WILLIAM BECK LEWIS MD
NPI 1124081112
Otolaryngology in Oakland, CA
About William Beck Lewis Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM BECK LEWIS MD (NPI 1124081112) is an individual otolaryngology provider in Oakland, California, licensed in California (G86559) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in Stanford, and is a graduate of State University Of Ny Upstate Medical University (1993).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 3
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 Beck Lewis Md 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 Lewis reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Emeryville, CA 94608
- Reassigned Medicare billing, California enrollment
- 4,258 clinicians in this Medicare group
Newark, CA 94560
- Reassigned Medicare billing, California enrollment
- 435 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 7
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 94609 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
OAKLAND, CA 94609
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 Lewis's NPI number?
The NPI number for William Lewis is 1124081112. It was assigned to this individual provider in the NPPES registry on April 10, 2006.
Where is William Lewis located?
William Lewis practices at 2961 Summit St Suite 1, Oakland, CA 94609. The listed phone number is (510) 465-0941.
What is William Lewis's specialty?
The primary specialty registered for this NPI is Otolaryngology with taxonomy code 207Y00000X.
Is William Lewis enrolled in Medicare?
Yes. William Lewis 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 Lewis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Lewis reassigns Medicare benefits to 2 organizations: Stanford Health Care (Emeryville, CA) and University Healthcare Alliance (Newark, 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 Lewis'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 Lewis was last updated on April 29, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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 Beck Lewis, MD · NPI 1124081112
Otolaryngology physician in Oakland, California. Individual provider, active in the CMS NPPES registry since April 10, 2006.
## Identity
- **NPI:** 1124081112 (Entity type: Individual)
- **Enumerated:** April 10, 2006
- **Primary specialty:** Otolaryngology · taxonomy 207Y00000X
- **State license:** G86559 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 2961 SUMMIT ST, SUITE 1, Oakland, CA 94609-3482
- **Phone:** (510) 465-0941 · **Fax:** (510) 465-0941
## 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): Stanford Health Care (NPI 1275076325, Emeryville, CA); University Healthcare Alliance (NPI 1760531198, Newark, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** State University Of Ny Upstate Medical University, class of 1993
## Record status
- **NPPES last updated:** April 29, 2024
- **Other identifiers:** Medicaid 00G865590 (CA); Other G86559 (CA); Other 032983 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1124081112) · Data from the CMS NPPES public registry.