Cancer Res Treat
Angiogenesis InhibitorsMaximum Tolerated DoseProtein Kinase Inhibitors
Dr. John R. Weis, MD
NPI1912097502
- Medicare services, 2022
- 44
- Part D claims, 2024
- 26
- Publications
- 8
- Clinical trials
- 2
- Industry payments
- $1,911
- Practice address
- 301 Becker SW Ave, Willmar, MN 56201
- Practice phone
- Call (320) 231-4425
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
CentraCare - Rice Memorial Hospital
Willmar, Minnesota
Find Dr. Weis' 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 R. Weis is a medical oncologist in Willmar, Minnesota
Dr. Weis practices at CentraCare - Rice Memorial Hospital in Willmar, Minnesota.
Dr. Weis' NPI, 1912097502, was assigned on October 13, 2006. Dr. Weis graduated from University of Minnesota Medical School in 1984. Dr. Weis holds Minnesota license 69429.
NPI and contact details
- NPI
- 1912097502NPI Registry (opens in a new tab)
- NPI enumeration date
- October 13, 2006
- NPI status
- Active
- Practice phone
- (320) 231-4425
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. John R. Weis practices at CentraCare - Rice Memorial Hospital in Willmar, Minnesota
Dr. Weis' primary practice is CentraCare - Rice Memorial Hospital, at 301 Becker SW Ave, Willmar, MN 56201 in Kandiyohi County. The practice phone is (320) 231-4425.
- CentraCare - Rice Memorial Hospital301 Becker SW Ave, Willmar, MN 56201 · Kandiyohi CountyPhone(320) 231-4425
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. John R. Weis is affiliated with 2 sites of care and 3 medical groups
Dr. Weis' primary practice is CentraCare - Rice Memorial Hospital in Willmar, Minnesota. The medical group on file is Buffalo Hospital. Dmand AI also links Dr. Weis to 2 more medical groups and 1 group practice or clinic, each named with a free account.
CentraCare - Rice Memorial HospitalPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. John R. Weis' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Weis practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| CentraCare - Rice Memorial Hospital | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
See the EHR and IT leaders at every site where Dr. Weis practices
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. John R. Weis is one of 122 medical oncologists in Minnesota
Medical oncology is Dr. Weis' primary specialty in the NPI Registry, under taxonomy code 207RX0202X. Dmand AI has Dr. Weis' licenses on file in 2 states: Minnesota and Utah.
Specialties and state licenses
- Medical oncology, MinnesotaPrimary
- Utah license
Medical oncologists near Dr. Weis
Counts of medical oncologists with a Dmand AI profile, by place and practice. Each opens the list.
122medical oncologists in Minnesota
3medical oncologists in Willmar
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. John R. Weis billed Medicare for 44 services in 2022
CMS data shows 44 Medicare services from Dr. Weis across 2 procedure codes in 2022, all of them office visits. Medicare paid $3,014 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 202244
Paid by Medicare$3,014
Procedure codes2
Dr. Weis' Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 1002022: 4456%
Dr. Weis compared with the Minnesota median for medical oncologists, 2022
- Dr. Weis
- Minnesota median
- Medicare services
- 44vs 1,28497% below
- Part D claims
- 11vs 19694% below
Medians across 119 medical oncologists in Minnesota with Dmand AI profiles that report each measure.
Dr. Weis' most billed Medicare procedure codes, 2022
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Weis?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Weis and other medical oncologists in Minnesota.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John R. Weis' patients have a median age of 69
Across all payers, Dmand AI patient panel data puts Dr. Weis' median patient age at 69, with 40% women.
Dr. Weis' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women40%
- Men60%
Source: Dmand AI Patient Panel Data
Dr. John R. Weis wrote 26 Medicare Part D claims in 2024
In 2024, Dr. Weis wrote 26 Medicare Part D claims. Every claim was for a generic drug. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $249 in total drug cost. In 2020, CMS named 148 claims across 8 drugs.
Part D claims, 202426
Drugs named by CMS1
Total drug cost$249
Dr. Weis' most prescribed drugs by claims, 2021
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Weis' Part D claims, 2024
- Antibiotics73%19 of 26 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 1482021: 1193%
Drugs named by CMS: 1 in 2021, 8 in 2020.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
For MedTech and pharma teams
Find medical oncologists like Dr. Weis by procedure volume and prescribing
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. John R. Weis has 8 publications on record
Dmand AI links 8 papers to Dr. Weis, published from 2018 to 2024. 2018 was the busiest year, with 2. The most frequent topics are Antineoplastic Combined Chemotherapy Protocols, Chemoradiotherapy and Fluorouracil. Dr. Weis' most frequent co-authors are Shane Lloyd, MD, Richard B. Cannon, MD and Ying Jia Hitchcock, MD.
Papers8
Years published2018 to 2024
Dr. Weis' papers by year, 2018 to 2024
Topics Dr. Weis writes about most
- Antineoplastic Combined Chemotherapy Protocols
- Chemoradiotherapy
- Fluorouracil
- Head and Neck Neoplasms
- Margins of Excision
- Organoplatinum Compounds
- Oxaliplatin
- Radiotherapy, Adjuvant
Dr. Weis' most frequent co-authors
- Shane Lloyd, MD4 shared papers
- Richard B. Cannon, MD3 shared papers
- Ying Jia Hitchcock, MD3 shared papers
Recent publications by Dr. Weis
Antineoplastic Combined Chemotherapy ProtocolsBevacizumabChemotherapy, Adjuvant
Head and Neck NeoplasmsMargins of ExcisionRadiotherapy, Adjuvant
Carcinoma, Squamous CellMouth NeoplasmsProcedures and Techniques Utilization
See who Dr. Weis researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Weis works with, so you can find a warm path to the right medical oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. John R. Weis has worked on 2 clinical trials
Dmand AI links Dr. Weis to 2 clinical trials, 2 of them phase 3 studies. 2 are still active or recruiting. Conditions studied include Anal Canal Carcinoma, Rectal Diseases and Anus Neoplasms. National Cancer Institute (NCI) sponsors the most, 2.
Conditions in Dr. Weis' trials
- Anal Canal Carcinoma
- Rectal Diseases
- Anus Neoplasms
- Colorectal Neoplasms
Investigators on the most trials with Dr. Weis
- Sheikh Asim Ali, MD2 shared trials
- Patrick M. Boland, MD2 shared trials
- Gary L. Buchschacher Jr, MD2 shared trials
Recent clinical trials with Dr. Weis
Rectal DiseasesColorectal NeoplasmsAtezolizumabBevacizumabFluorouracil
Nivolumab After Combined Modality Therapy in Treating Patients With High Risk Stage II-IIIB Anal Cancer (opens in a new tab)
Active, not recruitingPhase 3
Anal Canal CarcinomaAnus NeoplasmsNivolumab
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. John R. Weis received $1,911 in industry payments from 2016 to 2022
CMS Open Payments shows 13 general payments to Dr. Weis from 3 drug and device companies from 2016 to 2022. Travel and lodging make up the largest share, 56% of the total. Merck Sharp & Dohme Corporation paid the most, $1,533.
General payments to Dr. Weis by program year, 2016 to 2022
General payments to Dr. Weis by kind, 2016 to 2022
$1.9Kin total
- Travel and lodging$1,07956%
- Food and beverage$56029%
- Debt forgiveness$27114%
Companies that paid Dr. Weis the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John R. Weis graduated from University of Minnesota Medical School
Dr. Weis graduated from University of Minnesota Medical School in 1984.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John R. Weis'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab) |
| 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 R. Weis
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 R. Weis' NPI number?
Dr. John R. Weis' NPI number is 1912097502. It was assigned on October 13, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John R. Weis?
Dr. John R. Weis is a medical oncologist in Willmar, Minnesota. The primary specialty in the NPI Registry is Medical Oncology Physician (taxonomy code 207RX0202X).
Where does Dr. John R. Weis practice?
Dr. Weis practices at 301 Becker SW Ave, Willmar, MN 56201. Dr. Weis' primary practice is CentraCare - Rice Memorial Hospital in Willmar, Minnesota. Dmand AI also links Dr. Weis to 2 medical groups and 1 group practice or clinic.
What is Dr. John R. Weis' office phone number?
The practice phone on file for Dr. Weis is (320) 231-4425.
What is Dr. John R. Weis' medical license number?
Dr. Weis holds Minnesota license 69429, one of the licenses on file in 2 states.
Which states has Dr. John R. Weis been licensed in?
Dmand AI has state licenses on file for Dr. Weis in Minnesota and Utah.
What medical group is Dr. John R. Weis part of?
Dr. Weis is linked to Buffalo Hospital. Dmand AI links Dr. Weis to 2 more medical groups.
Does Dr. John R. Weis accept Medicare?
Yes. CMS data shows Dr. Weis billed Medicare for 44 services in 2022.
What services does Dr. John R. Weis bill to Medicare?
In 2022, Dr. Weis' most billed Medicare services were office visit, established patient (99214) and office visit, established patient (99213).
Where did Dr. John R. Weis go to medical school?
Dr. Weis graduated from University of Minnesota Medical School in 1984.
Show 5 more questionsShow fewer questions
What drugs does Dr. John R. Weis prescribe most?
In 2021 Medicare Part D data, Dr. Weis' most prescribed drugs by claims were Anastrozole.
Has Dr. John R. Weis received payments from drug or device companies?
CMS Open Payments shows $1,911 in general payments to Dr. Weis from 3 companies from 2016 to 2022. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. John R. Weis been practicing?
Dr. Weis graduated from medical school in 1984, 42 years ago.
Does Dr. John R. Weis do research?
Dmand AI links 8 publications to Dr. Weis, published from 2018 to 2024. Dr. Weis has worked on 2 clinical trials.
Who does Dr. John R. Weis publish with?
Dr. Weis' most frequent co-authors are Shane Lloyd, MD (4 shared papers), Richard B. Cannon, MD (3 shared papers) and Ying Jia Hitchcock, MD (3 shared papers).
Selling to medical oncology practices?
See medical oncologists in Minnesota by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card