James Martenson, M.D.
NPI 1679550958 · Radiation Oncology Physician · Rochester, MN
James Martenson, M.D. is a Radiation Oncology Physician provider in Rochester, MN (NPI 1679550958).
Provider details
- NPI number
- 1679550958
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 27169 (MN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-12-28
- Last updated
- 2024-02-09
- Certified
- 2024-02-09
Frequently asked questions
- What is James Martenson's NPI number?
- James Martenson's National Provider Identifier (NPI) is 1679550958, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Martenson's specialty?
- James Martenson is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is James Martenson located?
- James Martenson's practice location on file with NPPES is 200 1st St Sw, Rochester, MN 55905-0001.
- What is James Martenson's phone number?
- The practice phone number listed in the NPPES registry for James Martenson is (507) 284-2511.
- Is James Martenson's NPI active?
- Yes — James Martenson's NPI (1679550958) is active in the NPPES registry as of the last update on 2024-02-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.