DR. WILLIAM J HYATT O.D.
NPI 1366463192
Optometrist in San Jose, CA
About Dr. William J Hyatt O.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM J HYATT O.D. (NPI 1366463192) is an individual optometrist in San Jose, California, licensed in California (OPT09532T) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1990).
NPPES Registry Identity
Specialties & Licenses 9
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. William J Hyatt O.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show William Hyatt reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Santa Clara, CA 95051
- Reassigned Medicare billing, California enrollment
- 20,078 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 95123 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is William Hyatt's NPI number?
The NPI number for William Hyatt is 1366463192. It was assigned to this individual provider in the NPPES registry on July 21, 2006.
Where is William Hyatt located?
William Hyatt practices at 590 Blossom Hill Rd, San Jose, CA 95123. The listed phone number is (408) 227-2020.
What is William Hyatt's specialty?
The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.
Is William Hyatt enrolled in Medicare?
Yes. William Hyatt is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for William Hyatt's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Hyatt reassigns Medicare benefits to Permanente Medical Group Inc (Santa Clara, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for William Hyatt's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for William Hyatt was last updated on February 11, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. William J Hyatt, O.D. · NPI 1366463192
Optometrist provider in San Jose, California. Individual provider, active in the CMS NPPES registry since July 21, 2006.
## Identity
- **NPI:** 1366463192 (Entity type: Individual)
- **Enumerated:** July 21, 2006
- **Primary specialty:** Optometrist · taxonomy 152W00000X
- **State license:** OPT09532T (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 590 BLOSSOM HILL RD, San Jose, CA 95123-3212
- **Phone:** (408) 227-2020
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** Permanente Medical Group Inc (NPI 1073606299, Santa Clara, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1990
## Record status
- **NPPES last updated:** February 11, 2022
- **Other identifiers:** Medicaid SD0095321 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1366463192) · Data from the CMS NPPES public registry.