DEIRDRE D RYAN MD
NPI 1982678025
Orthopaedic Surgery in Los Angeles, CA
About Deirdre D Ryan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DEIRDRE D RYAN MD (NPI 1982678025) is an individual orthopaedic surgery provider in Los Angeles, California, licensed in Illinois (36106998) and active in the NPI registry since February 2006. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 4
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Deirdre D Ryan Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Deirdre Ryan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
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
Las Vegas, NV 89123
- Reassigned Medicare billing, Nevada enrollment
- 2 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 90027 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.
LOS ANGELES, CA 90027
LOS ANGELES, CA 90027
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 Deirdre Ryan's NPI number?
The NPI number for Deirdre Ryan is 1982678025. It was assigned to this individual provider in the NPPES registry on February 15, 2006.
Where is Deirdre Ryan located?
Deirdre Ryan practices at 4650 W Sunset Blvd # 69, Los Angeles, CA 90027. The listed phone number is (323) 361-2450.
What is Deirdre Ryan's specialty?
The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.
Is Deirdre Ryan enrolled in Medicare?
Yes. Deirdre Ryan is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Deirdre Ryan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Deirdre Ryan reassigns Medicare benefits to 2 organizations: Children's Hospital Los Angeles Medical Group, Inc. (Los Angeles, CA) and Children's Bone And Spine Surgery, LLP (Las Vegas, NV). 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 Deirdre Ryan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Deirdre Ryan accept?
Health plans from Blue Cross Blue Shield of Arizona list Deirdre Ryan 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 Deirdre Ryan was last updated on September 8, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Deirdre D Ryan, MD · NPI 1982678025
Orthopaedic Surgery physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since February 15, 2006.
## Identity
- **NPI:** 1982678025 (Entity type: Individual)
- **Enumerated:** February 15, 2006
- **Primary specialty:** Orthopaedic Surgery · taxonomy 207X00000X
- **State license:** 36106998 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 4650 W SUNSET BLVD # 69, Los Angeles, CA 90027-6062
- **Phone:** (323) 361-2450
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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): Children's Hospital Los Angeles Medical Group, Inc. (NPI 1265530653, Los Angeles, CA); Children's Bone And Spine Surgery, LLP (NPI 1689738981, Las Vegas, NV) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 8, 2008
- **Other identifiers:** Medicare UPIN H72404; Medicaid 36106998 (IL); Other K01732 (IL); and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1982678025) · Data from the CMS NPPES public registry.