William Patrick Gerlach, OD - Medicare Optometrist in Visalia, CA

William Patrick Gerlach, OD is a medicare enrolled "Optometrist" provider in Visalia, California. His current practice location is 2830 W Main St, Visalia, California. You can reach out to his office (for appointments etc.) via phone at (559) 636-1000.

William Patrick Gerlach is licensed to practice in California (license number OPT 6033 TPA) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1285674291.

Contact Information

William Patrick Gerlach, OD
2830 W Main St,
Visalia, CA 93291-4331
(559) 636-1000
(559) 733-7438

Map and Direction




Healthcare Provider's Profile

Full NameWilliam Patrick Gerlach
GenderMale
SpecialityOptometrist
Location2830 W Main St, Visalia, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1285674291
  • Provider Enumeration Date: 06/07/2006
  • Last Update Date: 10/08/2009
  Medicare PECOS Information:
  • PECOS PAC ID: 8325148778
  • Enrollment ID: I20090831000116

Medical Identifiers

Medical identifiers for William Patrick Gerlach such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1285674291NPI-NPPES
OPT 6033 TPAOtherCAOPTOMETRY LICENSE
ZZZ26499ZOtherCATIED WITH MEDICARE GROUP PTAN

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
152W00000XOptometrist OPT 6033 TPA (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. William Patrick Gerlach allows following entities to bill medicare on his behalf.
Provider NameSierra Eye Medical Group Inc.
Provider TypePart B Supplier - Clinic/group Practice
Provider IdentifiersNPI Number: 1649214388
PECOS PAC ID: 2769467380
Enrollment ID: O20040618001350

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. William Patrick Gerlach 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
William Patrick Gerlach, OD
2830 W Main St,
Visalia, CA 93291-4331

Ph: (559) 636-1000
William Patrick Gerlach, OD
2830 W Main St,
Visalia, CA 93291-4331

Ph: (559) 636-1000

Reviews and Comments


Optometrist in Visalia, CA

Dr. Mark O. Price, O.D.
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Phone: 559-732-0778    Fax: 559-732-5049
Price & Price O.d.s
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Dr. Clifford A Fukushima, O.D.
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Dr. Jessica Nicole Chiles, O.D.
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Phone: 559-733-7700    
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Phone: 209-739-8550    

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.