Gerard Joseph Bernal Sim, OD - Optometrist in Grand Terrace, CA

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Gerard Joseph Bernal Sim, OD is a Optometrist based in Grand Terrace, California. Gerard Joseph Bernal Sim is licensed to practice in California (license number OPT36072-TLG) and his current practice location is 11980 Mount Vernon Ave, Grand Terrace, California. He can be reached at his office (for appointments etc.) via phone at (951) 654-0803.

NPI number for Gerard Joseph Bernal Sim is 1669363883 and his current mailing address is 786 Newbury Way, Diamond Bar, California. He does not participate in medicare program and thus does not accept medicare assignments. His NPI Number is 1669363883.

Contact Information

Gerard Joseph Bernal Sim, OD
11980 Mount Vernon Ave,
Grand Terrace, CA 92313-5172
(951) 654-0803
Not Available

Map and Direction




Healthcare Provider's Profile

Full NameGerard Joseph Bernal Sim
GenderMale
SpecialityOptometrist
Location11980 Mount Vernon Ave, Grand Terrace, California
Accepts Medicare AssignmentsDoes not participate in Medicare Program. He may not accept medicare assignment.
  NPI Data:
  • NPI Number: 1669363883
  • Provider Enumeration Date: 07/15/2025
  • Last Update Date: 07/22/2025

Medical Identifiers

Medical identifiers for Gerard Joseph Bernal Sim such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1669363883NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
152W00000XOptometrist OPT36072-TLG (California)Primary

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. Gerard Joseph Bernal Sim is NOT enrolled with medicare and thus cannot prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Gerard Joseph Bernal Sim, OD
786 Newbury Way,
Diamond Bar, CA 91765-4625

Ph: Not Available		Gerard Joseph Bernal Sim, OD
11980 Mount Vernon Ave,
Grand Terrace, CA 92313-5172

Ph: (951) 654-0803

Reviews and Comments


Optometrist in Grand Terrace, CA

Vy Vy Lu, OD
Optometrist
Medicare: Not Enrolled in Medicare
Practice Location: 11980 Mount Vernon Ave, Grand Terrace, CA 92313
Phone: 909-864-1097    
Dr. Cameron Micah Yu, OD
Optometrist
Medicare: Accepting Medicare Assignments
Practice Location: 11980 Mount Vernon Ave, Grand Terrace, CA 92313
Phone: 909-864-1097    

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.