NPPES file of Aug 9, 2026

William Patrick Gerlach, O.D.

Optometrist · Visalia, CA

William Patrick Gerlach, O.D. is an optometrist with a practice address in Visalia, California, and NPI 1285674291, issued on Jun 7, 2006. Check the license (California OPT 6033 TPA, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1285674291
Name
William Patrick Gerlach
Credential
O.D.
Primary taxonomy
Optometrist 152W00000X
License number
OPT 6033 TPA CA
Self-reported in NPPES; status is on the state search
Practice location
2830 W Main St, Visalia, CA 93291
Phone
(559) 636-1000
Enumerated
Jun 7, 2006
Record last updated
Oct 8, 2009 (not updated in 17 years: call before relying on the address or phone)
Fax
(559) 733-7438
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest optometrist records → All 8,308 in California → Look up another NPI →

Also registered at 2830 W Main St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Michelle Cantrell, O.D.Optometrist1407060320
  2. Steven Cantrell, M.D.Ophthalmology Physician1861431413
  3. Matthew Kirkman, M.D.Ophthalmology Physician1457545774
  4. Byron Riegel, M.D.Ophthalmology Physician1316993926
  5. David Stark, MD, PHDOphthalmology Physician1528491990
  6. Kenneth Westbrook, M.D.Ophthalmology Physician1407895071

Verify William Patrick Gerlach in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license OPT 6033 TPA    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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William Patrick Gerlach among 8,308 optometrist records in California

William Patrick Gerlach, O.D. is one of 8,308 optometrist records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 6% of them.

  • NPI issued2006 · 6% of these records are older, 66% newer
  • In a Medicare fileNo · 67% of these records are
  • In the CMS Doctors and Clinicians fileNo · 43% of these records are
  • Record last updated2009 · 67% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Optometrist providers in California

There are 8,308 optometrist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 8,308 in California → Every provider in Visalia → Optometrist nationwide →

The 8 optometrist records with the nearest ZIP codes

  1. Michael Baumann, O.D.Visalia, CA 932911417953498
  2. Nikhil Brar, ODVisalia, CA 932911073168688
  3. Michelle Cantrell, O.D.Visalia, CA 932911407060320
  4. Robert Fishback, O.D.Visalia, CA 932911710078944
  5. Clifford Fukushima, O.D.Visalia, CA 932911093929085
  6. Angelica Nava, ODVisalia, CA 932911326717430
  7. Matthew Oblad, O.D.Visalia, CA 932911366472938
  8. Mark Price, O.D.Visalia, CA 932911023182128

Common questions

What is William Patrick Gerlach, O.D.'s NPI number?

William Patrick Gerlach, O.D.'s National Provider Identifier (NPI) is 1285674291, issued on Jun 7, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William Patrick Gerlach, O.D. located?

The NPPES record lists a practice address at 2830 W Main St, Visalia, CA, 93291. Phone: (559) 636-1000. Providers update this record themselves, so call before visiting.

How can I verify William Patrick Gerlach, O.D.'s license?

NPPES lists California license number OPT 6033 TPA, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.