CHRISTY MARKS FNP
NPI 1619429909
Nurse Practitioner in Chicago, IL

Q: What is Christy Marks's NPI number?

The NPI number for Christy Marks is 1619429909. It was assigned to this individual provider in the NPPES registry on November 2, 2016. The provider is also known as Christy L Marks Fnp.

Q: What is Christy Marks's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Christy Marks was last updated on August 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.

Active since November 02, 2016PECOS Enrolled

1650 W HARRISON ST, CHICAGO, IL 60612(312) 942-3326 Get Directions Write a Review

NPPES record last updated: August 17, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 17, 2026, Aug 14, 2024, Jul 30, 2019 and 4 more (7 updates tracked since 2016).

On this page

About Christy Marks Fnp NPPES

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

CHRISTY MARKS FNP (NPI 1619429909) is an individual nurse practitioner in Chicago, Illinois, licensed in Tennessee (34634) and active in the NPI registry since November 2016. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1619429909

Entity TypeIndividualFemale

Primary Taxonomy363L00000X

Provider Legal NameCHRISTY MARKSCredential: FNP

Location Address1650 W HARRISON STChicago, IL 60612-3800

Mailing Address1650 W Harrison StChicago, IL 60612-3800

Phone(312) 942-3326

Sole ProprietorNo

Enumeration DateNovember 2, 2016

Last NPPES UpdateAugust 17, 20267 updates tracked since enumeration

NPPES CertifiedAugust 17, 2026

✔ NPI 1619429909 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363L00000X

Licenses✔ Licensed in TN · 34634✔ Licensed in IL · 209014969

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.

Also ListedNurse Practitioner · FamilyTaxonomy 363LF0000X · License 71009098A (IN), 209014969 (IL)

1650 W HARRISON ST, Chicago, IL 60612

Open in Google Maps ↗

Other Names 1

Professional Name (2)Christy L Marks Fnp

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Christy Marks Fnp 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 Christy Marks reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Physicians Immediate Care North Chicago LLC

7.0 mi

Urgent Care

4211 N CICERO AVE, SUITE 100
Chicago, IL 60641

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

NPI 1205814118 (815) 713-2738

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 60612 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 20

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

SHAINA MANN M.D.

Hospitalist

1650 W HARRISON ST, SUITE 466
CHICAGO, IL 60612

Cook County (312) 942-5000

KATE ANN BUCHHEIT MPT

Specialist