Active NPI
Teresa Xiao, MD
- Internal Medicine Physician
- Nashville, TN
National Provider Identifier
1124775721
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Internal Medicine Physician
- License
- 125.081836
- Practice address
- 1161 21St Ave S
Nashville, TN 37232-0011 - Phone
- (615) 421-4626
- NPI assigned
- Mar 4, 2022
- 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 |
|---|---|---|---|---|
| Internal Medicine Physician | 207R00000X | 125.081836 | IL | Primary |
Addresses
Primary practice location
1161 21St Ave S
Nashville, TN 37232-0011
Mailing address
1161 21St Ave S
T-3113 MCN
Nashville, TN 37232-0011
Phone (615) 421-4626
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in IL
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 1
| Enrollment ID | State | Provider type | PAC ID | Details |
|---|---|---|---|---|
| I20230707001175 | IL | Order and Referring Only - Internal Medicine | 2264891340 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 125.081836 | IL | MD | Internal Medicine Physician |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1646352000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1780876800000",
"number": "1124775721",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1161 21ST AVE S",
"address_2": "T-3113 MCN",
"city": "NASHVILLE",
"state": "TN",
"postal_code": "372320011",
"telephone_number": "615-421-4626"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1161 21ST AVE S",
"city": "NASHVILLE",
"state": "TN",
"postal_code": "372320011",
"telephone_number": "615-421-4626"
}
],
"practiceLocations": [],
"basic": {
"last_name": "XIAO",
"first_name": "TERESA",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2022-03-04",
"last_updated": "2026-06-08",
"certification_date": "2026-06-08",
"status": "A"
},
"taxonomies": [
{
"code": "207R00000X",
"taxonomy_group": "",
"desc": "Internal Medicine",
"state": "IL",
"license": "125.081836",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Nashville, TN
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 8, 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.