DR. MICHAEL SIEGEL M.D.
NPI 1699794115
Psychiatry & Neurology - Neurology in San Mateo, CA
About Dr. Michael Siegel M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MICHAEL SIEGEL M.D. (NPI 1699794115) is an individual neurology provider in San Mateo, California, licensed in California (G54866) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Michael Siegel M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Michael Siegel reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
San Mateo, CA 94403
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: County Of San Mateo
- Also billed through NPI 1780753434 (California), NPI 1831268580 (California)
- 597 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 94401 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 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN MATEO, CA 94401
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 Michael Siegel's NPI number?
The NPI number for Michael Siegel is 1699794115. It was assigned to this individual provider in the NPPES registry on July 18, 2006.
Where is Michael Siegel located?
Michael Siegel practices at 101 N El Camino Real Suite 5, San Mateo, CA 94401. The listed phone number is (650) 342-7604.
What is Michael Siegel's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.
Is Michael Siegel enrolled in Medicare?
Yes. Michael Siegel is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Michael Siegel's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Siegel reassigns Medicare benefits to San Mateo County (San Mateo, 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 Michael 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 Michael Siegel was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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. Michael Siegel, M.D. · NPI 1699794115
Neurology physician in San Mateo, California. Individual provider, active in the CMS NPPES registry since July 18, 2006.
## Identity
- **NPI:** 1699794115 (Entity type: Individual)
- **Enumerated:** July 18, 2006
- **Primary specialty:** Psychiatry & Neurology - Neurology · taxonomy 2084N0400X
- **State license:** G54866 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 101 N EL CAMINO REAL, SUITE 5, San Mateo, CA 94401-2700
- **Phone:** (650) 342-7604
## 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:** San Mateo County (NPI 1710908272, San Mateo, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 8, 2007
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Source: [NPI Profile](https://npiprofile.com/npi/1699794115) · Data from the CMS NPPES public registry.