H R Christopher O'Brien, PHARM.D, BCPP, APH

Primary specialty

Psychiatric PharmacistTaxonomy code 1835P1300X

License

10158 Issued in CA

Practice address

1127 Wilshire Blvd Ste 1415
Los Angeles, CA 90017-4005

Phone

(213) 924-8889

Fax

(213) 924-8889

NPI assigned

Mar 29, 2007

Sex

Male

Sole proprietor

Yes

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 3

Addresses

Other names 1

• Dr. Chris O'Brien Professional name

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

Credentials

Doctor of Pharmacy

State licenses

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Homecare 360 LLC

  • Home Health Agency
  • Los Angeles, CA
  • NPI 1285106641
  NPD Authorized official

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1175126400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1765497600000",
    "number": "1598885162",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "10413 OLD RIVER SCHOOL RD",
            "city": "DOWNEY",
            "state": "CA",
            "postal_code": "902412015",
            "telephone_number": "213-924-8889",
            "fax_number": "213-927-3654"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1127 WILSHIRE BLVD STE 1415",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900174005",
            "telephone_number": "213-924-8889",
            "fax_number": "213-924-8889"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "O'BRIEN",
        "first_name": "H R",
        "middle_name": "CHRISTOPHER",
        "name_prefix": "Dr.",
        "credential": "PHARM.D, BCPP, APH",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2007-03-29",
        "last_updated": "2025-12-12",
        "certification_date": "2025-12-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "183500000X",
            "taxonomy_group": "",
            "desc": "Pharmacist",
            "state": "CA",
            "license": "49570",
            "primary": false
        },
        {
            "code": "1835P1300X",
            "taxonomy_group": "",
            "desc": "Pharmacist, Psychiatric",
            "state": "CA",
            "license": "10158",
            "primary": true
        },
        {
            "code": "208U00000X",
            "taxonomy_group": "",
            "desc": "Clinical Pharmacology",
            "state": "CA",
            "license": "49570",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "CHRIS",
            "last_name": "O'BRIEN",
            "prefix": "DR.",
            "credential": "PHARM.D. BCPP, APH",
            "code": "2",
            "type": "Professional Name"
        }
    ]
}

• Anne Minh O, ASW
• Tiffany O'Bannon
• Carolyn O'Brien Price
• Brigid Ellen O'Brien, D.O.
• Erin O'Brien, LMFT
• Jeremy Cole O'Brien, LCSW, MSW
• Jill O'Brien, MS, ATC
• Kissten O'Brien
• Lauren Irene O'Brien, M.D.
• Mary P O'Brien, PHD

• Psychiatric Pharmacist in Los Angeles, CA
• Providers in Los Angeles, CA by specialty
• Psychiatric Pharmacist in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Dec 12, 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.

Verify at the official NPI Registry.