Simin Siddiq, MD - Medicare Internal Medicine in Fremont, CA

Simin Siddiq, MD is a medicare enrolled "Internal Medicine" physician in Fremont, California. She graduated from medical school in 1977 and has 47 years of diverse experience with area of expertise as Internal Medicine. She is a member of the group practice California Cardiovascular Consultants and her current practice location is 2333 Mowry Ave, Suite 300, Fremont, California. You can reach out to her office (for appointments etc.) via phone at (510) 796-0222.

Simin Siddiq is licensed to practice in California (license number A38666) 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 1255362422.

Contact Information

Simin Siddiq, MD
2333 Mowry Ave, Suite 300,
Fremont, CA 94538
(510) 796-0222
(510) 796-7760

Map and Direction




Physician's Profile

Full NameSimin Siddiq
GenderFemale
SpecialityInternal Medicine
Experience47 Years
Location2333 Mowry Ave, Fremont, 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:
  • Simin Siddiq graduated from medical school in 1977
  NPI Data:
  • NPI Number: 1255362422
  • Provider Enumeration Date: 07/06/2006
  • Last Update Date: 04/15/2010
  Medicare PECOS Information:
  • PECOS PAC ID: 1658282454
  • Enrollment ID: I20050428000533

Medical Identifiers

Medical identifiers for Simin Siddiq such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1255362422NPI-NPPES
00A38666MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine A38666 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Washington HospitalFremont, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
California Cardiovascular Consultants781080008323

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. Simin Siddiq allows following entities to bill medicare on her behalf.
Entity NameCalifornia Cardiovascular Consultants
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1932202959
PECOS PAC ID: 7810800083
Enrollment ID: O20040205000591

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. Simin Siddiq 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
Simin Siddiq, MD
2333 Mowry Ave, Suite 300,
Fremont, CA 94538

Ph: (510) 796-0222
Simin Siddiq, MD
2333 Mowry Ave, Suite 300,
Fremont, CA 94538

Ph: (510) 796-0222

Reviews and Comments


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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.