John Chia-Su Chao, MD

Primary specialty

Orthopaedic Surgery PhysicianTaxonomy code 207X00000X

License

69558 Issued in GA

Practice address

5505 Peachtree Dunwoody Rd
Suite 600
Atlanta, GA 30342-1705

Phone

(404) 355-0743

Fax

(404) 355-2136

NPI assigned

Jul 17, 2007

Last updated

Mar 2, 2026By 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 5

Addresses

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in GA

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

Orthopedic Surgery

Education

University of Texas Southwestern Medical School at Dallas, 2007

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Peachtree Orthopaedic Clinic of Georgia, LLCGroup PAC ID 3072041748, 15 clinicians

Peachtree Orthopaedic Clinic PAGroup PAC ID 4587552963, 138 clinicians

Physiotherapy Associates IncGroup PAC ID 3577470442, shared by 50 NPIs, 1,432 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Accentcare Home Health of Georgia Home health agency, Roswell, GA, CCN 117131
• Northside Hospital Hospital, Atlanta, GA, CCN 110161
• Northside Hospital Forsyth Hospital, Cumming, GA, CCN 110005
• Northeast Georgia Medical Center, Inc Hospital, Gainesville, GA, CCN 110029
• Wellstar Windy Hill Hospital Long-term care hospital, Marietta, GA, CCN 112007

Merit-based Incentive Payment System (MIPS)

Final score

94.9 of 100Reported as group

Promoting interoperability

94

Improvement activities

40

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: john.chao.1@8474.direct.athenahealth.com

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.

• Peachtree Orthopaedic Clinic PA

  • Orthopaedic Surgery Physician
  • Atlanta, GA
  • NPI 1811912611
  Medicare reassignment Care Compare group NPD
• Peachtree Orthopaedic Clinic of Georgia, LLC

  dba Peachtree Orthopedics at Braselton

  • Orthopaedic Surgery Physician
  • Braselton, GA
  • NPI 1033943105
  Care Compare group
• Peachtree Orthopaedic Clinic

  • Durable Medical Equipment & Medical Supplies
  • Alpharetta, GA
  • NPI 1588802474
  NPD
• Peachtree Orthopaedic Clinic, P.a.

  dba Peachtree Orthopaedic Physical Therapy

  • Physical Therapist
  • Atlanta, GA
  • NPI 1659664399
  NPD
• Peachtree Orthopaedic Surgery Center-North, LLC

  • Ambulatory Surgical Clinic/Center
  • Cumming, GA
  • NPI 1093389421
  NPD (past)

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

• Guardian Home Care, LLC

  dba AccentCare Home Health of Georgia

  • Home Health Agency
  • Roswell, GA
  • NPI 1992736227
  Care Compare affiliation
• Kennestone Hospital, Inc.

  dba Wellstar Windy Hill Hospital

  • Long Term Care Hospital
  • Marietta, GA
  • NPI 1700853041

  Long-term care hospital

  Care Compare affiliation
• Northeast Georgia Medical Center, Inc.

  • General Acute Care Hospital
  • Gainesville, GA
  • NPI 1427055821
  Care Compare affiliation
• Northside Hospital, Inc.

  dba Northside Hospital Forsyth

  • General Acute Care Hospital
  • Cumming, GA
  • NPI 1376574277
  Care Compare affiliation
• Northside Hospital, Inc.

  dba Northside Hospital

  • General Acute Care Hospital
  • Atlanta, GA
  • NPI 1457396079
  Care Compare affiliation

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

{
    "created_epoch": "1184630400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1772409600000",
    "number": "1871792945",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5505 PEACHTREE DUNWOODY RD",
            "address_2": "SUITE 600",
            "city": "ATLANTA",
            "state": "GA",
            "postal_code": "303421705",
            "telephone_number": "404-355-0743",
            "fax_number": "404-355-2136"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5505 PEACHTREE DUNWOODY RD",
            "address_2": "SUITE 600",
            "city": "ATLANTA",
            "state": "GA",
            "postal_code": "303421705",
            "telephone_number": "404-355-0743",
            "fax_number": "404-355-2136"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CHAO",
        "first_name": "JOHN",
        "middle_name": "CHIA-SU",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-07-17",
        "last_updated": "2026-03-02",
        "certification_date": "2026-03-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207X00000X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery",
            "state": "TX",
            "license": "P1974",
            "primary": false
        },
        {
            "code": "207X00000X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery",
            "state": "GA",
            "license": "69558",
            "primary": true
        },
        {
            "code": "207XS0114X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery, Adult Reconstructive Orthopaedic Surgery",
            "state": "TX",
            "license": "P1974",
            "primary": false
        },
        {
            "code": "207XX0004X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery, Foot and Ankle Surgery",
            "state": "TX",
            "license": "P1974",
            "primary": false
        },
        {
            "code": "207XX0801X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery, Orthopaedic Trauma",
            "state": "TX",
            "license": "P1974",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "CONNECT",
            "endpointTypeDescription": "CONNECT URL",
            "endpoint": "https://esmd.officeally.io:8291/Gateway/DocumentSubmission/2_0/NhinService/XDRRequest_Service",
            "affiliation": "Y",
            "endpointDescription": "2.16.840.1.113883.3.2019.3",
            "affiliationName": "Bluemark LLC / Office Ally",
            "use": "OTHER",
            "useDescription": "Other",
            "useOtherDescription": "CMS esMD eMDR",
            "address_1": "1300 SE Cardinal Court, Suite 190",
            "city": "Vancouver",
            "state": "WA",
            "country_code": "US",
            "postal_code": "98683",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

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• Chantilly Homecare
• Rachel Marie Chapais, NP
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• Chapman & Friends Healthcare Providers of Georgia
• Chapman Advisory, Inc. (dba RxConfirm or MTMConsultant)
• Chapman Partnership (Impact My Youth)

• Orthopaedic Surgery Physician in Atlanta, GA
• Providers in Atlanta, GA by specialty
• Orthopaedic Surgery Physician in Georgia

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 2, 2026; 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.