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MARY KATHERINE KNIGHT AGACNP
NPI 1336090141
Nurse Practitioner in Chicago, IL

Active since February 06, 2026PECOS EnrolledAccepts Medicare Assignment
675 N SAINT CLAIR ST STE 19-100, CHICAGO, IL 60611(312) 664-3278(312) 695-0063 Get Directions Write a Review

NPPES record last updated: August 21, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 21, 2026, Apr 14, 2026, Feb 6, 2026 (3 updates tracked since 2026).

About Mary Katherine Knight Agacnp NPPES

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

MARY KATHERINE KNIGHT AGACNP (NPI 1336090141) is an individual nurse practitioner in Chicago, Illinois, licensed in Illinois (209035060) and active in the NPI registry since February 2026. She is enrolled in Medicare PECOS, is affiliated with Northwestern Memorial Hospital, and is a graduate of Rush Medical College Of Rush University (2025).

NPPES Registry Identity

NPI1336090141
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameMARY KATHERINE KNIGHTCredential: AGACNP
Location Address675 N SAINT CLAIR ST STE 19-100Chicago, IL 60611-5969
Mailing Address675 N Saint Clair St Ste 19-100Chicago, IL 60611-5969 · (312) 664-3278 · Fax (312) 695-0063
Phone(312) 664-3278
Fax(312) 695-0063
Sole ProprietorNo
Medical School CMSRush Medical College Of Rush UniversityGraduated 2025
Enumeration DateFebruary 6, 2026
Last NPPES UpdateAugust 21, 20263 updates tracked since enumeration
NPPES CertifiedAugust 21, 2026
✔ NPI 1336090141 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
License✔ Licensed in IL · 209035060
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 · Acute CareTaxonomy 363LA2100X · License 2024063129 (IL)
675 N SAINT CLAIR ST STE 19-100, Chicago, IL 60611
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Other Names 1

Other Name (5)Mary Katherine Knight

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

Mary Katherine Knight Agacnp 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 ID2365918901
PECOS Enrollment IDI20260420003581
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 Mary Knight reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Northwestern Medical Faculty Foundation
8.4 mi
Multi-Specialty
DEPT 5777
Carol Stream, IL 60122
  • Reassigned Medicare billing, Illinois enrollment
  • 4,817 clinicians in this Medicare group
NPI 1346235314 (855) 694-2866

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.

Northwestern Memorial Hospital

Acute Care Hospitals · Chicago, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140281
Location251 E Huron StChicago, IL 60611 · Cook County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60611 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.

LAURA J DAVIDSON M.D.
Internal Medicine (Interventional Cardiology)
675 N SAINT CLAIR ST STE 19-100
CHICAGO, IL 60611
Cook County (312) 664-3278
ALISON C BATES PA-C
Physician Assistant
675 N SAINT CLAIR ST STE 19-100
CHICAGO, IL 60611
Cook County (312) 664-3278
MICHAEL JAMES GABER AGACNP-BC
Nurse Practitioner
675 N SAINT CLAIR ST STE 19-100
CHICAGO, IL 60611
Cook County (312) 664-3278
REBEKKAH SOBOLEWSKI
Nurse Practitioner
675 N SAINT CLAIR ST STE 19-100
CHICAGO, IL 60611
Cook County (312) 695-4965
DR. PRIYA FREANEY M.D.
Internal Medicine (Cardiovascular Disease)
675 N SAINT CLAIR ST STE 19-100
CHICAGO, IL 60611
Cook County (312) 695-4965
KERRY SHANKLIN FNP
Nurse Practitioner (Family)
675 N SAINT CLAIR ST STE 19-100
CHICAGO, IL 60611
Cook County (312) 664-3278
ANTHONY JACOB SPYCHALSKI APRN, AGACNP-BC
Nurse Practitioner
675 N SAINT CLAIR ST STE 19-100
CHICAGO, IL 60611
Cook County (312) 664-3278
EMILY KATHERINE BRAKMAN APRN, CNP
Nurse Practitioner
675 N SAINT CLAIR ST STE 19-100
CHICAGO, IL 60611
Cook County (312) 664-3278

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 Mary Knight's NPI number?

The NPI number for Mary Knight is 1336090141. It was assigned to this individual provider in the NPPES registry on February 6, 2026. The provider is also known as Mary Katherine Knight.

Where is Mary Knight located?

Mary Knight practices at 675 N Saint Clair St Ste 19-100, Chicago, IL 60611. The listed phone number is (312) 664-3278.

What is Mary Knight's specialty?

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

Is Mary Knight enrolled in Medicare?

Yes. Mary Knight 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 organization bills Medicare for Mary Knight's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mary Knight reassigns Medicare benefits to Northwestern Medical Faculty Foundation (Carol Stream, IL). 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 Mary Knight's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Mary Knight affiliated with any hospitals?

According to CMS data, Mary Knight is affiliated with Northwestern Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Mary Knight was last updated on August 21, 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.