MARGARET CLAIRE RIGAMER
NPI 1235454968
Surgery - Vascular Surgery in Chicago, IL
About Margaret Claire Rigamer NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARGARET CLAIRE RIGAMER (NPI 1235454968) is an individual vascular surgery provider in Chicago, Illinois, licensed in Illinois (036.146827) and active in the NPI registry since April 2010. She is enrolled in Medicare PECOS, is affiliated with John H Stroger Jr Hospital, and is a graduate of Other (2010).
NPPES Registry Identity
Specialties & Licenses 2
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
Margaret Claire Rigamer 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 Reassignments
2Medicare enrollment records show Margaret Rigamer reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chicago, IL 60612
- Reassigned Medicare billing, Illinois enrollment
- 1,047 clinicians in this Medicare group
Chicago, IL 60612
- Reassigned Medicare billing, Illinois enrollment
- 646 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 4
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
John H Stroger Jr Hospital
Acute Care Hospitals · Chicago, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60612 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CHICAGO, IL 60612
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 Margaret Rigamer's NPI number?
The NPI number for Margaret Rigamer is 1235454968. It was assigned to this individual provider in the NPPES registry on April 6, 2010.
Where is Margaret Rigamer located?
Margaret Rigamer practices at 1901 W Harrison St Dept Of, Chicago, IL 60612. The listed phone number is (312) 864-0224.
What is Margaret Rigamer's specialty?
The primary specialty registered for this NPI is Surgery, specializing in Vascular Surgery, with taxonomy code 2086S0129X.
Is Margaret Rigamer enrolled in Medicare?
Yes. Margaret Rigamer 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 organizations bill Medicare for Margaret Rigamer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Rigamer reassigns Medicare benefits to 2 organizations: Cook County (Chicago, IL) and Mount Sinai Community Foundation (Chicago, IL). Each 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 Margaret Rigamer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Margaret Rigamer accept?
Health plans from Ambetter Health and Ambetter Health of Delaware list Margaret Rigamer 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 Margaret Rigamer affiliated with any hospitals?
According to CMS data, Margaret Rigamer is affiliated with John H Stroger Jr Hospital.
When was this NPI record last updated?
The NPPES record for Margaret Rigamer was last updated on April 28, 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.
# Margaret Claire Rigamer · NPI 1235454968
Vascular Surgery physician in Chicago, Illinois. Individual provider, active in the CMS NPPES registry since April 6, 2010.
## Identity
- **NPI:** 1235454968 (Entity type: Individual)
- **Enumerated:** April 6, 2010
- **Primary specialty:** Surgery - Vascular Surgery · taxonomy 2086S0129X
- **State license:** 036.146827 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 1901 W HARRISON ST DEPT OF, Chicago, IL 60612-3714
- **Phone:** (312) 864-0224
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Cook County (NPI 1245350040, Chicago, IL); Mount Sinai Community Foundation (NPI 1609072313, Chicago, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2010
## Record status
- **NPPES last updated:** April 28, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1235454968) · Data from the CMS NPPES public registry.