ASHLEE MICHELLE RITTER CRNA
NPI 1881187797
Nurse Anesthetist, Certified Registered in Chicago, IL
About Ashlee Michelle Ritter Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ASHLEE MICHELLE RITTER CRNA (NPI 1881187797) is an individual nurse anesthetist, certified registered in Chicago, Illinois, licensed in Illinois (209029755) and active in the NPI registry since June 2018. She is enrolled in Medicare PECOS, is affiliated with St David's Medical Center, and maintains a secondary practice location in Austin.
NPPES Registry Identity
Specialties & Licenses
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
Ashlee Michelle Ritter Crna 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
13Medicare enrollment records show Ashlee Ritter reassigns Medicare billing to 13 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chicago, IL 60637
- Reassigned Medicare billing, Illinois enrollment
- 635 clinicians in this Medicare group
Chicago, IL 60637
- Reassigned Medicare billing, Illinois enrollment
- 2,237 clinicians in this Medicare group
Chicago, IL 60612
- Reassigned Medicare billing, Illinois enrollment
- 188 clinicians in this Medicare group
Chicago, IL 60641
- Reassigned Medicare billing, Illinois enrollment
- 21 clinicians in this Medicare group
Dallas, TX 75246
- Reassigned Medicare billing, Texas enrollment
- 2,795 clinicians in this Medicare group
Bryan, TX 77802
- Reassigned Medicare billing, Texas enrollment
- 840 clinicians in this Medicare group
Austin, TX 78750
- Reassigned Medicare billing, Texas enrollment
- Medicare enrollment name: Republic Spine And Pain, PA
- 21 clinicians in this Medicare group
Austin, TX 78757
- Reassigned Medicare billing, Texas enrollment
- 29 clinicians in this Medicare group
Austin, TX 78745
- Reassigned Medicare billing, Texas enrollment
- 175 clinicians in this Medicare group
Austin, TX 78748
- Reassigned Medicare billing, Texas enrollment
- 11 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 3
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.
St David's Medical Center
Acute Care Hospitals · Austin, TXSt David's South Austin Medical Center
Acute Care Hospitals · Austin, TXNorth Austin Medical Center
Acute Care Hospitals · Austin, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60637 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CHICAGO, IL 60637
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 Ashlee Ritter's NPI number?
The NPI number for Ashlee Ritter is 1881187797. It was assigned to this individual provider in the NPPES registry on June 14, 2018.
Where is Ashlee Ritter located?
Ashlee Ritter practices at 5841 S Maryland Ave, Chicago, IL 60637. The listed phone number is (773) 702-1000.
What is Ashlee Ritter's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Ashlee Ritter enrolled in Medicare?
Yes. Ashlee Ritter 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 Ashlee Ritter's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ashlee Ritter reassigns Medicare benefits to 13 organizations: The University Of Chicago Medical Center (Chicago, IL), University Of Chicago (Chicago, IL), University Anesthesiologists Sc (Chicago, IL), Harbor Anesthesia PLLC (Chicago, IL), Scott & White Clinic (Dallas, TX) and 8 more organizations, listed in the Medicare section above. 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 Ashlee Ritter's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ashlee Ritter accept?
Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 6 other insurers list Ashlee Ritter 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 Ashlee Ritter affiliated with any hospitals?
According to CMS data, Ashlee Ritter is affiliated with St David's Medical Center, St David's South Austin Medical Center and North Austin Medical Center.
When was this NPI record last updated?
The NPPES record for Ashlee Ritter was last updated on November 24, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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.
# Ashlee Michelle Ritter, CRNA · NPI 1881187797
Nurse Anesthetist, Certified Registered physician in Chicago, Illinois. Individual provider, active in the CMS NPPES registry since June 14, 2018.
## Identity
- **NPI:** 1881187797 (Entity type: Individual)
- **Enumerated:** June 14, 2018
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 209029755 (Illinois)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 5841 S MARYLAND AVE, Chicago, IL 60637-1443
- **Phone:** (773) 702-1000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging
- **Bills Medicare through:** 13 organizations under Medicare reassignment (form CMS-855R): The University Of Chicago Medical Center (NPI 1033218128, Chicago, IL); University Of Chicago (NPI 1821048786, Chicago, IL); University Anesthesiologists Sc (NPI 1073558136, Chicago, IL); Harbor Anesthesia PLLC (NPI 1205593290, Chicago, IL); Scott & White Clinic (NPI 1649820796, Dallas, TX); and 8 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Louisiana State University School Of Medicine In New Orleans, class of 2018
## Record status
- **NPPES last updated:** November 24, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1881187797) · Data from the CMS NPPES public registry.