Dr. John Austin Treffalls, MD
- Hospital affiliations
- 1
- Industry payments
- $1,217
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2024
- Practice address
- 1216 Second Street Southwest, Rochester, MN 55902
- Practice phone
- Call (507) 255-5123
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Treffalls' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. John Austin Treffalls is a general surgeon in Rochester, Minnesota
Dr. Treffalls practices at Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota, part of Mayo Clinic.
Dr. Treffalls' NPI, 1518718535, was assigned on March 28, 2024. Dr. Treffalls graduated from University of Texas Medical School at San Antonio in 2024. Dr. Treffalls holds Minnesota license 34312.
- NPI
- 1518718535NPI Registry (opens in a new tab)
- NPI enumeration date
- March 28, 2024
- NPI status
- Active
- Practice phone
- (507) 255-5123
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 28
- Medical school graduation
- 2024
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. John Austin Treffalls practices at Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota
Dr. Treffalls' primary practice is Mayo Clinic Hospital, Saint Marys Campus, at 1216 Second Street Southwest, Rochester, MN 55902 in Olmsted County. The practice phone is (507) 255-5123.
- Mayo Clinic Hospital, Saint Marys Campus1216 Second Street Southwest, Rochester, MN 55902 · Olmsted CountyPhone(507) 255-5123
Source: Dmand AI Affiliation Data
Dr. John Austin Treffalls is affiliated with 2 sites of care and 1 medical group
Dr. Treffalls' primary practice is Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota, part of Mayo Clinic. The medical group on file is Mayo Clinic. Dmand AI also links Dr. Treffalls to 1 more hospice, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John Austin Treffalls' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Treffalls practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mayo Clinic Hospital, Saint Marys Campus | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Austin Treffalls is one of 616 general surgeons in Minnesota
Surgery is Dr. Treffalls' primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Treffalls is licensed in Minnesota.
Specialties and state licenses
- Surgery, MinnesotaPrimary
General surgeons near Dr. Treffalls
Counts of general surgeons with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. John Austin Treffalls' patients have a median age of 57
Across all payers, Dmand AI patient panel data puts Dr. Treffalls' median patient age at 57, with 80% women.
Dr. Treffalls' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 57
Patient panel by sex, all payers
- Women80%
- Men20%
Source: Dmand AI Patient Panel Data
Dr. John Austin Treffalls received $1,217 in industry payments in 2025
CMS Open Payments shows 3 general payments to Dr. Treffalls from 3 drug and device companies in 2025. Education make up the largest share, 82% of the total. Intuitive Surgical, Inc. paid the most, $1,000.
General payments to Dr. Treffalls by kind, 2025 to 2025
- Education$1,00082%
- Food and beverage$21718%
Companies that paid Dr. Treffalls the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John Austin Treffalls graduated from University of Texas Medical School at San Antonio
Dr. Treffalls graduated from University of Texas Medical School at San Antonio in 2024.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John Austin Treffalls's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. John Austin Treffalls
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. John Austin Treffalls' NPI number?
Dr. John Austin Treffalls' NPI number is 1518718535. It was assigned on March 28, 2024, and it is active in the NPI Registry.
What kind of doctor is Dr. John Austin Treffalls?
Dr. John Austin Treffalls is a general surgeon in Rochester, Minnesota. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. John Austin Treffalls practice?
Dr. Treffalls practices at 1216 Second Street Southwest, Rochester, MN 55902. Dr. Treffalls' primary practice is Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota, part of Mayo Clinic. Dmand AI also links Dr. Treffalls to 1 hospice.
What is Dr. John Austin Treffalls' office phone number?
The practice phone on file for Dr. Treffalls is (507) 255-5123.
What is Dr. John Austin Treffalls' medical license number?
Dr. Treffalls holds Minnesota license 34312.
Which hospitals is Dr. John Austin Treffalls affiliated with?
Dr. Treffalls practices at Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota.
What medical group is Dr. John Austin Treffalls part of?
Dr. Treffalls is linked to Mayo Clinic.
Where did Dr. John Austin Treffalls go to medical school?
Dr. Treffalls graduated from University of Texas Medical School at San Antonio in 2024.
Has Dr. John Austin Treffalls received payments from drug or device companies?
CMS Open Payments shows $1,217 in general payments to Dr. Treffalls from 3 companies from 2025 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. John Austin Treffalls been practicing?
Dr. Treffalls graduated from medical school in 2024, 2 years ago.
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