Physician Profile
Mark C. Johannsen, MD
Unclaimed ProfileAbout Dr. Johannsen
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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.
Contact Information
- (402) 721-3070
- Email not available
Practice Locations
450 E 23RD ST
Fremont, NE 68025
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 radiologists 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.
Other radiologists in Fremont 2
Same specialty, same city.
Common questions
What does Dr. Johannsen specialize in?
Dr. Johannsen is a radiologist in Fremont, NE. That is the designation recorded for this NPI in the federal registry, where it is listed as “Diagnostic Radiology”.
NPI registry
Where is Dr. Johannsen located?
Dr. Johannsen is listed at 450 E 23Rd St, Fremont, NE 68025. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Johannsen's phone number?
The number on file is (402) 721-3070. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Johannsen's NPI number?
Dr. Johannsen's National Provider Identifier is 1609812718. 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 Dr. Johannsen been practicing?
Dr. Johannsen 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 Dr. Johannsen confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Johannsen. 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.