ROBERT JOSEPH GREGORY
NPI 1215399878
Anesthesiology in Milwaukee, WI
About Robert Joseph Gregory NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ROBERT JOSEPH GREGORY (NPI 1215399878) is an individual anesthesiology provider in Milwaukee, Wisconsin, licensed in North Carolina (2021-00257) and active in the NPI registry since March 2016. He is enrolled in Medicare PECOS, is affiliated with Memorial Medical Center, and maintains a secondary practice location in Chicago.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Robert Joseph Gregory 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.
Medicare Billing Reassignment
Medicare enrollment records show Robert Gregory reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Springfield, IL 62781
- Reassigned Medicare billing, Illinois enrollment
- 26 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 5
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.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Memorial Medical Center
Acute Care Hospitals · Springfield, ILAbraham Lincoln Memorial Hospital
Critical Access Hospitals · Lincoln, ILTaylorville Memorial Hospital
Critical Access Hospitals · Taylorville, ILOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
WAUWATOSA, WI 53226
MILWAUKEE, WI 53226
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 Gregory's NPI number?
The NPI number for Robert Gregory is 1215399878. It was assigned to this individual provider in the NPPES registry on March 23, 2016.
Where is Robert Gregory located?
Robert Gregory practices at 8701 W Watertown Plank Rd, Milwaukee, WI 53226. The listed phone number is (414) 805-6102.
What is Robert Gregory's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Robert Gregory enrolled in Medicare?
Yes. Robert Gregory 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.
Which organization bills Medicare for Robert Gregory's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Robert Gregory reassigns Medicare benefits to Memorial Medical Center (Springfield, 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 Gregory's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Robert Gregory accept?
Health plans from Cigna Healthcare list Robert Gregory as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Robert Gregory affiliated with any hospitals?
According to CMS data, Robert Gregory is affiliated with Memorial Medical Center, Abraham Lincoln Memorial Hospital and Taylorville Memorial Hospital.
When was this NPI record last updated?
The NPPES record for Robert Gregory was last updated on June 15, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.