KENNETH DAVID ILLINGWORTH M.D.
NPI 1851646566
Orthopaedic Surgery in West Hollywood, CA
About Kenneth David Illingworth M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KENNETH DAVID ILLINGWORTH M.D. (NPI 1851646566) is an individual orthopaedic surgery provider in West Hollywood, California, licensed in California (A147674) and active in the NPI registry since July 2012. He is enrolled in Medicare PECOS, maintains a secondary practice location in Springfield, and is a graduate of University Of Texas Medical School At Houston (2009).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 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
Kenneth David Illingworth 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
3Medicare enrollment records show Kenneth Illingworth reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Los Angeles, CA 90048
- Reassigned Medicare billing, California enrollment
- 2,118 clinicians in this Medicare group
Los Angeles, CA 90048
- Reassigned Medicare billing, California enrollment
- 1,001 clinicians in this Medicare group
Los Angeles, CA 90027
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Childrens Hospital Los Angeles Medical Group Inc
- 1,281 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 90048 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.
WEST HOLLYWOOD, CA 90048
WEST HOLLYWOOD, CA 90048
WEST HOLLYWOOD, CA 90048
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 Kenneth Illingworth's NPI number?
The NPI number for Kenneth Illingworth is 1851646566. It was assigned to this individual provider in the NPPES registry on July 18, 2012.
Where is Kenneth Illingworth located?
Kenneth Illingworth practices at 8700 Beverly Blvd, West Hollywood, CA 90048. The listed phone number is (310) 423-9900.
What is Kenneth Illingworth's specialty?
The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.
Is Kenneth Illingworth enrolled in Medicare?
Yes. Kenneth Illingworth 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 Kenneth Illingworth's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Kenneth Illingworth reassigns Medicare benefits to 3 organizations: Cedars-Sinai Medical Care Foundation (Los Angeles, CA), Cedars-Sinai Medical Center (Los Angeles, CA) and Children's Hospital Los Angeles Medical Group, Inc. (Los Angeles, 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 Kenneth Illingworth'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 Kenneth Illingworth was last updated on May 27, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Kenneth David Illingworth, M.D. · NPI 1851646566
Orthopaedic Surgery physician in West Hollywood, California. Individual provider, active in the CMS NPPES registry since July 18, 2012.
## Identity
- **NPI:** 1851646566 (Entity type: Individual)
- **Enumerated:** July 18, 2012
- **Primary specialty:** Orthopaedic Surgery · taxonomy 207X00000X
- **State license:** A147674 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 8700 BEVERLY BLVD, West Hollywood, CA 90048-1804
- **Phone:** (310) 423-9900
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Cedars-Sinai Medical Care Foundation (NPI 1043826720, Los Angeles, CA); Cedars-Sinai Medical Center (NPI 1639172372, Los Angeles, CA); Children's Hospital Los Angeles Medical Group, Inc. (NPI 1265530653, Los Angeles, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Texas Medical School At Houston, class of 2009
## Record status
- **NPPES last updated:** May 27, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1851646566) · Data from the CMS NPPES public registry.