John Treffalls, MD
NPI 1518718535 · Surgery Physician · Rochester, MN
Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Treffalls, MD is a Surgery Physician provider in Rochester, MN (NPI 1518718535).
Provider details
- NPI number
- 1518718535
- Entity type
- Individual
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 80419 (MN)
Specialties & taxonomies
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
2 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
- 2024-03-28
- Last updated
- 2025-08-30
- Certified
- 2025-08-30
Frequently asked questions
- What is John Treffalls's NPI number?
- John Treffalls's National Provider Identifier (NPI) is 1518718535, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Treffalls's specialty?
- John Treffalls is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is John Treffalls located?
- John Treffalls's practice location on file with NPPES is 200 1st St Sw, Rochester, MN 55905-0001.
- What is John Treffalls's phone number?
- The practice phone number listed in the NPPES registry for John Treffalls is (507) 284-2511.
- Does John Treffalls accept Medicare?
- John Treffalls is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Treffalls's NPI active?
- Yes — John Treffalls's NPI (1518718535) is active in the NPPES registry as of the last update on 2025-08-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.