WILLIAM BLASE M.D.
NPI 1215987086
Ophthalmology in Hemet, CA
About William Blase M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM BLASE M.D. (NPI 1215987086) is an individual ophthalmology provider in Hemet, California, licensed in California (G50680) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Virginia School Of Medicine (1978).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 1
Accepted Insurance
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
William Blase M.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 Reassignments
2Medicare enrollment records show William Blase reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Hemet, CA 92544
- Reassigned Medicare billing, California enrollment
- 22 clinicians in this Medicare group
Temecula, CA 92591
- Reassigned Medicare billing, California enrollment
- 17 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.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92544 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
HEMET, CA 92544
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 Blase's NPI number?
The NPI number for William Blase is 1215987086. It was assigned to this individual provider in the NPPES registry on May 11, 2006.
Where is William Blase located?
William Blase practices at 2390 E Florida Ave #207, Hemet, CA 92544. The listed phone number is (951) 652-6100.
What is William Blase's specialty?
The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.
Is William Blase enrolled in Medicare?
Yes. William Blase 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 organizations bill Medicare for William Blase's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Blase reassigns Medicare benefits to 2 organizations: California Cataract Center & Medical Group Inc (Hemet, CA) and California Eye Professionals Medical Group Inc (Temecula, CA). Each 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 Blase's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Blase accept?
Health plans from Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and Providence Health Plan list William Blase as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for William Blase was last updated on April 8, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# William Blase, M.D. · NPI 1215987086
Ophthalmology physician in Hemet, California. Individual provider, active in the CMS NPPES registry since May 11, 2006.
## Identity
- **NPI:** 1215987086 (Entity type: Individual)
- **Enumerated:** May 11, 2006
- **Primary specialty:** Ophthalmology · taxonomy 207W00000X
- **State license:** G50680 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 2390 E FLORIDA AVE, #207, Hemet, CA 92544-4707
- **Phone:** (951) 652-6100 · **Fax:** (951) 658-7548
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): California Cataract Center & Medical Group Inc (NPI 1508815374, Hemet, CA); California Eye Professionals Medical Group Inc (NPI 1649285008, Temecula, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Virginia School Of Medicine, class of 1978
## Record status
- **NPPES last updated:** April 8, 2013
- **Other identifiers:** Medicare UPIN A51771 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1215987086) · Data from the CMS NPPES public registry.