WALKER ASPREY MD
NPI 1124653266
Anesthesiology in Chicago, IL

Q: What is Walker Asprey's NPI number?

The NPI number for Walker Asprey is 1124653266. It was assigned to this individual provider in the NPPES registry on March 9, 2020.

Q: What is Walker Asprey's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Q: When was this NPI record last updated?

The NPPES record for Walker Asprey was last updated on August 28, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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 March 09, 2020PECOS EnrolledAccepts Medicare Assignment

251 E HURON ST STE 5-704, CHICAGO, IL 60611(312) 695-0061(312) 695-9013 Get Directions Write a Review

NPPES record last updated: August 28, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jun 3, 2025, Mar 9, 2020 (2 updates tracked since 2020).

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About Walker Asprey Md NPPES

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

WALKER ASPREY MD (NPI 1124653266) is an individual anesthesiology provider in Chicago, Illinois, licensed in Illinois (036174848) and active in the NPI registry since March 2020. He is enrolled in Medicare PECOS, is affiliated with Northwestern Memorial Hospital, and maintains a secondary practice location in Scottsdale.

NPPES Registry Identity

NPI1124653266

Entity TypeIndividualMale

Primary Taxonomy207L00000X

Provider Legal NameWALKER ASPREYCredential: MD

Location Address251 E HURON ST STE 5-704Chicago, IL 60611-2908

Mailing Address13400 E Shea BlvdScottsdale, AZ 85259-5452

Phone(312) 695-0061

Fax(312) 695-9013

Sole ProprietorYes

Medical School CMSOtherGraduated 2021

Enumeration DateMarch 9, 2020

Last NPPES UpdateAugust 28, 20252 updates tracked since enumeration

NPPES CertifiedAugust 28, 2025

✔ NPI 1124653266 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians

Taxonomy Code207L00000X

License✔ Licensed in IL · 036174848

Definition

An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.

Also ListedInternal Medicine · Cardiovascular DiseaseTaxonomy 207RC0000X · License 036.174848 (IL)

251 E HURON ST STE 5-704, Chicago, IL 60611

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Secondary Practice Location 1

Location 113400 E Shea BlvdScottsdale, AZ 85259-5452 · Phone (507) 696-6418

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Walker Asprey Md 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 ID7719497767

PECOS Enrollment IDI20250609001962

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.

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

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. AMANDA R RAMWELL TOMLINSON MD

Anesthesiology