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DR. ROBERT MAYER MD
NPI 1669561783
Anesthesiology in Park Ridge, IL

Active since October 12, 2006PECOS Enrolled
1775 W. DEMPSTER, PARK RIDGE, IL 60068(847) 723-2210 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Robert Mayer Md NPPES

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

DR. ROBERT MAYER MD (NPI 1669561783) is an individual anesthesiology provider in Park Ridge, Illinois and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1669561783
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameDR. ROBERT MAYERCredential: MD
Location Address1775 W. DEMPSTERPark Ridge, IL 60068
Mailing Address255 W Michigan AveJackson, MI 49201-2218 · (517) 787-6440 · Fax (517) 787-4146
Phone(847) 723-2210
Sole ProprietorNo
Enumeration DateOctober 12, 2006
Last NPPES UpdateJuly 8, 2007
✔ NPI 1669561783 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
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.
1775 W. DEMPSTER, Park Ridge, IL 60068
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Robert Mayer Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Medicare Billing Reassignment

Medicare enrollment records show Robert Mayer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Illinois Gastroenterology Group, LLC
25 mi
Gastroenterology
745 FLETCHER DRIVE
Elgin, IL 60123
  • Reassigned Medicare billing, Illinois enrollment
  • 235 clinicians in this Medicare group
NPI 1316277817 (847) 888-1300

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 18

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. JEFFREY JOHN PODNAR MD
Anesthesiology
1775 W. DEMPSTER
PARK RIDGE, IL 60068
Cook County (847) 723-2210
DR. MANUEL GONZALEZRAMIREZ MD
Anesthesiology
1775 W. DEMPSTER
PARK RIDGE, IL 60068
Cook County (847) 723-2210
DR. JAE HYUN MD
Anesthesiology
1775 W. DEMPSTER
PARK RIDGE, IL 60068
Cook County (847) 723-2210
MARY KAY BISSING DO
Anesthesiology
1775 W. DEMPSTER
PARK RIDGE, IL 60068
Cook County (847) 723-2210
DR. TODD PATTERSON DO
Anesthesiology
1775 W. DEMPSTER
PARK RIDGE, IL 60068
Cook County (847) 723-2210
DR. VICTOR LICHTENBERG DO
Anesthesiology
1775 W. DEMPSTER
PARK RIDGE, IL 60068
Cook County (847) 723-2210
DR. YOONOK KIM MD
Anesthesiology
1775 W. DEMPSTER
PARK RIDGE, IL 60068
Cook County (847) 723-2210
DR. WILLIAM MILLER MD
Anesthesiology
1775 W. DEMPSTER
PARK RIDGE, IL 60068
Cook County (847) 723-2210

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 Robert Mayer's NPI number?

The NPI number for Robert Mayer is 1669561783. It was assigned to this individual provider in the NPPES registry on October 12, 2006.

Where is Robert Mayer located?

Robert Mayer practices at 1775 W. Dempster, Park Ridge, IL 60068. The listed phone number is (847) 723-2210.

What is Robert Mayer's specialty?

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

Is Robert Mayer enrolled in Medicare?

Yes. Robert Mayer is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Robert Mayer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Robert Mayer reassigns Medicare benefits to Illinois Gastroenterology Group, LLC (Elgin, IL). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Robert Mayer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Robert Mayer was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years 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.