Michael Siegel, M.D.
Neurology Physician · San Mateo, CA
Michael Siegel, M.D. is a neurology physician with a practice address in San Mateo, California, and NPI 1699794115, issued on Jul 18, 2006. Check the license (California G54866, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Michael Siegel
- Credential
- M.D.
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- G54866 CA
Self-reported in NPPES; status is on the state search - Practice location
- 101 N EL Camino Real, San Mateo, CA 94401
- Phone
- (650) 342-7604
- Enumerated
- Jul 18, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 2,339 in California → Look up another NPI →
Also registered at 101 N EL Camino Real
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Tracy Tognetti, L.AC.Acupuncturist1184094252
Verify Michael Siegel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G54866Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% fewer Medicare Part D claims than the average neurology physician in 2024
326 Medicare Part D claims for 54 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D.
Most prescribed
- Carbidopa-Levodopa40 claims
- Levetiracetam34 claims
- Quetiapine Fumarate24 claims
- Donepezil Hcl22 claims
- Divalproex Sodium20 claims
- Topiramate20 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Michael Siegel among 2,339 neurology physician records in California
Michael Siegel, M.D. is one of 2,339 neurology physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 70% of these records are
- Record last updated2007 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in California
There are 2,339 neurology physician records in California.
All 2,339 in California → Every provider in San Mateo → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Howard Belfer, MDSan Mateo, CA 944011740206457
- Richard Gravina, MDSan Mateo, CA 944011235217605
- Shawn Barton, MD, PHDStanford, CA 943051649807546
- Marie Beaudin, MD MSCStanford, CA 943051831809904
- Daniela Fishbein, MDStanford, CA 943051902487333
- Pegah Kahaliardabili, MDStanford, CA 943051225666746
- Joanne Lau, MDStanford, CA 943051356960249
- Jung-Hyun Lee, MDStanford, CA 943051972244879
Common questions
What is Michael Siegel, M.D.'s NPI number?
Michael Siegel, M.D.'s National Provider Identifier (NPI) is 1699794115, issued on Jul 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael Siegel, M.D. located?
The NPPES record lists a practice address at 101 N EL Camino Real, San Mateo, CA, 94401. Phone: (650) 342-7604. Providers update this record themselves, so call before visiting.
How can I verify Michael Siegel, M.D.'s license?
NPPES lists California license number G54866, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael Siegel, M.D. prescribe under Medicare Part D?
In 2024, Michael Siegel, M.D. had 326 Medicare Part D claims for 54 beneficiaries; the average among neurology physician prescribers was 1,370. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.