Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Natalie Simak, MD

Individual provider Anesthesiology Physician · NPI 1306208228

Natalie Simak, MD practises Anesthesiology in Chicago, Illinois. Qualified in 2016, 10 years ago. Practices with Anesthesia Associates, Ltd, a 36-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
10
Licensed in
IL
In the registry since
2016
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

8420 W Bryn Mawr Ave Ste 300
Chicago, IL 60631-3436
Phone: (773) 756-5780
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence 125.068622 (IL)

Record details

NPI number1306208228
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 22, 2016
Last updated in NPPESJune 13, 2024
Certification dateJune 13, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyANESTHESIOLOGY
Medical schoolOTHER
Graduated 2016 (10 years in practice)
Group practice Anesthesia Associates, Ltd — 36 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients162
Services billed 168 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Anesthesia Associates, Ltd

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 36 clinicians in the practice; 12 are shown here.

Other providers in Chicago