Physician Profile
John L. Gruen, MD
Unclaimed ProfileAbout Dr. Gruen
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Education & Training
Specialty
Credentials & Licensing
Source: NPPES NPI Registry
Contact Information
- (818) 375-2000
- Email not available
Practice Locations
13652 CANTARA ST
Panorama City, CA 91402
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 internists at this location 5
Same specialty, same street address — most likely the same department or group.
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.
More connections — 19 related providers in 3 groups
Other internists in Panorama City 3
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1983 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What does Dr. Gruen specialize in?
Dr. Gruen is an internist in Panorama City, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
Where is Dr. Gruen located?
Dr. Gruen is listed at 13652 Cantara St, Panorama City, CA 91402. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Gruen's phone number?
The number on file is (818) 375-2000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Gruen?
Dr. Gruen's National Provider Identifier is 1619036365. 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
Where did Dr. Gruen go to medical school?
Dr. Gruen attended Other, graduating in 1983. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Gruen have?
Dr. Gruen has 43 years experience. Calculated from a graduation year of 1983, reported in the CMS National Downloadable File.
CMS public data
Is Dr. Gruen's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. 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.