroes Way, Riverhead, NY 11901. The listed phone number is (631) 548-6000.

What is Christie Walker's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Neonatal, with taxonomy code 363LN0000X.

Is Christie Walker enrolled in Medicare?

Yes. Christie Walker is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Christie Walker's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Christie Walker reassigns Medicare benefits to North Shore-Lij Medical PC (Great Neck, NY). The 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 Christie Walker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Christie Walker was last updated on July 1, 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.