Marshall Whitson Walker Jr., M.D.

Primary specialty

Neonatal-Perinatal Medicine PhysicianTaxonomy code 2080N0001X

License

017162 Issued in SC

Practice address

701 Grove Rd
Dept. of Neonatology, Greenville Hospital System
Greenville, SC 29605-5611

Phone

(864) 455-7939

Fax

(864) 455-3685

NPI assigned

Apr 7, 2006

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 4

Medicare fee-for-service enrollment

Enrolled in SC

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

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

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.

• Prisma Health-Upstate

  • General Acute Care Hospital
  • Greenville, SC
  • NPI 1649726738
  NPD (past)

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

{
    "created_epoch": "1144368000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1781222400000",
    "number": "1427011980",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "12 HOLLINGSWORTH DR",
            "city": "GREENVILLE",
            "state": "SC",
            "postal_code": "296073923",
            "telephone_number": "864-414-0426"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "701 GROVE RD",
            "address_2": "DEPT. OF NEONATOLOGY, GREENVILLE HOSPITAL SYSTEM",
            "city": "GREENVILLE",
            "state": "SC",
            "postal_code": "296055611",
            "telephone_number": "864-455-7939",
            "fax_number": "864-455-3685"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WALKER",
        "first_name": "MARSHALL",
        "middle_name": "WHITSON",
        "name_prefix": "Dr.",
        "name_suffix": "Jr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-04-07",
        "last_updated": "2026-06-12",
        "certification_date": "2026-06-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2080N0001X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Neonatal-Perinatal Medicine",
            "state": "SC",
            "license": "017162",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "171628",
            "state": "SC"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "7906185",
            "state": "NC"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00777246B",
            "state": "GA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00777246C",
            "state": "GA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Frances Allison Walker, BIRTH DOULA
• Jennifer Walker, MD
• Joseph Brock Walker
• Kathryn Heasley Walker, APRN
• Kevin Burton Walker, M.D.
• Rachel Walker, M.S.
• Robert Davis Walker, M.D.
• Robert Ricardo Walker, M.D.
• Samantha Walker, HEALTH EDUCATOR
• Vanessa Walker, MMFT, LPC-MHSP

• Neonatal-Perinatal Medicine Physician in Greenville, SC
• Providers in Greenville, SC by specialty
• Neonatal-Perinatal Medicine Physician in South Carolina

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 12, 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.