Dr Clifford James Leong, OD - Medicare Optometrist in Fremont, CA

Dr Clifford James Leong, OD is a medicare enrolled "Optometrist" provider in Fremont, California. He went to State University Of New York - State College Optometry and graduated in 2007 and has 17 years of diverse experience with area of expertise as Optometry. He is a member of the group practice Fremont Optometric Group and his current practice location is 39355 California St, Suite 103, Fremont, California. You can reach out to his office (for appointments etc.) via phone at (510) 744-2010.

Dr Clifford James Leong is licensed to practice in California (license number 13702) 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 1851585624.

Contact Information

Dr Clifford James Leong, OD
39355 California St, Suite 103,
Fremont, CA 94538-1447
(510) 744-2010
(510) 744-2015

Map and Direction




Healthcare Provider's Profile

Full NameDr Clifford James Leong
GenderMale
SpecialityOptometry
Experience17 Years
Location39355 California St, 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:
  • Dr Clifford James Leong attended and graduated from State University Of New York - State College Optometry in 2007
  NPI Data:
  • NPI Number: 1851585624
  • Provider Enumeration Date: 09/04/2007
  • Last Update Date: 09/16/2011
  Medicare PECOS Information:
  • PECOS PAC ID: 4183789282
  • Enrollment ID: I20111024000547

Medical Identifiers

Medical identifiers for Dr Clifford James Leong such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1851585624NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
152W00000XOptometrist TUV0071931 (New York)Secondary
152W00000XOptometrist 13702 (California)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Fremont Optometric Group96381183425

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 Clifford James Leong allows following entities to bill medicare on his behalf.
Provider NameFremont Optometric Group
Provider TypePart B Supplier - Clinic/group Practice
Provider IdentifiersNPI Number: 1619991080
PECOS PAC ID: 9638118342
Enrollment ID: O20050502000533

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 Clifford James Leong 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 Clifford James Leong, OD
39355 California St, Suite 103,
Fremont, CA 94538-1447

Ph: (510) 744-2010
Dr Clifford James Leong, OD
39355 California St, Suite 103,
Fremont, CA 94538-1447

Ph: (510) 744-2010

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.