Dr. Katherine Mary Weir, MD
- Hospital affiliations
- 2
- State license
- 1
- Year NPI issued
- 2025
- Practice address
- 500 West Grant Street, Lake City, MN 55041
- Practice phone
- Call (651) 345-5955
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Weir's 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. Katherine Mary Weir is an internist in Lake City, Minnesota
Dr. Weir practices at Mayo Clinic Health System in Lake City in Lake City, Minnesota, part of Mayo Clinic.
Dr. Weir's NPI, 1639960420, was assigned on May 13, 2025. Dr. Weir holds Minnesota license 35322.
- NPI
- 1639960420NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0143717058
- NPI enumeration date
- May 13, 2025
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (651) 345-5955
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Katherine Mary Weir practices at Mayo Clinic Health System in Lake City in Lake City, Minnesota
Dr. Weir's primary practice is Mayo Clinic Health System in Lake City, at 500 West Grant Street, Lake City, MN 55041 in Wabasha County. The practice phone is (651) 345-5955.
- Mayo Clinic Health System in Lake City500 West Grant Street, Lake City, MN 55041 · Wabasha CountyPhone(651) 345-5955
Source: Dmand AI Affiliation Data
Dr. Katherine Mary Weir is affiliated with 3 sites of care
Dr. Weir's primary practice is Mayo Clinic Health System in Lake City in Lake City, Minnesota, part of Mayo Clinic. Dr. Weir is also affiliated with Mayo Clinic Hospital, Saint Marys Campus. Dmand AI also links Dr. Weir to 1 more skilled nursing facility, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Katherine Mary Weir's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Weir practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mayo Clinic Health System in Lake City | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Katherine Mary Weir is one of 2,322 internists in Minnesota
Internal medicine is Dr. Weir's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Weir is licensed in Minnesota.
Specialties and state licenses
- Internal medicine, MinnesotaPrimary
Internists near Dr. Weir
Counts of internists 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. Katherine Mary Weir's patients have a median age of 78
Across all payers, Dmand AI patient panel data puts Dr. Weir's median patient age at 78, with 56% women.
Dr. Weir's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 78
Patient panel by sex, all payers
- Women56%
- Men44%
Source: Dmand AI Patient Panel Data
How Dr. Katherine Mary Weir takes part in Medicare
Dr. Weir accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
Sources for Dr. Katherine Mary Weir'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 |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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. Katherine Mary Weir
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. Katherine Mary Weir's NPI number?
Dr. Katherine Mary Weir's NPI number is 1639960420. It was assigned on May 13, 2025, and it is active in the NPI Registry.
What kind of doctor is Dr. Katherine Mary Weir?
Dr. Katherine Mary Weir is an internist in Lake City, Minnesota. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Katherine Mary Weir practice?
Dr. Weir practices at 500 West Grant Street, Lake City, MN 55041. Dr. Weir's primary practice is Mayo Clinic Health System in Lake City in Lake City, Minnesota, part of Mayo Clinic. Dmand AI also links Dr. Weir to 1 skilled nursing facility.
What is Dr. Katherine Mary Weir's office phone number?
The practice phone on file for Dr. Weir is (651) 345-5955.
What is Dr. Katherine Mary Weir's medical license number?
Dr. Weir holds Minnesota license 35322.
Which hospitals is Dr. Katherine Mary Weir affiliated with?
Dr. Weir practices at Mayo Clinic Health System in Lake City in Lake City, Minnesota. Dr. Weir is also affiliated with Mayo Clinic Hospital, Saint Marys Campus.
Does Dr. Katherine Mary Weir accept Medicare?
Yes. CMS lists Dr. Weir as accepting Medicare assignment.
How long has Dr. Katherine Mary Weir been practicing?
Dr. Weir's NPI was assigned in 2025.
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