DR. SYDNEY A LEIBEL MD
NPI 1861666919
Allergy & Immunology in San Diego, CA
About Dr. Sydney A Leibel Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SYDNEY A LEIBEL MD (NPI 1861666919) is an individual allergy & immunology provider in San Diego, California, licensed in California (A116427) and active in the NPI registry since April 2008. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Sydney A Leibel Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Sydney Leibel reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
San Diego, CA 92123
- Reassigned Medicare billing, California enrollment
- 562 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.
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.
SAN DIEGO, CA 92123
SAN DIEGO, CA 92123
SAN DIEGO, CA 92123
SAN DIEGO, CA 92123
SAN DIEGO, CA 92123
SAN DIEGO, CA 92123
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 Sydney Leibel's NPI number?
The NPI number for Sydney Leibel is 1861666919. It was assigned to this individual provider in the NPPES registry on April 19, 2008.
Where is Sydney Leibel located?
Sydney Leibel practices at 8110 Birmingham Way, San Diego, CA 92123. The listed phone number is (858) 966-5961.
What is Sydney Leibel's specialty?
The primary specialty registered for this NPI is Allergy & Immunology with taxonomy code 207K00000X.
Is Sydney Leibel enrolled in Medicare?
Yes. Sydney Leibel is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Sydney Leibel's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sydney Leibel reassigns Medicare benefits to Rady Children's Hospital San Diego (San Diego, 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 Sydney Leibel'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 Sydney Leibel was last updated on May 2, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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. Sydney A Leibel, MD · NPI 1861666919
Allergy & Immunology physician in San Diego, California. Individual provider, active in the CMS NPPES registry since April 19, 2008.
## Identity
- **NPI:** 1861666919 (Entity type: Individual)
- **Enumerated:** April 19, 2008
- **Primary specialty:** Allergy & Immunology · taxonomy 207K00000X
- **State license:** A116427 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 8110 BIRMINGHAM WAY, San Diego, CA 92123-2758
- **Phone:** (858) 966-5961
## 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:** Rady Children's Hospital San Diego (NPI 1669617197, San Diego, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 2, 2017
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Source: [NPI Profile](https://npiprofile.com/npi/1861666919) · Data from the CMS NPPES public registry.