Olivia Marais, MD
Epilepsy Physician · Palo Alto, CA
Olivia Marais, MD is an epilepsy physician with a practice address in Palo Alto, California, and NPI 1578309597, issued on Jul 9, 2024. Check the license (California A193856, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Olivia Marais
- Credential
- MD
- Primary taxonomy
- Epilepsy Physician 2084E0001X
- License number
- A193856 CA
Self-reported in NPPES; status is on the state search - Practice location
- 213 Quarry Road, Palo Alto, CA 94304
- Phone
- (650) 721-5552
- Enumerated
- Jul 9, 2024
- Record last updated
- Jul 9, 2024
- Entity
- Type 1 · individual
8 nearest epilepsy physician records → All 54 in California → Look up another NPI →
Also registered at 213 Quarry Road
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mark Bigder, M.D.Neurological Surgery Physician1306347679
Verify Olivia Marais in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A193856Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $805.35
2 payments; by number, the most common kind was travel and lodging; the largest payer was Neuropace, Inc. The 345 providers of this specialty with any payment received $6,278.39 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Olivia Marais among 54 epilepsy physician records in California
Olivia Marais, MD is one of 54 epilepsy physician records with a practice address in California. 93% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 98% of them.
- NPI issued2024 · 98% of these records are older, 0% newer
- In a Medicare fileYes · 93% of these records are
- In the CMS Doctors and Clinicians fileNo · 80% of these records are
- Record last updated2024 · 7% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084E0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Epilepsy Physician providers in California
There are 54 epilepsy physician records in California.
All 54 in California → Every provider in Palo Alto → Epilepsy Physician nationwide →
The 8 epilepsy physician records with the nearest ZIP codes
- Fiona Baumer, MDPalo Alto, CA 943041386969715
- Roger Chang, MD, PHDPalo Alto, CA 943041679035216
- William Gallentine, MDPalo Alto, CA 943041578595211
- Hyunmi Kim, MD, PHDPalo Alto, CA 943041811191836
- Juliet Knowles, MD, PHDPalo Alto, CA 943041285926618
- Emily Spelbrink, MD, PHDPalo Alto, CA 943041821302043
- Katherine Xiong, MDPalo Alto, CA 943041386149284
- Robert Fisher, MDStanford, CA 943051669425740
Common questions
What is Olivia Marais, MD's NPI number?
Olivia Marais, MD's National Provider Identifier (NPI) is 1578309597, issued on Jul 9, 2024. An NPI identifies a provider in billing; it is not a license.
Where is Olivia Marais, MD located?
The NPPES record lists a practice address at 213 Quarry Road, Palo Alto, CA, 94304. Phone: (650) 721-5552. Providers update this record themselves, so call before visiting.
How can I verify Olivia Marais, MD's license?
NPPES lists California license number A193856, 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.
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.