Nathan Bertelsen, MD
NPI 1649437179 · Internal Medicine Physician · Minneapolis, MN
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathan Bertelsen, MD is a Internal Medicine Physician provider in Minneapolis, MN (NPI 1649437179).
Provider details
- NPI number
- 1649437179
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 462 1st AveAmbcare Building, 2nd Floor, Module BNew York, NY 10016-9196Phone: (212) 562-1685Fax: (212) 562-1597
Registry dates
- Enumerated
- 2008-05-21
- Last updated
- 2020-01-24
- Certified
- 2020-01-24
Frequently asked questions
- What is Nathan Bertelsen's NPI number?
- Nathan Bertelsen's National Provider Identifier (NPI) is 1649437179, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathan Bertelsen's specialty?
- Nathan Bertelsen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nathan Bertelsen located?
- Nathan Bertelsen's practice location on file with NPPES is 2450 Riverside Ave, Minneapolis, MN 55454-1450.
- What is Nathan Bertelsen's phone number?
- The practice phone number listed in the NPPES registry for Nathan Bertelsen is (612) 672-6000.
- Does Nathan Bertelsen accept Medicare?
- Nathan Bertelsen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathan Bertelsen's NPI active?
- Yes — Nathan Bertelsen's NPI (1649437179) is active in the NPPES registry as of the last update on 2020-01-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.