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DR. ANDREW HALLMARK
NPI 1255992855
Anesthesiology in Chicago, IL

Active since June 25, 2019PECOS EnrolledAccepts Medicare Assignment
251 E HURON ST, CHICAGO, IL 60611(630) 933-4800 Get Directions Write a Review

NPPES record last updated: April 6, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Apr 6, 2026, May 24, 2023 (2 updates tracked since 2023).

About Dr. Andrew Hallmark NPPES

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

DR. ANDREW HALLMARK (NPI 1255992855) is an individual anesthesiology provider in Chicago, Illinois, licensed in California (A192127) and active in the NPI registry since June 2019. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of University Of Florida College Of Medicine (2019).

NPPES Registry Identity

NPI1255992855
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameDR. ANDREW HALLMARK
Location Address251 E HURON STChicago, IL 60611-2908
Mailing Address450 Mamaroneck Ave Ste 201Harrison, NY 10528-2436 · (909) 742-2689
Phone(630) 933-4800
Sole ProprietorNo
Medical School CMSUniversity Of Florida College Of MedicineGraduated 2019
Enumeration DateJune 25, 2019
Last NPPES UpdateApril 6, 20262 updates tracked since enumeration
NPPES CertifiedApril 6, 2026
✔ NPI 1255992855 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
Licenses✔ Licensed in CA · A192127✔ Licensed in IL · 036.164135
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 ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X · License 4351044182 (MI)
251 E HURON ST, Chicago, IL 60611
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Secondary Practice Locations 2

Location 12101 N Waterman AveSan Bernardino, CA 92404-4836 · Phone (909) 883-8711
Location 2U of M Department of Anesthesiology, 1500 E Medical Ctr 1H241 UHAnn Arbor, MI 48109-5048 · Phone (734) 936-4280

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

Dr. Andrew Hallmark 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 ID9234464579
PECOS Enrollment IDI20240618004306
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.

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.

MARK WANG M.D.
Pathology (Anatomic Pathology & Clinical Pathology)
251 E HURON ST, FEINBERG PAVILION
CHICAGO, IL 60611
Cook County (312) 503-8144
DR. MARLEY ANN DOYLE M/D.
Psychiatry & Neurology (Psychiatry)
251 E HURON ST, GALTER 3-150, C
CHICAGO, IL 60611
Cook County (312) 926-6895
CASSIDY SCHWAB MD
Anesthesiology
251 E HURON ST
CHICAGO, IL 60611
Cook County (312) 695-0061
SEONG PARK
Internal Medicine
251 E HURON ST
CHICAGO, IL 60611
Cook County (312) 926-2000
EMMA WALLS GREEVER MD
Emergency Medicine
251 E HURON ST
CHICAGO, IL 60611
Cook County (312) 926-2000
NICOLE ELIZABETH TRUPIANO MD
Dermatology
251 E HURON ST
CHICAGO, IL 60611
Cook County (312) 926-2000
ASHRAF SAMHAN MD
Internal Medicine
251 E HURON ST
CHICAGO, IL 60611
Cook County (312) 926-2000
DR. SABINA SPIGNER MD, MS, MPH
Obstetrics & Gynecology
251 E HURON ST
CHICAGO, IL 60611
Cook County (312) 926-2000

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 Andrew Hallmark's NPI number?

The NPI number for Andrew Hallmark is 1255992855. It was assigned to this individual provider in the NPPES registry on June 25, 2019.

Where is Andrew Hallmark located?

Andrew Hallmark practices at 251 E Huron St, Chicago, IL 60611. The listed phone number is (630) 933-4800.

What is Andrew Hallmark's specialty?

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

Is Andrew Hallmark enrolled in Medicare?

Yes. Andrew Hallmark 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.

When was this NPI record last updated?

The NPPES record for Andrew Hallmark was last updated on April 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.