Active NPI
Brittany Keiser, MS, CGC
- Genetic Counselor (M.S.)
- Chicago, IL
National Provider Identifier
1871437863
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Genetic Counselor (M.S.)
- License
- GC001473
- Practice address
- 225 E Chicago Ave
Chicago, IL 60611-2991 - Phone
- (312) 227-4090
- NPI assigned
- Apr 18, 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 |
|---|---|---|---|---|
| Genetic Counselor (M.S.) | 170300000X | GC001473 | CA | Primary |
Addresses
Primary practice location
225 E Chicago Ave
Chicago, IL 60611-2991
Mailing address
225 E Chicago Ave
Chicago, IL 60611-2991
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 |
|---|---|---|---|
| GC001473 | CA | MD | Genetic Counselor (M.S.) |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1776470400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1776470400000",
"number": "1871437863",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "225 E CHICAGO AVE",
"city": "CHICAGO",
"state": "IL",
"postal_code": "606112991"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "225 E CHICAGO AVE",
"city": "CHICAGO",
"state": "IL",
"postal_code": "606112991",
"telephone_number": "312-227-4090"
}
],
"practiceLocations": [],
"basic": {
"last_name": "KEISER",
"first_name": "BRITTANY",
"credential": "MS, CGC",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2026-04-18",
"last_updated": "2026-04-18",
"certification_date": "2026-04-18",
"status": "A"
},
"taxonomies": [
{
"code": "170300000X",
"taxonomy_group": "",
"desc": "Genetic Counselor, MS",
"state": "CA",
"license": "GC001473",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Chicago, IL
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 18, 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.