LANCE MITCHELL SIEGEL MD
NPI 1629044185
Ophthalmology in Upland, CA
About Lance Mitchell Siegel Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LANCE MITCHELL SIEGEL MD (NPI 1629044185) is an individual ophthalmology provider in Upland, California, licensed in California (G72351) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS and is a graduate of Virginia Commonwealth University, School Of Medicine (1990).
NPPES Registry Identity
Specialties & Licenses
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
Lance Mitchell Siegel 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 Reassignment
Medicare enrollment records show Lance Siegel reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
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 91786 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
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Lance Siegel's NPI number?
The NPI number for Lance Siegel is 1629044185. It was assigned to this individual provider in the NPPES registry on February 24, 2006.
Where is Lance Siegel located?
Lance Siegel practices at 1246 E Arrow Hwy Ste A, Upland, CA 91786. The listed phone number is (909) 931-9675.
What is Lance Siegel's specialty?
The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.
Is Lance Siegel enrolled in Medicare?
Yes. Lance Siegel 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 Lance Siegel's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Lance Siegel reassigns Medicare benefits to Children's Hospital Los Angeles Medical Group, Inc. (Los Angeles, 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 Lance Siegel'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 Lance Siegel was last updated on February 17, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# Lance Mitchell Siegel, MD · NPI 1629044185
Ophthalmology physician in Upland, California. Individual provider, active in the CMS NPPES registry since February 24, 2006.
## Identity
- **NPI:** 1629044185 (Entity type: Individual)
- **Enumerated:** February 24, 2006
- **Primary specialty:** Ophthalmology · taxonomy 207W00000X
- **State license:** G72351 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1246 E ARROW HWY, STE A, Upland, CA 91786-4955
- **Phone:** (909) 931-9675 · **Fax:** (909) 931-3239
## 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:** Children's Hospital Los Angeles Medical Group, Inc. (NPI 1265530653, Los Angeles, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Virginia Commonwealth University, School Of Medicine, class of 1990
## Record status
- **NPPES last updated:** February 17, 2015
- **Other identifiers:** Medicaid 00G723510 (CA); Medicare UPIN G07982; Medicare ID-Type Unspecified 00G723510 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1629044185) · Data from the CMS NPPES public registry.