LAUREN BONZELAAR MD, MS
NPI 1396109153
Anesthesiology in Chicago, IL

Q: What is Lauren Bonzelaar's NPI number?

The NPI number for Lauren Bonzelaar is 1396109153. It was assigned to this individual provider in the NPPES registry on April 7, 2016.

Q: What is Lauren Bonzelaar'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 Lauren Bonzelaar was last updated on May 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since April 07, 2016PECOS 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: May 13, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: May 13, 2026, Jun 10, 2020, Jul 15, 2016 (3 updates tracked since 2016).

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About Lauren Bonzelaar Md, Ms NPPES

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

LAUREN BONZELAAR MD, MS (NPI 1396109153) is an individual anesthesiology provider in Chicago, Illinois, licensed in Illinois (036.149779) and active in the NPI registry since April 2016. She is enrolled in Medicare PECOS, is affiliated with Northwestern Memorial Hospital, and is a graduate of R Franklin University Of Med & Sci/chicago Medical School (2015).

NPPES Registry Identity

NPI1396109153

Entity TypeIndividualFemale

Primary Taxonomy207L00000X

Provider Legal NameLAUREN BONZELAARCredential: MD, MS

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

Mailing Address251 E Huron StChicago, IL 60611-2908

Phone(312) 695-0061

Fax(312) 695-9013

Sole ProprietorNo

Medical School CMSR Franklin University Of Med & Sci/chicago Medical SchoolGraduated 2015

Enumeration DateApril 7, 2016

Last NPPES UpdateMay 13, 20263 updates tracked since enumeration

NPPES CertifiedMay 13, 2026

✔ NPI 1396109153 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians

Taxonomy Code207L00000X

License✔ Licensed in IL · 036.149779

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.

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

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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

Lauren Bonzelaar Md, Ms 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 ID6305132275

PECOS Enrollment IDI20200911002038

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.

Areas of Expertise CMS Part B claims 6

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Anesthesia for lens surgery 00142

Anesthesia for lens surgery involves administering medication to numb the eye area, ensuring you feel no pain during the procedure. This can be a local anesthetic (numbing only the eye area) or general (where you're asleep). It helps make the surgery comfortable and stress-free.

55 services54 patients

Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 00731

This procedure involves the use of an endoscope, a flexible tube with a light and camera, to examine your esophagus, stomach, or upper small bowel. Anesthesia ensures you are comfortable and pain-free during the procedure.

42 services41 patients

Anesthesia for other procedure on large bowel using an endoscope 00811

Anesthesia for an endoscopic procedure on the large bowel ensures comfort and relaxation during the procedure. You'll be given medication to make you drowsy or asleep, eliminating any discomfort. The medication can be administered through a vein or inhaled.

18 services18 patients

Anesthesia for procedure on gallbladder, pancreas, or liver using an endoscope 00732

This procedure involves using an endoscope, a flexible tube with a light and camera, to examine or treat your gallbladder, pancreas, or liver. Anesthesia is administered to ensure you're comfortable and pain-free during the procedure.

14 services12 patients

Anesthesia for other closed procedure on chest 00520

Anesthesia for a closed chest procedure involves the use of medications to block sensation, ensuring you don't feel pain during the procedure. It can be general (you're asleep) or regional (part of your body is numbed). This helps maintain comfort and safety.

12 services12 patients

Anesthesia for procedure on small and large bowel using an endoscope 00813

Anesthesia for an endoscopic procedure on the small and large bowel ensures comfort and relaxation during the procedure. It involves administering medicine to help you sleep or feel drowsy. This allows the doctor to examine your bowels without causing you discomfort or pain.

11 services11 patients

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

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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