Active NPI
Patrick Ma Chen
- Pharmacist
- Berkeley, CA
National Provider Identifier
1821890310
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Pharmacist
- License
- 90739
- Practice address
- 1444 Shattuck Ave
Berkeley, CA 94709-1411 - Phone
- (510) 542-5242
- NPI assigned
- Mar 25, 2025
- Last updated
- Sep 6, 2025
- Sex
- Male
- 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 |
|---|---|---|---|---|
| Pharmacist | 183500000X | 90739 | CA | Primary |
Addresses
Primary practice location
1444 Shattuck Ave
Berkeley, CA 94709-1411
Mailing address
2132 16TH Ave
San Francisco, CA 94116-1845
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
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 90739 | CA | MD | Pharmacist |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Safeway Inc | Past | Accepting new patients | |
| Safeway Inc | Past | Accepting new patients |
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.
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1742860800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1757116800000",
"number": "1821890310",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "2132 16TH AVE",
"city": "SAN FRANCISCO",
"state": "CA",
"postal_code": "941161845"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1444 SHATTUCK AVE",
"city": "BERKELEY",
"state": "CA",
"postal_code": "947091411",
"telephone_number": "510-542-5242"
}
],
"practiceLocations": [],
"basic": {
"last_name": "CHEN",
"first_name": "PATRICK",
"middle_name": "MA",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2025-03-25",
"last_updated": "2025-09-06",
"certification_date": "2025-09-06",
"status": "A"
},
"taxonomies": [
{
"code": "183500000X",
"taxonomy_group": "",
"desc": "Pharmacist",
"state": "CA",
"license": "90739",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Berkeley, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 6, 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.