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ALLISON JANE CHAPMAN APRN, CNP
NPI 1184432122
Nurse Practitioner in Chicago, IL

Active since December 23, 2024PECOS EnrolledAccepts Medicare Assignment
675 N SAINT CLAIR ST STE 19-100, CHICAGO, IL 60611(312) 664-3278(312) 695-5774 Get Directions Write a Review

NPPES record last updated: March 3, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Mar 3, 2026, Dec 23, 2024 (2 updates tracked since 2024).

About Allison Jane Chapman Aprn, Cnp NPPES

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

ALLISON JANE CHAPMAN APRN, CNP (NPI 1184432122) is an individual nurse practitioner in Chicago, Illinois, licensed in Illinois (209031391) and active in the NPI registry since December 2024. She is enrolled in Medicare PECOS, is affiliated with Northwestern Memorial Hospital, and is a graduate of Other (2024).

NPPES Registry Identity

NPI1184432122
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameALLISON JANE CHAPMANCredential: APRN, CNP
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) 695-5774
Phone(312) 664-3278
Fax(312) 695-5774
Sole ProprietorNo
Medical School CMSOtherGraduated 2024
Enumeration DateDecember 23, 2024
Last NPPES UpdateMarch 3, 20262 updates tracked since enumeration
NPPES CertifiedMarch 3, 2026
✔ NPI 1184432122 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 · 209031391
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.
675 N SAINT CLAIR ST STE 19-100, Chicago, IL 60611
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Other Names 1

Former Name (1)Allison Jane Comstock

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

Allison Jane Chapman Aprn, Cnp 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 ID5496275448
PECOS Enrollment IDI20250221000490
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

2

Medicare enrollment records show Allison Chapman reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

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
Endeavor Health Medical Group
25 mi
Allergy & Immunology
1000 CENTRAL ST
Evanston, IL 60201
  • Reassigned Medicare billing, Illinois enrollment
  • 4,841 clinicians in this Medicare group
NPI 1497701882 (847) 570-5235

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 Allison Chapman's NPI number?

The NPI number for Allison Chapman is 1184432122. It was assigned to this individual provider in the NPPES registry on December 23, 2024. The provider is also known as Allison Jane Comstock.

Where is Allison Chapman located?

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

What is Allison Chapman's specialty?

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

Is Allison Chapman enrolled in Medicare?

Yes. Allison Chapman 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 Allison Chapman's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Allison Chapman reassigns Medicare benefits to 2 organizations: Northwestern Medical Faculty Foundation (Carol Stream, IL) and Endeavor Health Medical Group (Evanston, 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 Allison Chapman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Allison Chapman affiliated with any hospitals?

According to CMS data, Allison Chapman is affiliated with Northwestern Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Allison Chapman was last updated on March 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.