Sidney Chastang, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

041094 Issued in GA

Practice address

1121 Johnson Ferry Rd Ste 205
Marietta, GA 30068-5425

Phone

(770) 485-3837

Fax

(470) 377-4468

NPI assigned

Oct 18, 2005

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

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

Internal Medicine

Education

University of Alabama School of Medicine, 1992

Medicare assignment

May accept Medicare assignment

Telehealth

Offers telehealth services

Practice addresses (Care Compare)

Hospital & facility affiliations

• Wellstar Kennestone Regional Medical Center Hospital, Marietta, GA, CCN 110035
• Northside Hospital Hospital, Atlanta, GA, CCN 110161
• Wellstar North Fulton Medical Center Hospital, Roswell, GA, CCN 110198
• Wellstar Windy Hill Hospital Long-term care hospital, Marietta, GA, CCN 112007

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: sidney.chastang.1@20066.direct.athenahealth.com
• FHIR API: https://api.platform.athenahealth.com/20066/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 and National Provider Directory roles.

• Optimal Health Care, LLC

  • Internal Medicine Physician
  • Marietta, GA
  • NPI 1255776134
  Medicare reassignment NPD Authorized official
• Wellstar Medical Group, LLC

  • Internal Medicine Physician
  • Marietta, GA
  • NPI 1174829741
  NPD (past)

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

• Kennestone Hospital, Inc.

  • General Acute Care Hospital
  • Marietta, GA
  • NPI 1649248626
  Care Compare affiliation
• Kennestone Hospital, Inc.

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

  Long-term care hospital

  Care Compare affiliation
• Northside Hospital, Inc.

  • General Acute Care Hospital
  • Atlanta, GA
  • NPI 1457396079
  Care Compare affiliation
• Wellstar North Fulton Hospital, Inc

  • General Acute Care Hospital
  • Roswell, GA
  • NPI 1750312997
  Care Compare affiliation

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

{
    "created_epoch": "1129593600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1744761600000",
    "number": "1720077225",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1121 JOHNSON FERRY RD STE 205",
            "city": "MARIETTA",
            "state": "GA",
            "postal_code": "300685425"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1121 JOHNSON FERRY RD STE 205",
            "city": "MARIETTA",
            "state": "GA",
            "postal_code": "300685425",
            "telephone_number": "770-485-3837",
            "fax_number": "470-377-4468"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CHASTANG",
        "first_name": "SIDNEY",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2005-10-18",
        "last_updated": "2025-04-16",
        "certification_date": "2025-04-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "GA",
            "license": "041094",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Gregory L. Charlop, MD
• Charnat LLC
• Debbi Chartash, PT
• Sophia Charyton
• Mark Alan Chastain, MD
• Nikulkumar Rupabhai Chaudhari, M.D.
• Sanjeet R Chaudhary, D.M.D.
• Tia Lavarion Chay, DNP, PMHNP-BC
• Luckana Chaya, MD
• Rachel Darlene Check, DO

• Internal Medicine Physician in Marietta, GA
• Providers in Marietta, GA by specialty
• Internal Medicine Physician in Georgia

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 16, 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.