Ryan T Chassereau, CRNA

Primary specialty

Certified Registered Nurse AnesthetistTaxonomy code 367500000X

License

1226 Issued in SC

Practice address

7 Independence PT Ste 300
Greenville, SC 29615-4569

Phone

(864) 522-3700

NPI assigned

May 8, 2006

Last updated

Feb 11, 2026By the provider in NPPES

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in SC

Enrollment records 1

Specialty

Certified Registered Nurse Anesthetist (Crna)

Education

Medical University of South Carolina College of Medicine, 1988

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Lexington Health IncGroup PAC ID 2567872070, 905 clinicians

Prisma Health University Medical GroupGroup PAC ID 8325950983, 2,467 clinicians

Anmed HealthGroup PAC ID 1951215243, 348 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Lexington Medical Center Hospital, West Columbia, SC, CCN 420073
• Anmed Health Hospital, Anderson, SC, CCN 420027

Merit-based Incentive Payment System (MIPS)

Final score

84.09 of 100Reported as group

Quality

68.87

Promoting interoperability

100

Improvement activities

40

Cost

78.11

Merit-based Incentive Payment System (MIPS)

Final score

80.41 of 100Reported as group

Quality

64.93

Promoting interoperability

99

Improvement activities

40

Medicare enrollment (NPD)

Not enrolled

HHS exclusion list flag

CMS’s directory marks this NPI as on an HHS exclusion list; no matching OIG record was found. The OIG exclusions file (LEIE) holds no record for this NPI, and the directory does not say which list the flag comes from. How exclusions are shown Confirm with the OIG exclusions search.

Credentials

Certified Registered Nurse

State licenses

Practice roles

Locations

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.

• Lexington Health Inc

  dba Lexington Orthopaedic and Sports Medicine

  • Sports Medicine (Orthopaedic Surgery) Physician
  • West Columbia, SC
  • NPI 1710634753
  Medicare reassignment Care Compare group NPD
• Anmed Health

  dba AnMed

  • Emergency Medicine Physician
  • Anderson, SC
  • NPI 1710918321
  Medicare reassignment Care Compare group
• Prisma Health University Medical Group

  • Family Medicine Physician
  • Greenville, SC
  • NPI 1295763217
  Medicare reassignment Care Compare group
• Musc Community Physicians

  dba MUSC Community Physicians Specialty

  • Internal Medicine Physician
  • Bamberg, SC
  • NPI 1841878006
  Medicare reassignment NPD
• Anmed Health

  dba AnMed Primary Care - Piedmont

  • Family Medicine Physician
  • Piedmont, SC
  • NPI 1255137832
  NPD
• Anmed Health

  dba AnMed

  • Emergency Medicine Physician
  • Anderson, SC
  • NPI 1588685333

  Nurse Anesthetist, Certified Registered

  NPD
• Diagnostic Radiology of Anderson, P.a.

  • Diagnostic Radiology Physician
  • Anderson, SC
  • NPI 1922125269
  NPD
• Lexington County Health Services District Inc

  dba Lexington Medical Center

  • General Acute Care Hospital
  • West Columbia, SC
  • NPI 1356366314
  NPD
• Lexington Health Inc

  dba Lexington Internal Medicine

  • Internal Medicine Physician
  • West Columbia, SC
  • NPI 1942190988
  NPD
• Lexington Health Inc

  dba Lexington Medical Anesthesiology

  • Anesthesiology Physician
  • West Columbia, SC
  • NPI 1942808159

  Nurse Anesthetist, Certified Registered

  NPD
• Musc Community Physicians

  dba MUSC Health Primary Care - Bowman

  • Rural Health Clinic/Center
  • Bowman, SC
  • NPI 1225735772
  NPD
• Musc Community Physicians

  dba MUSC Community Physicians PC

  • Family Medicine Physician
  • Bamberg, SC
  • NPI 1992383145
  NPD

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

• Anmed Health

  dba AnMed

  • General Acute Care Hospital
  • Anderson, SC
  • NPI 1417919531
  Care Compare affiliation
• Lexington Health Inc

  dba Lexington Medical Center

  • General Acute Care Hospital
  • West Columbia, SC
  • NPI 1386241834
  Care Compare affiliation

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

{
    "created_epoch": "1147046400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1770768000000",
    "number": "1184673139",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "300 E MCBEE AVE FL 4",
            "city": "GREENVILLE",
            "state": "SC",
            "postal_code": "296012842",
            "telephone_number": "864-522-8603"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "7 INDEPENDENCE PT STE 300",
            "city": "GREENVILLE",
            "state": "SC",
            "postal_code": "296154569",
            "telephone_number": "864-522-3700"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2720 Sunset Blvd",
            "address_purpose": "LOCATION",
            "city": "West Columbia",
            "state": "SC",
            "postal_code": "291694810",
            "country_code": "US",
            "telephone_number": "803-791-2000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "102 Buckland Way",
            "address_purpose": "LOCATION",
            "city": "Greenville",
            "state": "SC",
            "postal_code": "296156042",
            "country_code": "US",
            "telephone_number": "864-286-9946",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "800 N Fant St",
            "address_purpose": "LOCATION",
            "city": "Anderson",
            "state": "SC",
            "postal_code": "296215708",
            "country_code": "US",
            "telephone_number": "864-512-1000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "CHASSEREAU",
        "first_name": "RYAN",
        "middle_name": "T",
        "name_prefix": "Mrs.",
        "credential": "CRNA",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-05-08",
        "last_updated": "2026-02-11",
        "certification_date": "2026-02-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "367500000X",
            "taxonomy_group": "",
            "desc": "Nurse Anesthetist, Certified Registered",
            "state": "SC",
            "license": "1226",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "rchassereau4206@direct.lexmed.com",
            "affiliation": "N",
            "address_1": "2720 Sunset Blvd",
            "city": "West Columbia",
            "state": "SC",
            "country_code": "US",
            "postal_code": "291694810",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Charleston RX LLC (Sweetgrass Pharmacy & Compounding)
• Grazyna Jadwiga Charowska, M.D.
• Artur Adam Charowski, MD
• Nova Chart, PHARMD
• Stacey Lynn Terpko Chase, PA
• William Elijah Chastain, MD
• Cynthia Chasteen
• Heidi Renee Chasteen
• Caroline Chatain, NP
• Gregoire Paul Chatain, MD

• Certified Registered Nurse Anesthetist in Greenville, SC
• Providers in Greenville, SC by specialty
• Certified Registered Nurse Anesthetist in South Carolina

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 11, 2026; 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.