Ashlee Michelle Ritter, CRNA

Primary specialty

Certified Registered Nurse AnesthetistTaxonomy code 367500000X

License

209029755 Issued in IL

Practice address

5841 S Maryland Ave
Chicago, IL 60637-1443

Phone

(773) 702-1000

NPI assigned

Jun 14, 2018

Last updated

Nov 24, 2025By the provider in NPPES

Sex

Female

Sole proprietor

Yes

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Addresses

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in TX, FL, IL3 enrollments

Enrollment records 3

Specialty

Certified Registered Nurse Anesthetist (Crna)

Education

Louisiana State University School of Medicine in New Orleans, 2018

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

University of ChicagoGroup PAC ID 7719899426, 1,674 clinicians

Capitol Pain Institute PAGroup PAC ID 9436244522, 40 clinicians

Austin Anesthesiology Group PLLCGroup PAC ID 0547256497, 430 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• St David's Medical Center Hospital, Austin, TX, CCN 450431
• St David's South Austin Medical Center Hospital, Austin, TX, CCN 450713
• The University of Chicago Medical Center Hospital, Chicago, IL, CCN 140088
• North Austin Medical Center Hospital, Austin, TX, CCN 450809

Medicare enrollment (NPD)

Enrolled

Credentials

Certified Registered Nurse

State licenses

Practice roles

Locations (25 of 36)

Interoperability endpoints

• Direct secure messaging: aritter323074@uchospital.direct-ci.com
• FHIR API: https://api.platform.athenahealth.com/18125/brand/1/csg/1/fhir/r4

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• University of Chicago

  • Multi-Specialty Clinic/Center
  • Chicago, IL
  • NPI 1821048786
  Medicare reassignment Care Compare group NPD
• Austin Anesthesiology Group, PLLC

  • Anesthesiology Physician
  • Austin, TX
  • NPI 1598724304

  Nurse Anesthetist, Certified Registered

  Medicare reassignment Care Compare group NPD
• Capitol Pain Institute, PA

  dba Capitol Pain Institute

  • Pain Medicine (Anesthesiology) Physician
  • Austin, TX
  • NPI 1548303985

  Nurse Anesthetist, Certified Registered

  Medicare reassignment Care Compare group NPD
• Harbor Anesthesia PLLC

  • Anesthesiology Physician
  • Chicago, IL
  • NPI 1205593290
  Medicare reassignment NPD
• The University of Chicago Medical Center

  • General Acute Care Hospital
  • Chicago, IL
  • NPI 1033218128
  Medicare reassignment NPD
• University Anesthesiologists SC

  • Anesthesiology Physician
  • Chicago, IL
  • NPI 1073558136

  Nurse Anesthetist, Certified Registered

  Medicare reassignment NPD
• Anesthesia Dynamics LLC

  • Anesthesiology Physician
  • Bradenton, FL
  • NPI 1073001012

  Nurse Anesthetist, Certified Registered, TX

  Medicare reassignment NPD
• Austin Gastroenterology Anesthesia Associates PLLC

  • Anesthesiology Physician
  • Austin, TX
  • NPI 1427405810

  Nurse Anesthetist, Certified Registered

  Medicare reassignment NPD
• DRS. Ellis, Rojas, Ross & Debs, Inc.

  dba Kendall Anesthesia Associates

  • Anesthesiology Physician
  • Miami, FL
  • NPI 1255313169

  Nurse Anesthetist, Certified Registered

  Medicare reassignment NPD
• Miami Anesthesia Services LLC

  • Anesthesiology Physician
  • Aventura, FL
  • NPI 1821475179

  Nurse Anesthetist, Certified Registered

  Medicare reassignment NPD
• Republic Spine and Pain, P.a.

  • Interventional Pain Medicine Physician
  • Austin, TX
  • NPI 1831410323
  Medicare reassignment NPD
• Scott & White Clinic

  dba Baylor Scott & White Clinic - Temple

  • Internal Medicine Physician
  • Temple, TX
  • NPI 1093779704
  Medicare reassignment NPD

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• The University of Chicago Medical Center

  • General Acute Care Hospital
  • Chicago, IL
  • NPI 1508956509
  Care Compare affiliation
• St Davids Healthcare Partnership LP LLP

  dba North Austin Medical Center

  • General Acute Care Hospital
  • Austin, TX
  • NPI 1629021845
  Care Compare affiliation
• St. David's Healthcare Partnership, L.P., LLP

  dba St. David's South Austin Medical Center

  • General Acute Care Hospital
  • Austin, TX
  • NPI 1679528889
  Care Compare affiliation
• St. Davids Healthcare Partnership, L.P., LLP

  dba Heart Hospital of Austin

  • General Acute Care Hospital
  • Austin, TX
  • NPI 1720033947
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1528934400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1763942400000",
    "number": "1881187797",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "150 HARVESTER DR STE 300",
            "city": "BURR RIDGE",
            "state": "IL",
            "postal_code": "605275965"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5841 S MARYLAND AVE",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606371443",
            "telephone_number": "773-702-1000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "8015 Shoal Creek Blvd Ste 103",
            "address_purpose": "LOCATION",
            "city": "Austin",
            "state": "TX",
            "postal_code": "787578051",
            "country_code": "US",
            "telephone_number": "512-467-7246",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "RITTER",
        "first_name": "ASHLEE",
        "middle_name": "MICHELLE",
        "credential": "CRNA",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2018-06-14",
        "last_updated": "2025-11-24",
        "certification_date": "2025-11-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "367500000X",
            "taxonomy_group": "",
            "desc": "Nurse Anesthetist, Certified Registered",
            "state": "IL",
            "license": "209029755",
            "primary": true
        },
        {
            "code": "367500000X",
            "taxonomy_group": "",
            "desc": "Nurse Anesthetist, Certified Registered",
            "state": "TX",
            "license": "AP145894",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "aritter918435@direct.sw.org",
            "affiliation": "N",
            "address_1": "2401 S 31st St",
            "city": "Temple",
            "state": "TX",
            "country_code": "US",
            "postal_code": "765084870",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Judith Elen Ritholz, MD
• Wouter Ritsema, MD
• Kathryn Rittenberg, PT
• Timothy James Rittenberry, M.D.
• Kristen Kathleen Rittenmeyer, L.C.S.W.
• Heather Ritter, RDN
• Mark Thomas Ritter, APRN, CRNA
• Noel Edwin Ritter, LCPC
• Olivia Josephine Ritter, LPC
• Sarah Ritter, APN

• Certified Registered Nurse Anesthetist in Chicago, IL
• Providers in Chicago, IL by specialty
• Certified Registered Nurse Anesthetist in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 24, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.