Active NPI
Lexi Kremer-Callahan, MD
- Family Medicine Physician
- Troy, IL
National Provider Identifier
1124722061
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Family Medicine Physician
- License
- 036177170
- Practice address
- 7342 State Route 162
Troy, IL 62294-3162 - Phone
- (618) 343-3722
- NPI assigned
- Mar 27, 2023
- 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 |
|---|---|---|---|---|
| Family Medicine Physician | 207Q00000X | 036177170 | IL | Primary |
Addresses
Primary practice location
7342 State Route 162
Troy, IL 62294-3162
Mailing address
7342 State Route 162
Troy, IL 62294-3162
Phone (618) 343-3722
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in MO
- 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 |
|---|---|---|---|---|
| I20230707002030 | MO | Order and Referring Only - Family Practice | 7517326622 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1679875200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1786579200000",
"number": "1124722061",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "7342 STATE ROUTE 162",
"city": "TROY",
"state": "IL",
"postal_code": "622943162",
"telephone_number": "618-343-3722"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "7342 STATE ROUTE 162",
"city": "TROY",
"state": "IL",
"postal_code": "622943162",
"telephone_number": "618-343-3722"
}
],
"practiceLocations": [],
"basic": {
"last_name": "KREMER-CALLAHAN",
"first_name": "LEXI",
"name_prefix": "Ms.",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2023-03-27",
"last_updated": "2026-08-13",
"certification_date": "2026-08-13",
"status": "A"
},
"taxonomies": [
{
"code": "207Q00000X",
"taxonomy_group": "",
"desc": "Family Medicine",
"state": "IL",
"license": "036177170",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Troy, IL
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 13, 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.