Regina Patricia Cruz Singson, MD

Primary specialty

Anatomic Pathology & Clinical Pathology PhysicianTaxonomy code 207ZP0102X

License

A55921 Issued in CA

Practice address

215 W Janss Rd
Thousand Oaks, CA 91360

Phone

(805) 373-8582

Fax

(805) 373-6865

NPI assigned

Feb 27, 2006

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

Other identifiers 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: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

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.

• Glover Kelty and Schultheis M DS

  • Anatomic Pathology & Clinical Pathology Physician
  • Thousand Oaks, CA
  • NPI 1245263243
  Medicare reassignment
• Thousand Oaks Pathology Associates Inc a Medical Group

  • Clinical Medical Laboratory
  • Thousand Oaks, CA
  • NPI 1912930900
  NPD (past)

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

{
    "created_epoch": "1140998400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1609842863",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2190 LYNN RD",
            "address_2": "STE 220",
            "city": "THOUSAND OAKS",
            "state": "CA",
            "postal_code": "91360",
            "telephone_number": "805-495-8050",
            "fax_number": "805-496-2160"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "215 W JANSS RD",
            "city": "THOUSAND OAKS",
            "state": "CA",
            "postal_code": "91360",
            "telephone_number": "805-373-8582",
            "fax_number": "805-373-6865"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SINGSON",
        "first_name": "REGINA PATRICIA",
        "middle_name": "CRUZ",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-02-27",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207ZP0102X",
            "taxonomy_group": "",
            "desc": "Pathology, Anatomic Pathology & Clinical Pathology",
            "state": "CA",
            "license": "A55921",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "A55921",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Steven Sinclair, PHARM.D.
• Mantej Singh, MD
• Narinderbir Singh
• Singhal Aggarwal, a Professional Corporation
• Maneesh Singhal, M.D.
• Jared Lee Sinn, DPT
• Sirez Medical, Inc.
• Aleen Sisakian, MD
• Robert S. Sitarz, MD
• Vicki Skelton, M.S., L.M.F.T.

• Anatomic Pathology & Clinical Pathology Physician in Thousand Oaks, CA
• Providers in Thousand Oaks, CA by specialty
• Anatomic Pathology & Clinical Pathology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.