Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Rebecca Maria Gerlach, MD

Individual provider Anesthesiology Physician · NPI 1043643323

Dr. Rebecca Maria Gerlach, MD practises Anesthesiology in Chicago, Illinois. Qualified in 2008, 18 years ago. Practices with Unm Medical Group Inc, a 1,060-clinician group and accepts Medicare assignment. Licensed in California, Illinois and New Mexico.

Years since qualifying
18
Licensed in
CA, IL, NM
In the registry since
2013
Specialties on file
3
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

5841 S Maryland Ave MC4028
Chicago, IL 60637-1447
Phone: (773) 702-6700
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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 MD2020-0729 (NM)
Anesthesiology Physician Taxonomy 207L00000X · Licence 036136442 (IL)
Anesthesiology Physician Taxonomy 207L00000X · Licence A126860 (CA)

Record details

NPI number1043643323
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 9, 2013
Last updated in NPPESMarch 5, 2025
Certification dateMarch 5, 2025

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolOTHER
Graduated 2008 (18 years in practice)
Group practice Unm Medical Group Inc — 1060 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients101
Services billed 177 a service is one billed item, such as a visit, a test or a procedure
Average patient age70

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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Unm Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1060 clinicians in the practice; 12 are shown here.

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