Winson Ong, OD - Medicare Optometrist in Brentwood, CA

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Winson Ong, OD is a medicare enrolled "Optometrist" provider in Brentwood, California. He went to University Of California - School Of Optometry and graduated in 2002 and has 24 years of diverse experience with area of expertise as Optometry. He is a member of the group practice Balfour Vision Optix Optometry Inc., Regents Of The University Of California At Berkeley, Winson Ong Od and his current practice location is 3840 Balfour Rd, Suite A, Brentwood, California. You can reach out to his office (for appointments etc.) via phone at (925) 513-0323.

Winson Ong is licensed to practice in California (license number 11938T) 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 1821132143.

Contact Information

Winson Ong, OD
3840 Balfour Rd, Suite A,
Brentwood, CA 94513-1641
(925) 513-0323
Not Available

Map and Direction




Healthcare Provider's Profile

Full NameWinson Ong
GenderMale
SpecialityOptometry
Experience24 Years
Location3840 Balfour Rd, Brentwood, 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:
  • Winson Ong attended and graduated from University Of California - School Of Optometry in 2002
  NPI Data:
  • NPI Number: 1821132143
  • Provider Enumeration Date: 02/19/2007
  • Last Update Date: 07/28/2014
  Medicare PECOS Information:
  • PECOS PAC ID: 0648298943
  • Enrollment ID: I20051104000506

Medical Identifiers

Medical identifiers for Winson Ong such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1821132143NPI-NPPES
SD0119381MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
152W00000XOptometrist 11938T (California)Primary

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. Winson Ong allows following entities to bill medicare on his behalf.
Provider NameBalfour Vision Optix Optometry Inc.
Provider TypePart B Supplier - Clinic/group Practice
Provider IdentifiersNPI Number: 1760670624
PECOS PAC ID: 3375707276
Enrollment ID: O20120605000400
Provider NameWinson Ong Od
Provider TypePart B Supplier - Clinic/group Practice
Provider IdentifiersNPI Number: 1770130932
PECOS PAC ID: 8820421993
Enrollment ID: O20191203001958
Provider NameStephanie Veilleux Od & Winson Ong Od
Provider TypePart B Supplier - Clinic/group Practice
Provider IdentifiersNPI Number: 1699475996
PECOS PAC ID: 6002271632
Enrollment ID: O20230503001868
Provider NameDiamond Valley Optometry
Provider TypePart B Supplier - Clinic/group Practice
Provider IdentifiersNPI Number: 1285473611
PECOS PAC ID: 4587198775
Enrollment ID: O20241111002555

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. Winson Ong 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
Winson Ong, OD
3840 Balfour Rd, Suite A,
Brentwood, CA 94513-1641

Ph: (925) 513-0323		Winson Ong, OD
3840 Balfour Rd, Suite A,
Brentwood, CA 94513-1641

Ph: (925) 513-0323

Reviews and Comments


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Ashley Darnell-sakata, O.D.
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Phone: 925-634-0303    
Ingrid A Stevens-farinas Od Inc
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Practice Location: 2300 Sand Creek Rd Ste G2, Brentwood, CA 94513
Phone: 925-240-8520    Fax: 925-240-8546

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.