Dr Jennifer Sue Way Siani, MD - Medicare Endocrinology in Westlake Village, CA

Dr Jennifer Sue Way Siani, MD is a medicare enrolled "Internal Medicine - Endocrinology, Diabetes & Metabolism" physician in Westlake Village, California. She went to University Of California, Irvine, California College Of Medicine and graduated in 2013 and has 13 years of diverse experience with area of expertise as Endocrinology. She is a member of the group practice The Regents Of The University Of California, Venice Family Clinic and her current practice location is 1250 La Venta Dr, Ste 101a, 207, 211, Westlake Village, California. You can reach out to her office (for appointments etc.) via phone at (805) 494-6920.

Dr Jennifer Sue Way Siani is licensed to practice in California (license number A133595) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1649613761.

Contact Information

Dr Jennifer Sue Way Siani, MD
1250 La Venta Dr, Ste 101a, 207, 211,
Westlake Village, CA 91361-3702
(805) 494-6920
(805) 494-6922

Map and Direction




Physician's Profile

Full NameDr Jennifer Sue Way Siani
GenderFemale
SpecialityEndocrinology
Experience13 Years
Location1250 La Venta Dr, Westlake Village, California
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Jennifer Sue Way Siani attended and graduated from University Of California, Irvine, California College Of Medicine in 2013
  NPI Data:
  • NPI Number: 1649613761
  • Provider Enumeration Date: 04/08/2013
  • Last Update Date: 03/20/2026
  Medicare PECOS Information:
  • PECOS PAC ID: 6901152875
  • Enrollment ID: I20180706001497

Medical Identifiers

Medical identifiers for Dr Jennifer Sue Way Siani such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1649613761NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RE0101XInternal Medicine - Endocrinology, Diabetes & Metabolism A133595 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Ronald Reagan Ucla Medical CenterLos angeles, CAHospital
Los Robles Hospital & Medical CenterThousand oaks, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
The Regents Of The University Of California13552485841428
Venice Family Clinic2264339126104

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr Jennifer Sue Way Siani allows following entities to bill medicare on her behalf.
Entity NameThe Regents Of The University Of California
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1235107566
PECOS PAC ID: 1355248584
Enrollment ID: O20031223000439

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Jennifer Sue Way Siani is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr Jennifer Sue Way Siani, MD
5767 W Century Blvd Ste 400, Suite 400,
Los Angeles, CA 90045-5631

Ph: () -
Dr Jennifer Sue Way Siani, MD
1250 La Venta Dr, Ste 101a, 207, 211,
Westlake Village, CA 91361-3702

Ph: (805) 494-6920

Reviews and Comments


Internal Medicine Doctors in Westlake Village, CA

Dr. Miryam Liberman, M.D.
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Robert Yoji Yamane, MD
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Dr. Rodolfo Gutierrez, MD
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Practice Location: 1250 La Venta Dr Ste 202, Westlake Village, CA 91361
Phone: 805-496-5153    
Dr. Hilda Maldonado, M.D.
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Medicare: Not Enrolled in Medicare
Practice Location: 1240 S Westlake Blvd, Suite 133, Westlake Village, CA 91361
Phone: 805-496-6698    
Lauren Elizabeth Eisenbud, MD
Endocrinology, Diabetes & Metabolism
Medicare: Accepting Medicare Assignments
Practice Location: 1250 La Venta Dr Ste 202, Westlake Village, CA 91361
Phone: 805-496-5153    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.