Physician Profile
Jon-Michael A. Castelli, M.D.
Unclaimed ProfileAbout Dr. Castelli
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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
- (650) 497-8000
- Email not available
Practice Locations
725 WELCH RD
Palo Alto, CA 94304
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 pediatricians at this location 4
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.
Other pediatricians in Palo Alto 4
Same specialty, same city.
Common questions
What does Jon-Michael A. Castelli specialize in?
Jon-Michael A. Castelli is a pediatrician in Palo Alto, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Pediatrics”.
NPI registry
Where is Jon-Michael A. Castelli located?
Jon-Michael A. Castelli is listed at 725 Welch Rd, Palo Alto, CA 94304. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Jon-Michael A. Castelli's phone number?
The number on file is (650) 497-8000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Jon-Michael A. Castelli's NPI number?
Jon-Michael A. Castelli's National Provider Identifier is 1710018742. 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 Jon-Michael A. Castelli been practicing?
Jon-Michael A. Castelli 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 practiced for longer than this.
NPI registry
Has Jon-Michael A. Castelli confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Jon-Michael A. Castelli. 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.