Gurcharan Singh Reen, MD - Medicare Cardiovascular Disease (cardiology) in Fremont, CA

Gurcharan Singh Reen, MD is a medicare enrolled "Internal Medicine - Cardiovascular Disease" physician in Fremont, California. He graduated from medical school in 1968 and has 56 years of diverse experience with area of expertise as Cardiovascular Disease (cardiology). He is a member of the group practice Washington Township Hospital District and his current practice location is 1900 Mowry Ave Ste 101, Fremont, California. You can reach out to his office (for appointments etc.) via phone at (510) 790-9047.

Gurcharan Singh Reen is licensed to practice in California (license number A41841) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1356499578.

Contact Information

Gurcharan Singh Reen, MD
1900 Mowry Ave Ste 101,
Fremont, CA 94538-1722
(510) 790-9047
(510) 790-9456

Map and Direction




Physician's Profile

Full NameGurcharan Singh Reen
GenderMale
SpecialityCardiovascular Disease (cardiology)
Experience56 Years
Location1900 Mowry Ave Ste 101, Fremont, California
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Gurcharan Singh Reen graduated from medical school in 1968
  NPI Data:
  • NPI Number: 1356499578
  • Provider Enumeration Date: 01/05/2007
  • Last Update Date: 07/09/2007
  Medicare PECOS Information:
  • PECOS PAC ID: 1951454966
  • Enrollment ID: I20090807000423

Medical Identifiers

Medical identifiers for Gurcharan Singh Reen such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1356499578NPI-NPPES
00A418410OtherCAPROVIDER#
2597117MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RC0000XInternal Medicine - Cardiovascular Disease A41841 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Washington HospitalFremont, CAHospital

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. Gurcharan Singh Reen allows following entities to bill medicare on his behalf.
Entity NameWashington Township Hospital District
Entity TypePart B Supplier - Hospital Department(s)
Entity IdentifiersNPI Number: 1154472058
PECOS PAC ID: 2860488822
Enrollment ID: O20081210000515

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. Gurcharan Singh Reen 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
Gurcharan Singh Reen, MD
1900 Mowry Ave Ste 101,
Fremont, CA 94538-1722

Ph: (510) 790-9047
Gurcharan Singh Reen, MD
1900 Mowry Ave Ste 101,
Fremont, CA 94538-1722

Ph: (510) 790-9047

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.