Active NPI
Katherine Yun-Mei Chung, MS, RDN
- Registered Dietitian
- Naperville, IL
National Provider Identifier
1639754443
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Registered Dietitian
- License
- 164008375
- Practice address
- 728 Sigmund Rd
Naperville, IL 60563-1338 - Phone
- (917) 502-6995
- NPI assigned
- Mar 12, 2021
- Sex
- Female
- Sole proprietor
- Yes
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Nutritionist | 133N00000X | 164008375 | IL | |
| Registered Dietitian | 133V00000X | 164008375 | IL | Primary |
Addresses
Primary practice location
728 Sigmund Rd
Naperville, IL 60563-1338
Mailing address
728 Sigmund Rd
Naperville, IL 60563-1338
Phone (917) 502-6995
Other practice location 1
1030 N Clark St Ste 600
Chicago, IL 60610-5467
Phone (312) 944-1030
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
- Credentials
- Master of Science
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 164008375 | IL | MD | Nutritionist |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Fay Nutrition | Dietitian, Registered | 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.
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1615507200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1752624000000",
"number": "1639754443",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "728 SIGMUND RD",
"city": "NAPERVILLE",
"state": "IL",
"postal_code": "605631338",
"telephone_number": "917-502-6995"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "728 SIGMUND RD",
"city": "NAPERVILLE",
"state": "IL",
"postal_code": "605631338",
"telephone_number": "917-502-6995"
}
],
"practiceLocations": [
{
"address_1": "1030 N Clark St Ste 600",
"address_purpose": "LOCATION",
"city": "Chicago",
"state": "IL",
"postal_code": "606105467",
"country_code": "US",
"telephone_number": "312-944-1030",
"fax_number": "312-648-0155",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "CHUNG",
"first_name": "KATHERINE",
"middle_name": "YUN-MEI",
"credential": "MS, RDN",
"sole_proprietor": "YES",
"sex": "F",
"enumeration_date": "2021-03-12",
"last_updated": "2025-07-16",
"certification_date": "2025-07-16",
"status": "A"
},
"taxonomies": [
{
"code": "133N00000X",
"taxonomy_group": "",
"desc": "Nutritionist",
"state": "IL",
"license": "164008375",
"primary": false
},
{
"code": "133V00000X",
"taxonomy_group": "",
"desc": "Dietitian, Registered",
"state": "IL",
"license": "164008375",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Naperville, IL
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 16, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.