Physician Profile

Unclaimed Profile

About SIEBEL

John Vaughn Siebel, M.D. practises hematology & oncology in San Mateo, CA. John is also listed as specialising in medical oncology.

Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.

Areas of Expertise

Hematology & Oncology (Primary)
Medical Oncology (Additional)

Common questions

What does Dr. Siebel specialise in?

Dr. Siebel is a cancer specialist in San Mateo, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “Hematology & Oncology”.

NPI registry

Where is Dr. Siebel located?

Dr. Siebel is listed at 218 DE ANZA BLVD, San Mateo, CA 94402. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

NPI registry

What is Dr. Siebel's phone number?

The number on file is (650) 341-9131. Guide.md cannot book appointments or pass on messages — please call the office directly.

NPI registry

What is Dr. Siebel's NPI number?

Dr. Siebel's National Provider Identifier is 1780741306. 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 Dr. Siebel been practising?

Dr. Siebel has 19+ years experience. Registered with an NPI since 2007. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practised for longer than this.

NPI registry

Has Dr. Siebel confirmed this information?

Not yet. This profile is built from public federal data and has not been confirmed by Dr. Siebel. If this is you, claiming it is free.

Guide.md

Licensing & Certification

CA licenseG26383
NPI1780741306
NPI issued01/02/2007

Source: NPPES NPI Registry

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 cancer specialists at this location 1

Same specialty, same street address — most likely the same department or group.

Related specialists at this location 7

Clinically related specialties at the same address — the people this provider most likely works alongside.

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.

More connections — 3 related providers in 1 group

Other cancer specialists in San Mateo 3

Same specialty, same city.

Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.