Active NPI
Gianna Sliby, RD
- Registered Dietitian
- Williamsburg, VA
National Provider Identifier
1023939147
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Registered Dietitian
- Practice address
- 1311 Jamestown Rd Ste 202
Williamsburg, VA 23185-3391 - Phone
- (757) 401-4024
- NPI assigned
- Jul 23, 2026
- Sex
- Female
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Registered Dietitian | 133V00000X | Primary |
Addresses
Primary practice location
1311 Jamestown Rd Ste 202
Williamsburg, VA 23185-3391
Mailing address
1311 Jamestown Rd Ste 202
Williamsburg, VA 23185-3391
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Not enrolled
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| SM Nutrition, LLC | Past | Accepting new patients |
Organizations & group practices 1
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.
-
- Sports Dietetics Nutrition Registered Dietitian
- Williamsburg, VA
- NPI 1558174482
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1784764800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1784764800000",
"number": "1023939147",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1311 JAMESTOWN RD STE 202",
"city": "WILLIAMSBURG",
"state": "VA",
"postal_code": "231853391"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1311 JAMESTOWN RD STE 202",
"city": "WILLIAMSBURG",
"state": "VA",
"postal_code": "231853391",
"telephone_number": "757-401-4024"
}
],
"practiceLocations": [],
"basic": {
"last_name": "SLIBY",
"first_name": "GIANNA",
"credential": "RD",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2026-07-23",
"last_updated": "2026-07-23",
"certification_date": "2026-07-23",
"status": "A"
},
"taxonomies": [
{
"code": "133V00000X",
"taxonomy_group": "",
"desc": "Dietitian, Registered",
"state": null,
"license": null,
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Williamsburg, VA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 23, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.