Active NPI
Karen Chen, M.D.
- Psychiatry Physician
- Costa Mesa, CA
National Provider Identifier
1598023103
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Psychiatry Physician
- License
- A136429
- Practice address
- 2900 Bristol St Ste B201
Costa Mesa, CA 92626-5948 - Phone
- (855) 867-5551
- NPI assigned
- May 2, 2012
- Last updated
- Nov 25, 2025
- 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 |
|---|---|---|---|---|
| Psychiatry Physician | 2084P0800X | A136429 | CA | Primary |
Addresses
Primary practice location
2900 Bristol St Ste B201
Costa Mesa, CA 92626-5948
Mailing address
PO Box 193
Lomita, CA 90717-0193
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in CA
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Psychiatry
- Education
- Georgetown University School of Medicine, 2012
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Telehealth
- Offers telehealth services
- Group practices
Practice addresses (Care Compare)
2900 Bristol St
B203B205
Costa Mesa, CA 92626-5981
Phone (855) 867-5551
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| A136429 | CA | MD | Psychiatry Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| E-Legacy Apc | Psychiatry | Current | Accepting new patients |
Locations
2900 Bristol St
Ste B201
Costa Mesa, CA 92626
Phone (855) 867-5551
Organizations & group practices 2
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.
-
- Internal Medicine Physician
- Lakewood, CA
- NPI 1003949975
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1335916800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1764028800000",
"number": "1598023103",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "PO BOX 193",
"city": "LOMITA",
"state": "CA",
"postal_code": "907170193"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "2900 BRISTOL ST STE B201",
"city": "COSTA MESA",
"state": "CA",
"postal_code": "926265948",
"telephone_number": "855-867-5551"
}
],
"practiceLocations": [],
"basic": {
"last_name": "CHEN",
"first_name": "KAREN",
"credential": "M.D.",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2012-05-02",
"last_updated": "2025-11-25",
"certification_date": "2025-11-25",
"status": "A"
},
"taxonomies": [
{
"code": "2084P0800X",
"taxonomy_group": "",
"desc": "Psychiatry & Neurology, Psychiatry",
"state": "CA",
"license": "A136429",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Costa Mesa, 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.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.