Individual provider Active NPI

Sydney Michelle Middleton, MD

  • Pediatric Endocrinology Physician
  • Charleston, SC
National Provider Identifier
1659833937
Registry record updated Nov 11, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Pediatric Endocrinology PhysicianTaxonomy code 2080P0205X
License
95642 Issued in SC
Practice address
171 Ashley Ave
Charleston, SC 29425-0100
Phone
(843) 792-1414
NPI assigned
Apr 4, 2019
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Nov 11, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Pediatric Endocrinology Physician 2080P0205X 95642 SC Primary

Addresses

Primary practice location

171 Ashley Ave
Charleston, SC 29425-0100

Mailing address

PO Box 751461
Charlotte, NC 28275-1461
Phone (205) 215-2324

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address direct@direct.musc.edu Health Information Exchange (HIE)

Medicare participation

Medicare enrollment files
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

Enrollment IDStateProvider typePAC IDDetails
I20251112000494 SC Practitioner - Pediatric Medicine 1254666787 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Pediatric Medicine
Education
University of Alabama School of Medicine, 2019
Medicare assignment
May accept Medicare assignment

Practice addresses (Care Compare)

1 Poston Rd
Charleston, SC 29407-3428

PO Box
Charlotte, NC 28275-1461

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
95642SCMDPediatric Endocrinology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
University Medical Associates of the Medical University of South Carol Current Accepting new patients
University Medical Associates of the Medical University of South Carol CurrentSince Oct 13, 2025 Accepting new patients

Locations

171 Ashley Ave
Charleston, SC 29425
Phone (843) 792-2123

2250 Mall Dr
North Charleston, SC 29406
Phone (843) 876-0199

Interoperability endpoints

  • Direct secure messaging: smiddleton300850@direct.phhs.org

Organizations & group practices 2

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.

NPI Registry JSON

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

{
    "created_epoch": "1554336000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1762819200000",
    "number": "1659833937",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 751461",
            "city": "CHARLOTTE",
            "state": "NC",
            "postal_code": "282751461",
            "telephone_number": "205-215-2324"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "171 ASHLEY AVE",
            "city": "CHARLESTON",
            "state": "SC",
            "postal_code": "294250100",
            "telephone_number": "843-792-1414"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MIDDLETON",
        "first_name": "SYDNEY",
        "middle_name": "MICHELLE",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2019-04-04",
        "last_updated": "2025-11-11",
        "certification_date": "2025-11-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2080P0205X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Pediatric Endocrinology",
            "state": "SC",
            "license": "95642",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "direct@direct.musc.edu",
            "affiliation": "N",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "address_1": "171 Ashley Ave",
            "city": "Charleston",
            "state": "SC",
            "country_code": "US",
            "postal_code": "294250100",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Charleston, SC

Sources for this page

Verify at the official NPI Registry.