Active NPI
Katarzyna Grzegorczyk, L.AC.
- Acupuncturist
- Los Angeles, CA
National Provider Identifier
1497617898
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Acupuncturist
- License
- 11504
- Practice address
- 11915 W Washington Blvd
Los Angeles, CA 90066-5815 - Phone
- (310) 572-1515
- NPI assigned
- Nov 25, 2025
- 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 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Acupuncturist | 171100000X | 11504 | CA | Primary |
Addresses
Primary practice location
11915 W Washington Blvd
Los Angeles, CA 90066-5815
Mailing address
11131 Rose Ave Apt 15
Los Angeles, CA 90034-6067
Phone (818) 642-6281
Other practice location 1
11131 Rose Ave Apt 15
Los Angeles, CA 90034-6067
Phone (818) 642-6281
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
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1764028800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1764028800000",
"number": "1497617898",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "11131 ROSE AVE APT 15",
"city": "LOS ANGELES",
"state": "CA",
"postal_code": "900346067",
"telephone_number": "818-642-6281"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "11915 W WASHINGTON BLVD",
"city": "LOS ANGELES",
"state": "CA",
"postal_code": "900665815",
"telephone_number": "310-572-1515"
}
],
"practiceLocations": [
{
"address_1": "11131 Rose Ave Apt 15",
"address_purpose": "LOCATION",
"city": "Los Angeles",
"state": "CA",
"postal_code": "900346067",
"country_code": "US",
"telephone_number": "818-642-6281",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "GRZEGORCZYK",
"first_name": "KATARZYNA",
"credential": "L.AC.",
"sole_proprietor": "YES",
"sex": "F",
"enumeration_date": "2025-11-25",
"last_updated": "2025-11-25",
"certification_date": "2025-11-25",
"status": "A"
},
"taxonomies": [
{
"code": "171100000X",
"taxonomy_group": "",
"desc": "Acupuncturist",
"state": "CA",
"license": "11504",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Los Angeles, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 25, 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.