William Elijah Chastain, MD

Primary specialty

Hospitalist PhysicianTaxonomy code 208M00000X

License

2020-02273 Issued in NC

Practice address

701 Grove Rd FL 5
Greenville, SC 29605-4210

Phone

(864) 455-4411

NPI assigned

Sep 13, 2007

Last updated

Jun 30, 2026By the provider in NPPES

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 8

Addresses

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in GA, SC, MN, NC, ME, LA, AK7 enrollments

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 7

Specialty

Internal Medicine

Education

Other, 2007

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Spartanburg Medical CenterGroup PAC ID 3072425297, 1,060 clinicians

Belle Chasse Physician Services LLCGroup PAC ID 9335379379, 258 clinicians

Novant Health Medical Group, LLCGroup PAC ID 1153234893, 2,413 clinicians

Southeastern Hospitalist Services PCGroup PAC ID 3476855420, 301 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Grand Strand Regional Medical Center Hospital, Myrtle Beach, SC, CCN 420085
• Spartanburg Medical Center Hospital, Spartanburg, SC, CCN 420007
• Ochsner Medical Center Acute Hospital, New Orleans, LA, CCN 190036
• Essentia Health St Joseph's Medical Center Hospital, Brainerd, MN, CCN 240075
• Novant Health Brunswick Medical Center Hospital, Supply, NC, CCN 340158

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations (25 of 37)

Interoperability endpoints

• Direct secure messaging: wchastain1721189@direct.novanthealth.org
• Direct secure messaging: wchastain384304@direct.mmc.mainehealth.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.

• Southeastern Hospitalist Services PC

  • Hospitalist Physician
  • Myrtle Beach, SC
  • NPI 1003280108

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• Spartanburg Medical Center

  dba Medical Group of the Carolinas - Emergency Medicine

  • Emergency Medicine Physician
  • Spartanburg, SC
  • NPI 1699729939
  Medicare reassignment Care Compare group NPD
• Belle Chasse Physician Services LLC

  • Hospitalist Physician
  • Terrytown, LA
  • NPI 1245653237
  Medicare reassignment Care Compare group NPD
• Novant Health Medical Group, LLC

  dba Novant Health Pediatric Neurology & Sleep

  • Neurology with Special Qualifications in Child Neurology Physician
  • Charlotte, NC
  • NPI 1366409492
  Medicare reassignment Care Compare group NPD
• Pelham Medical Center

  dba Medical Group of the Carolinas - Emergency Medicine - Pelham

  • Emergency Medicine Physician
  • Greer, SC
  • NPI 1619133568
  Medicare reassignment NPD
• Prisma Health University Medical Group

  • Family Medicine Physician
  • Greenville, SC
  • NPI 1295763217

  Internal Medicine

  Medicare reassignment NPD
• Cogent Healthcare of Georgia PC

  • Internal Medicine Physician
  • Macon, GA
  • NPI 1609827823
  Medicare reassignment NPD
• Hospital Physician Services - Southeast Professional Corporation

  • Hospitalist Physician
  • Monroe, GA
  • NPI 1760410385

  NC, SC

  Medicare reassignment NPD
• Mainehealth

  dba Mainehealth Behavioral Health

  • Psychiatric Hospital
  • Westbrook, ME
  • NPI 1790265502
  Medicare reassignment NPD
• Northeast Georgia Physicians Group Inc

  • Family Medicine Physician
  • Gainesville, GA
  • NPI 1891745212

  Internal Medicine

  Medicare reassignment NPD
• The Duluth Clinic LTD

  dba Essentia Health Cloquet Clinic

  • Multi-Specialty Clinic/Center
  • Cloquet, MN
  • NPI 1902563638
  Medicare reassignment NPD
• Hospital Medicine of Ak, LLC

  • Hospitalist Physician
  • Anchorage, AK
  • NPI 1346947470
  Medicare reassignment

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

• Grand Strand Regional Medical Center LLC

  dba Grand Strand Medical Center

  • General Acute Care Hospital
  • Myrlte Beach, SC
  • NPI 1083668669
  Care Compare affiliation
• Spartanburg Medical Center

  dba Spartanburg Medical Center- Psychiatric Unit

  • Psychiatric Hospital Unit
  • Spartanburg, SC
  • NPI 1033681630
  Care Compare affiliation
• Spartanburg Medical Center

  • Family Medicine Physician
  • Spartanburg, SC
  • NPI 1326373697

  Hospital

  Care Compare affiliation
• Spartanburg Medical Center

  • General Acute Care Hospital
  • Spartanburg, SC
  • NPI 1609807122
  Care Compare affiliation
• Spartanburg Medical Center

  dba Spartanburg Medical Center-Center for Rehabilitative Medicine

  • Rehabilitation Hospital Unit
  • Spartanburg, SC
  • NPI 1942772546
  Care Compare affiliation
• Brunswick Community Hospital, LLC

  dba Novant Health Brunswick Medical Center

  • General Acute Care Hospital
  • Bolivia, NC
  • NPI 1710915756
  Care Compare affiliation
• Ochsner Clinic Foundation

  dba Ochsner Medical Center Acute

  • General Acute Care Hospital
  • New Orleans, LA
  • NPI 1811973100
  Care Compare affiliation
• St. Joseph's Medical Center

  dba Essentia Health St. Joseph's -Brainerd Clinic

  • General Practice Physician
  • Brainerd, MN
  • NPI 1184866956

  Hospital

  Care Compare affiliation
• St. Joseph's Medical Center

  dba St. Joseph's Medical Center Anesthesia Associates

  • Anesthesiology Physician
  • Brainerd, MN
  • NPI 1336465038

  Hospital

  Care Compare affiliation
• St. Joseph's Medical Center

  dba Essentia Health St. Joseph's-Crosslake Clinic

  • Primary Care Clinic/Center
  • Crosslake, MN
  • NPI 1477509776

  Hospital

  Care Compare affiliation
• St. Joseph's Medical Center

  dba Essentia Health St. Joseph's Emily Clinic

  • Multi-Specialty Clinic/Center
  • Emily, MN
  • NPI 1538571914

  Hospital

  Care Compare affiliation
• St. Joseph's Medical Center

  dba Essentia Health-St. Joseph's Medical Center

  • General Acute Care Hospital
  • Brainerd, MN
  • NPI 1568415974
  Care Compare affiliation

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

{
    "created_epoch": "1189641600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1782777600000",
    "number": "1891980777",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1 INDEPENDENCE PT STE 212",
            "city": "GREENVILLE",
            "state": "SC",
            "postal_code": "296154536",
            "telephone_number": "864-797-6174"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "701 GROVE RD FL 5",
            "city": "GREENVILLE",
            "state": "SC",
            "postal_code": "296054210",
            "telephone_number": "864-455-4411"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "612 Mocksville Ave",
            "address_purpose": "LOCATION",
            "city": "Salisbury",
            "state": "NC",
            "postal_code": "281442732",
            "country_code": "US",
            "telephone_number": "704-210-5260",
            "fax_number": "704-210-5265",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "25 June St",
            "address_purpose": "LOCATION",
            "city": "Sanford",
            "state": "ME",
            "postal_code": "040732621",
            "country_code": "US",
            "telephone_number": "207-324-4310",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "227 Mountain Dr",
            "address_purpose": "LOCATION",
            "city": "Dahlonega",
            "state": "GA",
            "postal_code": "305331606",
            "country_code": "US",
            "telephone_number": "770-219-2627",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "22 Bramhall St",
            "address_purpose": "LOCATION",
            "city": "Portland",
            "state": "ME",
            "postal_code": "041023134",
            "country_code": "US",
            "telephone_number": "207-662-4618",
            "fax_number": "207-662-6254",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1 Medical Center Dr",
            "address_purpose": "LOCATION",
            "city": "Biddeford",
            "state": "ME",
            "postal_code": "040059422",
            "country_code": "US",
            "telephone_number": "207-283-7937",
            "fax_number": "207-283-7018",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "CHASTAIN",
        "first_name": "WILLIAM",
        "middle_name": "ELIJAH",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2007-09-13",
        "last_updated": "2026-06-30",
        "certification_date": "2026-06-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "SC",
            "license": "35451",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "NC",
            "license": "2020-02273",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "ME",
            "license": "MD25297",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "GA",
            "license": "65091",
            "primary": false
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "SC",
            "license": "35451",
            "primary": false
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "NC",
            "license": "2020-02273",
            "primary": true
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "ME",
            "license": "MD25297",
            "primary": false
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "MN",
            "license": "60032",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "wchastain39010@nghs.gadirect.net",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "227 Mountain Dr",
            "city": "Dahlonega",
            "state": "GA",
            "country_code": "US",
            "postal_code": "305331606",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Artur Adam Charowski, MD
• Nova Chart, PHARMD
• Stacey Lynn Terpko Chase, PA
• Ryan T Chassereau, CRNA
• Taya Chastain
• Cynthia Chasteen
• Heidi Renee Chasteen
• Caroline Chatain, NP
• Gregoire Paul Chatain, MD
• Raksha Chatakondi

• Hospitalist Physician in Greenville, SC
• Providers in Greenville, SC by specialty
• Hospitalist Physician in South Carolina

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 30, 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.