Physician Profile

Unclaimed Profile

About GRANNIS

Frederic Grannis, MD is a healthcare provider in Duarte, CA specialising in surgery of the hand. Frederic is also listed as specialising in thoracic surgery (cardiothoracic).

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

Surgery of the Hand (Primary)
Thoracic Surgery (Cardiothoracic) (Additional)

Common questions

What does Dr. Grannis specialise in?

Dr. Grannis is a surgery of the hand in Duarte, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “Surgery of the Hand”.

NPI registry

Where is Dr. Grannis located?

Dr. Grannis is listed at 1500 E DUARTE RD, Duarte, CA 91010. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

NPI registry

What is Dr. Grannis's phone number?

The number on file is (626) 359-8111. Guide.md cannot book appointments or pass on messages — please call the office directly.

NPI registry

What is Dr. Grannis's NPI number?

Dr. Grannis's National Provider Identifier is 1598773582. 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. Grannis been practising?

Dr. Grannis has 20+ years experience. Registered with an NPI since 2006. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practised for longer than this.

NPI registry

Has Dr. Grannis confirmed this information?

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

Guide.md

Licensing & Certification

CA licenseG36693
NPI1598773582
NPI issued08/04/2006

Source: NPPES NPI Registry

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Related providers

Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.

Related specialists at this location 8

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.

Other surgery of the hands in Duarte 4

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.