Jennifer Sue Way Siani, M.D.

Primary specialty

Endocrinology, Diabetes & Metabolism PhysicianTaxonomy code 207RE0101X

License

A133595 Issued in CA

Practice address

1250 La Venta Dr
Ste 101a, 207, 211
Westlake Village, CA 91361-3702

Phone

(805) 494-6920

Fax

(805) 494-6922

NPI assigned

Apr 8, 2013

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

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

Specialty

EndocrinologyAlso: Internal Medicine

Education

University of California, Irvine, California College of Medicine, 2013

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

The Regents of the University of CaliforniaGroup PAC ID 1355248584, 1,426 clinicians

Venice Family ClinicGroup PAC ID 2264339126, shared by 17 NPIs, 101 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Ronald Reagan UCLA Medical Center Hospital, Los Angeles, CA, CCN 050262
• Adventist Health Simi Valley Hospital, Simi Valley, CA, CCN 050236

Merit-based Incentive Payment System (MIPS)

Final score

87.51 of 100Reported as group

Quality

79.37

Promoting interoperability

100

Improvement activities

40

Cost

73.65

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: jway149936@direct.uclahealth.org
• Direct secure messaging: jsiani815398@direct.ochin.org

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 Regents of the University of California

  • Internal Medicine Physician
  • Los Angeles, CA
  • NPI 1235107566

  Endocrinology, Diabetes & Metabolism

  Medicare reassignment Care Compare group NPD
• The Regents of the University of California

  • Ambulatory Surgical Clinic/Center
  • Valencia, CA
  • NPI 1689200305
  NPD
• Prime Healthcare Centinela, LLC

  • General Acute Care Hospital
  • Inglewood, CA
  • NPI 1336328244
  NPD (past)
• UCLA Medical Group

  • Internal Medicine Physician
  • Los Angeles, CA
  • NPI 1043427248
  NPD (past)
• West Hills Hospital

  • General Acute Care Hospital
  • West Hills, CA
  • NPI 1023065729
  NPD (past)

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

• Regents Univ of Calif Los Angeles

  • General Acute Care Hospital
  • Los Angeles, CA
  • NPI 1902803315
  Care Compare affiliation
• Simi Valley Hospital and Health Care Services

  • General Acute Care Hospital
  • Simi Valley, CA
  • NPI 1063495190
  Care Compare affiliation

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

{
    "created_epoch": "1365379200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1773964800000",
    "number": "1649613761",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5767 W CENTURY BLVD STE 400",
            "address_2": "SUITE 400",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900455631"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1250 LA VENTA DR",
            "address_2": "STE 101A, 207, 211",
            "city": "WESTLAKE VILLAGE",
            "state": "CA",
            "postal_code": "913613702",
            "telephone_number": "805-494-6920",
            "fax_number": "805-494-6922"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "757 Westwood Plz",
            "address_2": "Suite 7501",
            "address_purpose": "LOCATION",
            "city": "Los Angeles",
            "state": "CA",
            "postal_code": "900957417",
            "country_code": "US",
            "telephone_number": "310-825-7375",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "SIANI",
        "first_name": "JENNIFER",
        "middle_name": "SUE WAY",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2013-04-08",
        "last_updated": "2026-03-20",
        "certification_date": "2026-03-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RE0101X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Endocrinology, Diabetes & Metabolism",
            "state": "CA",
            "license": "A133595",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Craig Shippey
• Marilyn A Shore, PHD
• David Michael Shumway, PT
• Mackenzie Rose Shuster
• Simin A Shymkiw
• Jacob Edward Sidney, MSW, ACSW
• Sierra Therapy Physical Therapy PC
• Siesta House, LLC
• Patricia Sikkeland, PSYD
• Soheil Silani

• Endocrinology, Diabetes & Metabolism Physician in Westlake Village, CA
• Providers in Westlake Village, CA by specialty
• Endocrinology, Diabetes & Metabolism Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 20, 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.