NPIMap

Individual provider Active NPI

Cassandra Leigh Thomas, M.D.

  • Hematology & Oncology Physician
  • Ventura, CA
National Provider Identifier
1376787416
Registry record updated Nov 17, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Hematology & Oncology PhysicianTaxonomy code 207RH0003X
License
C184675 Issued in CA
Practice address
300 Hillmont Ave Ste 501
Ventura, CA 93003-1651
Phone
(805) 652-6218
NPI assigned
Apr 20, 2009
Last updated
Nov 17, 2025By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Nov 17, 2025

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

Specialties & licenses 4

Specialty (taxonomy)CodeLicenseStatePrimary
Student in an Organized Health Care Education/Training Program 390200000X
Internal Medicine Physician 207R00000X MD446164 PA
Hematology & Oncology Physician 207RH0003X C184675 CA Primary
Medical Oncology Physician 207RX0202X 25MA10384800 NJ

Addresses

Primary practice location

300 Hillmont Ave Ste 501
Ventura, CA 93003-1651

Mailing address

300 Hillmont Ave Ste 501
Ventura, CA 93003-1651
Phone (805) 652-6218

Other practice location 1

925 Chestnut St Ste 320A
Philadelphia, PA 19107-4216
Phone (215) 955-8874

Other practice location 2

900 Medical Center Dr Ste 200
Sewell, NJ 08080-2358
Phone (856) 557-7900

Other identifiers 2

IdentifierTypeStateIssuer
0311057MedicaidNJ
102756150MedicaidPA

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address cassandra.thomas@ventura.cernerdirect.com Direct

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20240408000130 CA Practitioner - Internal Medicine 2466608542 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
Other, 2009
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Community Memorial Health SystemGroup PAC ID 9537155676, 187 clinicians
County of VenturaGroup PAC ID 7911810171, 340 clinicians

Practice addresses (Care Compare)

2900 Loma Vista Rd
Suite 205
Ventura, CA 93003-2909
Phone (805) 642-4830

300 Hillmont Ave
Ventura, CA 93003-1651

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
86.02 of 100Reported as group
Quality
64.51
Promoting interoperability
100
Improvement activities
40
Cost
72.21

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
C184675CAMDHematology & Oncology Physician
25MA10384800NJMDMedical Oncology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Community Memorial Health System Current Accepting new patients
Community Memorial Health System CurrentSince Oct 1, 2025 Accepting new patients
County of Ventura CurrentSince May 16, 2024 Accepting new patients
County of Ventura CurrentSince Nov 8, 2025 Accepting new patients
Community Memorial Health System CurrentSince Oct 1, 2025 Accepting new patients
County of Ventura CurrentSince May 16, 2024 Accepting new patients
Thomas Jefferson University Hospitals Inc Past Accepting new patients
Community Medical Center, Inc. PastSince Nov 8, 2025 Accepting new patients
Kennedy Medical Group Practice, P.C. Internal Medicine PastSince Jun 15, 2021 Accepting new patients

Locations

422 Arneill Rd
Ste B
Camarillo, CA 93010
Phone (805) 383-4510

2921 Saviers Rd
Oxnard, CA 93033
Phone (805) 487-5588

138 W Main St
Ste E
Ventura, CA 93001
Phone (805) 667-2850

147 N Brent St
Ventura, CA 93003
Phone (805) 652-5011

2900 Loma Vista Rd
Ste 205
Ventura, CA 93003
Phone (805) 570-7799

300 Hillmont Ave
Ventura, CA 93003
Phone (805) 652-6000

300 Hillmont Ave
Bldg 340
Ventura, CA 93003
Phone (805) 652-6100

300 Hillmont Ave
Ste 501
Ventura, CA 93003
Phone (805) 652-6218

5855 Olivas Park Dr
Ventura, CA 93003
Phone (805) 652-5469

800 S Victoria Ave
#L4640
Ventura, CA 93009

Interoperability endpoints

  • Direct secure messaging: cassandra.thomas@dclp.ikm.direct-ci.com
  • Direct secure messaging: cassandra.thomas@ventura.cernerdirect.com
  • Direct secure messaging: cthomas4081092@oc.providencedirect.org

Organizations & group practices 9

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.

Hospital & facility affiliations 11

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

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

{
    "created_epoch": "1240185600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1763337600000",
    "number": "1376787416",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "300 HILLMONT AVE STE 501",
            "city": "VENTURA",
            "state": "CA",
            "postal_code": "930031651",
            "telephone_number": "805-652-6218"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "300 HILLMONT AVE STE 501",
            "city": "VENTURA",
            "state": "CA",
            "postal_code": "930031651",
            "telephone_number": "805-652-6218"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "925 Chestnut St Ste 320A",
            "address_purpose": "LOCATION",
            "city": "Philadelphia",
            "state": "PA",
            "postal_code": "191074216",
            "country_code": "US",
            "telephone_number": "215-955-8874",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "900 Medical Center Dr Ste 200",
            "address_purpose": "LOCATION",
            "city": "Sewell",
            "state": "NJ",
            "postal_code": "080802358",
            "country_code": "US",
            "telephone_number": "856-557-7900",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "THOMAS",
        "first_name": "CASSANDRA",
        "middle_name": "LEIGH",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2009-04-20",
        "last_updated": "2025-11-17",
        "certification_date": "2025-11-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "PA",
            "license": "MD446164",
            "primary": false
        },
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "CA",
            "license": "C184675",
            "primary": true
        },
        {
            "code": "207RX0202X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Medical Oncology",
            "state": "NJ",
            "license": "25MA10384800",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "0311057",
            "state": "NJ"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "102756150",
            "state": "PA"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "cassandra.thomas@ventura.cernerdirect.com",
            "affiliation": "N",
            "endpointDescription": "Cerner Direct Secure Email",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "Direct Information",
            "address_1": "300 Hillmont Ave Ste 501",
            "city": "Ventura",
            "state": "CA",
            "country_code": "US",
            "postal_code": "930031651",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Ventura, CA

Sources for this page

Verify at the official NPI Registry.