John Jeonhwan CHI, MD

Primary specialty

Plastic Surgery within the Head & Neck (Otolaryngology) PhysicianTaxonomy code 207YX0007X

License

2013009580 Issued in MO

Practice address

1044 N Mason Rd
Dept Otolaryngology, Ste L10
Creve Coeur, MO 63141-6431

Phone

(314) 996-3880

Fax

(314) 996-8610

NPI assigned

Jul 5, 2007

Last updated

Sep 4, 2025By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Other identifiers 1

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in MO

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Plastic and Reconstructive SurgeryAlso: Otolaryngology

Education

Other, 2007

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Washington UniversityGroup PAC ID 9830008770, 2,968 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Barnes Jewish Hospital Hospital, Saint Louis, MO, CCN 260032
• Barnes-Jewish West County Hospital Hospital, Creve Coeur, MO, CCN 260162

Merit-based Incentive Payment System (MIPS)

Final score

84.2 of 100Reported as group

Quality

71.6

Promoting interoperability

100

Improvement activities

40

Cost

75.75

Procedures performed for Medicare patients

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

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: jchi155563@direct.carenet.org

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.

• Washington University

  • Multi-Specialty Clinic/Center
  • Saint Louis, MO
  • NPI 1356381842
  Medicare reassignment Care Compare group NPD
• Washington University

  • Multi-Specialty Clinic/Center
  • Saint Louis, MO
  • NPI 1962442475
  NPD
• Ozarks Medical Center

  dba Ozarks Healthcare

  • General Acute Care Hospital
  • West Plains, MO
  • NPI 1831115641
  NPD (past)
• Washington University

  • Multi-Specialty Clinic/Center
  • Saint Louis, MO
  • NPI 1134169568
  NPD (past)

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

• Barnes Jewish Hospital

  • General Acute Care Hospital
  • Saint Louis, MO
  • NPI 1649299827
  Care Compare affiliation
• Barnes Jewish West County Hospital

  • General Acute Care Hospital
  • Saint Louis, MO
  • NPI 1831107895
  Care Compare affiliation

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

{
    "created_epoch": "1183593600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1756944000000",
    "number": "1689872368",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 7412011",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606742011",
            "telephone_number": "314-996-3880",
            "fax_number": "314-996-8610"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1044 N MASON RD",
            "address_2": "DEPT OTOLARYNGOLOGY, STE L10",
            "city": "CREVE COEUR",
            "state": "MO",
            "postal_code": "631416431",
            "telephone_number": "314-996-3880",
            "fax_number": "314-996-8610"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "915 N Grand Blvd",
            "address_purpose": "LOCATION",
            "city": "Saint Louis",
            "state": "MO",
            "postal_code": "631061621",
            "country_code": "US",
            "telephone_number": "314-652-4100",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "CHI",
        "first_name": "JOHN",
        "middle_name": "JEONHWAN",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-07-05",
        "last_updated": "2025-09-04",
        "certification_date": "2025-09-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207YX0007X",
            "taxonomy_group": "",
            "desc": "Otolaryngology, Plastic Surgery within the Head & Neck",
            "state": "MO",
            "license": "2013009580",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "200006351",
            "state": "MO"
        }
    ],
    "endpoints": [
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicproxy.et0965.epichosted.com/FHIRProxy/api/FHIR/DSTU2/",
            "affiliation": "Y",
            "affiliationName": "Washington University",
            "address_1": "1044 N Mason Rd",
            "address_2": "Dept Otolaryngology, Ste L10",
            "city": "Creve Coeur",
            "state": "MO",
            "country_code": "US",
            "postal_code": "631416431",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Alexander George Chamessian, MD PHD
• Noelle Chandler
• Amie C Chang, P.A.
• Divya Chauhan, M.D.
• Kemin Chen, PA
• Meridith Childers, COTA/L
• Childrens Endocrine Care of St. Louis, LLC
• Chiropractic Care & Sports Rehab, Inc.
• Audrey Nicole Christen, BCBA
• Cassadi Christenson, LCP

• Plastic Surgery within the Head & Neck (Otolaryngology) Physician in Creve Coeur, MO
• Providers in Creve Coeur, MO by specialty
• Plastic Surgery within the Head & Neck (Otolaryngology) Physician in Missouri

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 4, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• 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.