Dena Thamsopit, O.D.

Primary specialty

OptometristTaxonomy code 152W00000X

License

13806 Issued in CA

Practice address

4355 Phelan Rd
Phelan, CA 92371-7675

Phone

(760) 868-2020

Fax

(760) 868-7675

NPI assigned

Jul 16, 2009

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Electronic endpoints 1

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: No
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Optometry

Education

Ohio State University - College of Optometry, 2009

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Southern California Permanente Medical GroupGroup PAC ID 6002729175, 11,250 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

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.

• Southern California Permanente Medical Group

  • Health Maintenance Organization
  • Riverside, CA
  • NPI 1316979834

  CA

  Medicare reassignment Care Compare group NPD
• Bryan D. Vanesian OD a Professional Optometry Corporation

  • Optometrist
  • Phelan, CA
  • NPI 1437312832

  CA

  Medicare reassignment
• Southern California Permanente Medical Group

  • Health Maintenance Organization
  • Baldwin Park, CA
  • NPI 1770515280
  Care Compare group
• Southern California Permanente Medical Group

  • Clinical Medical Laboratory
  • N Hollywood, CA
  • NPI 1891873303
  Care Compare group
• Southern California Permanente Medical Group

  • Health Maintenance Organization
  • Woodland Hills, CA
  • NPI 1952333478
  Care Compare group
• Southern California Permanente Medical Group

  • Health Maintenance Organization
  • Santa Clarita, CA
  • NPI 1316409410
  NPD
• Southern California Permanente Medical Group

  • Health Maintenance Organization
  • Fontana, CA
  • NPI 1316463763
  NPD

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

{
    "created_epoch": "1247702400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1785974400000",
    "number": "1740410307",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "20670 FUERO DR",
            "city": "WALNUT",
            "state": "CA",
            "postal_code": "917892408",
            "telephone_number": "909-348-3572",
            "fax_number": "909-594-2071"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4355 PHELAN RD",
            "city": "PHELAN",
            "state": "CA",
            "postal_code": "923717675",
            "telephone_number": "760-868-2020",
            "fax_number": "760-868-7675"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "THAMSOPIT",
        "first_name": "DENA",
        "name_prefix": "Dr.",
        "credential": "O.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2009-07-16",
        "last_updated": "2026-08-06",
        "certification_date": "2026-08-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "152W00000X",
            "taxonomy_group": "",
            "desc": "Optometrist",
            "state": "CA",
            "license": "13806",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "SOAP",
            "endpointTypeDescription": "SOAP URL",
            "endpoint": "https://careepicwest.kp.org:14430/Interconnect-prodcalgateway/wcf/epic.community.hie/xcpdrespondinggatewaysync.svc/scalceq",
            "affiliation": "N",
            "endpointDescription": "Carequality",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "C-CDA",
            "address_1": "4355 Phelan Rd",
            "city": "Phelan",
            "state": "CA",
            "country_code": "US",
            "postal_code": "923717675",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

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• Erin Tetley
• The Living Room - Senior Services
• Thrifty Payless Inc
• Betty Jo Tronaas, NP
• Unicare Community Health Center, Inc.
• Valencure LLC

• All providers in Phelan, CA
• Optometrist in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 6, 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.
• 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.

Verify at the official NPI Registry.