Physician Profile
John Thieszen, M.D.
Unclaimed ProfileAbout Dr. Thieszen
No biography has been added yet. Is this you? Claim this profile to add one.
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
- (970) 391-0572
- Email not available
Practice Locations
3528 GABEL RD
Billings, MT 59102
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 2
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 John Thieszen?
John Thieszen is an internist in Billings, MT. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
What is John Thieszen's address?
John Thieszen is listed at 3528 Gabel Rd, Billings, MT 59102. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with John Thieszen?
The number on file is (970) 391-0572. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is John Thieszen's NPI number?
John Thieszen's National Provider Identifier is 1285667816. 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 Thieszen been practicing?
John Thieszen 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 Thieszen confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by John Thieszen. 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.