Physician Profile
Isaac O. Choy, M.D.
Unclaimed ProfileAbout Dr. Choy
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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.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (510) 454-1000
- Email not available
Practice Locations
2500 MERCED ST
San Leandro, CA 94577
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 thoracic surgery specialists at this location 1
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 does Isaac O. Choy specialize in?
Isaac O. Choy is a thoracic surgery (cardiothoracic) in San Leandro, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Isaac O. Choy located?
Isaac O. Choy is listed at 2500 Merced St, San Leandro, CA 94577. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Isaac O. Choy's phone number?
The number on file is (510) 454-1000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Isaac O. Choy's NPI number?
Isaac O. Choy's National Provider Identifier is 1578641320. 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 Isaac O. Choy been practicing?
Isaac O. Choy 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 practiced for longer than this.
NPI registry
Has Isaac O. Choy confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Isaac O. Choy. 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.