Are you Justin Mager, M.D.? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileAt a glance
- 239 Miller Ave, #8, Mill Valley, CA 94941
About Dr. Mager
Justin Mager, M.D. is a healthcare provider in Mill Valley, CA specializing in internal medicine. This provider record is associated with NPI 1669672739.
Factual summary compiled by Guide.md from public records; not written by this provider.
Specialty
Credentials & Licensing
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
- (415) 730-4235
- Email not available
Practice Locations
239 MILLER AVE #8
Mill Valley, CA 94941
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 3
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.
Common questions
What kind of doctor is Justin Mager?
Justin Mager is an internist in Mill Valley, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
What is Justin Mager's address?
Justin Mager is listed at 239 Miller Ave #8, Mill Valley, CA 94941. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Justin Mager?
The number on file is (415) 730-4235. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Justin Mager?
Justin Mager's National Provider Identifier is 1669672739. 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 much experience does Justin Mager have?
Justin Mager 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
Is Justin Mager's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Justin Mager. If this is you, claiming it is free.
Guide.md
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