Lakshan Nicholas Fonseka, DO

Primary specialty

Psychiatry PhysicianTaxonomy code 2084P0800X

License

20A25632 Issued in CA

Practice address

675 18TH St # PB-5250
San Francisco, CA 94143-4200

Phone

(415) 476-7000

NPI assigned

Apr 5, 2022

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in MA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

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.

• The Commonwealth of Massachusetts

  dba Corrigan Mental Health Center

  • Psychiatric Hospital
  • Fall River, MA
  • NPI 1194803288
  Medicare reassignment NPD
• The Commonwealth of Massachusetts

  dba Cape Cod and Islands Community Mental Health Center-IPD

  • Psychiatric Hospital
  • Pocasset, MA
  • NPI 1851477491
  Medicare reassignment NPD
• The Commonwealth of Massachusetts

  dba Soldiers' Home in Holyoke

  • General Acute Care Hospital
  • Holyoke, MA
  • NPI 1427111574
  NPD

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

{
    "created_epoch": "1649116800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1782432000000",
    "number": "1669113353",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "28333 BRYCE DR",
            "city": "CASTAIC",
            "state": "CA",
            "postal_code": "913843781",
            "telephone_number": "661-319-6743"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "675 18TH ST # PB-5250",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941434200",
            "telephone_number": "415-476-7000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "940 Belmont St",
            "address_purpose": "LOCATION",
            "city": "Brockton",
            "state": "MA",
            "postal_code": "023015568",
            "country_code": "US",
            "telephone_number": "508-583-4500",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "FONSEKA",
        "first_name": "LAKSHAN",
        "middle_name": "NICHOLAS",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2022-04-05",
        "last_updated": "2026-06-26",
        "certification_date": "2026-06-26",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "CA",
            "license": "20A25632",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Vincent Wing Ching Fong, LMFT
• Willy Tuen Fong, PHARM.D.
• Alexandra Irene Fonseca, DC
• Aura Michelle Fonseca, ASW
• Maria Lorraine Fonseca
• Meghan Cassidy Fontaine, RN
• Melinda Fontaine, DPT
• Michael Anthony Fontana, DC
• Fraser Allen Fontane
• Rina Fontanilla

• Psychiatry Physician in San Francisco, CA
• Providers in San Francisco, CA by specialty
• Psychiatry Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 26, 2026; 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.