Muhannad Seyam, MD
Neurology Physician · Stanford, CA
Muhannad Seyam, MD is a neurology physician with a practice address in Stanford, California, and NPI 1841868155, issued on Jun 14, 2021. Check the license (California A202485, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Muhannad Seyam
- Credential
- MD
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- A202485 CA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Pasteur Dr, Stanford, CA 94305
- Phone
- (650) 723-4000
- Enumerated
- Jun 14, 2021
- Record last updated
- Jul 30, 2026
- Medicare enrollment
- Enrolled (PECOS I20260216000347); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 2,339 in California → Look up another NPI →
Also registered at 300 Pasteur Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Muhannad Seyam in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A202485Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average neurology physician in 2024
235 Medicare Part D claims for 57 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Gabapentin39 claims
- Levetiracetam34 claims
- Atorvastatin Calcium21 claims
- Quetiapine Fumarate13 claims
- Lamotrigine12 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.
Muhannad Seyam among 2,339 neurology physician records in California
Muhannad Seyam, MD 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 2021, is newer than 94% of them.
- NPI issued2021 · 94% of these records are older, 3% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2019 · median 2006 among the 1,628 with a school on file
- Record last updated2026 · 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).
78 neurology physician records list a practice address in Stanford
They are 78 of the 5,606 NPPES records with a practice address in Stanford, and 2,339 neurology physician records in California.
All 2,339 in California → Every provider in Stanford → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
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- Jeffrey Dunn, MDStanford, CA 943051639123383
- Erik Ensrud, MDStanford, CA 943051982658738
- Anna Finley Caulfield, M.D.Stanford, CA 943051851358097
- Hideki Garren, MDStanford, CA 943051407807183
- Michael Greicius, MDStanford, CA 943051861443509
- Frank Longo, MD, PHDStanford, CA 943051801966254
Common questions
What is Muhannad Seyam, MD's NPI number?
Muhannad Seyam, MD's National Provider Identifier (NPI) is 1841868155, issued on Jun 14, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Muhannad Seyam, MD located?
The NPPES record lists a practice address at 300 Pasteur Dr, Stanford, CA, 94305. Phone: (650) 723-4000. Providers update this record themselves, so call before visiting.
How can I verify Muhannad Seyam, MD's license?
NPPES lists California license number A202485, 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 Muhannad Seyam, MD prescribe under Medicare Part D?
In 2024, Muhannad Seyam, MD had 235 Medicare Part D claims for 57 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.