Provider Profile
Margaret Sidun
Unclaimed ProfileAbout Margaret Sidun
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Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Contact Information
- (650) 513-6500
- Email not available
Practice Locations
2251 PALM AVE
San Mateo, CA 94403
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other addiction & substance abuse counselors at this location 8
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Common questions
What kind of doctor is Margaret Sidun?
Margaret Sidun is an addiction & substance abuse counselor in San Mateo, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Margaret Sidun's address?
Margaret Sidun is listed at 2251 Palm Ave, San Mateo, CA 94403. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Margaret Sidun?
The number on file is (650) 513-6500. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Margaret Sidun's NPI number?
Margaret Sidun's National Provider Identifier is 1962209270. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
How long has Margaret Sidun been practicing?
Margaret Sidun has 1+ years experience. Registered with an NPI since 2025. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
Has Margaret Sidun confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Margaret Sidun. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.