DR. WILLIAM DAE BISHOP D.O.
NPI 1821268533
Pathology - Anatomic Pathology & Clinical Pathology in Arcadia, CA
About Dr. William Dae Bishop D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM DAE BISHOP D.O. (NPI 1821268533) is an individual anatomic pathology & clinical pathology provider in Arcadia, California, licensed in California (20A10631) and active in the NPI registry since March 2008. He is enrolled in Medicare PECOS and is a graduate of Other (2007).
NPPES Registry Identity
Specialties & Licenses
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 Dae Bishop D.o. 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 Bishop reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Pasadena, CA 91105
- Reassigned Medicare billing, California enrollment
- 3 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 10
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 91007 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
ARCADIA, CA 91007
ARCADIA, CA 91007
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 Bishop's NPI number?
The NPI number for William Bishop is 1821268533. It was assigned to this individual provider in the NPPES registry on March 10, 2008.
Where is William Bishop located?
William Bishop practices at 300 W Huntington Dr Pathology Dept, Arcadia, CA 91007. The listed phone number is (626) 574-3488.
What is William Bishop's specialty?
The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.
Is William Bishop enrolled in Medicare?
Yes. William Bishop 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 Bishop's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Bishop reassigns Medicare benefits to Pathology Associates Of Arcadia (Pasadena, 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 Bishop'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 Bishop was last updated on July 8, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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 Dae Bishop, D.O. · NPI 1821268533
Anatomic Pathology & Clinical Pathology physician in Arcadia, California. Individual provider, active in the CMS NPPES registry since March 10, 2008.
## Identity
- **NPI:** 1821268533 (Entity type: Individual)
- **Enumerated:** March 10, 2008
- **Primary specialty:** Pathology - Anatomic Pathology & Clinical Pathology · taxonomy 207ZP0102X
- **State license:** 20A10631 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 300 W HUNTINGTON DR, PATHOLOGY DEPT, Arcadia, CA 91007-3402
- **Phone:** (626) 574-3488
## 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:** Pathology Associates Of Arcadia (NPI 1659633493, Pasadena, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2007
## Record status
- **NPPES last updated:** July 8, 2014
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Source: [NPI Profile](https://npiprofile.com/npi/1821268533) · Data from the CMS NPPES public registry.