Physician Profile
John P. Gruen, M.D.
Unclaimed ProfileAbout Dr. Gruen
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Specialty
Credentials & Licensing
Source: NPPES NPI Registry
Contact Information
- (323) 442-5720
- Email not available
Practice Locations
1520 SAN PABLO ST STE 3800
Los Angeles, CA 90033
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 neurosurgeons at this location 2
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 5
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 — 8 related providers in 1 group
Common questions
What does John P. Gruen specialize in?
John P. Gruen is a neurosurgeon in Los Angeles, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Neurological Surgery”.
NPI registry
Where is John P. Gruen located?
John P. Gruen is listed at 1520 San Pablo St Ste 3800, Los Angeles, CA 90033. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is John P. Gruen's phone number?
The number on file is (323) 442-5720. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is John P. Gruen's NPI number?
John P. Gruen's National Provider Identifier is 1194769570. 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 John P. Gruen been practicing?
John P. Gruen 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 John P. Gruen confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by John P. Gruen. 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.