Dr. John Peter Halfen III, MD
- Part D claims, 2024
- 25
- Hospital affiliations
- 1
- Industry payments
- $19
- Medical group
- 1
- State license
- 1
- Practice address
- 420 E 1st St, Duluth, MN 55805
- Practice phone
- Call (651) 635-9272
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Option Care
Duluth, Minnesota
Find Dr. Halfen'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. John Peter Halfen III is a family medicine physician in Duluth, Minnesota
Dr. Halfen practices at Option Care in Duluth, Minnesota.
Dr. Halfen's NPI, 1932199379, was assigned on October 26, 2005. Dr. Halfen graduated from University of Minnesota Medical School in 1975. Dr. Halfen holds Minnesota license 23337.
- NPI
- 1932199379NPI Registry (opens in a new tab)
- NPI enumeration date
- October 26, 2005
- NPI status
- Active
- Practice phone
- (651) 635-9272
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 77
- Medical school graduation
- 1975
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. John Peter Halfen III practices at Option Care in Duluth, Minnesota
Dr. Halfen's primary practice is Option Care, at 420 E 1st St, Duluth, MN 55805 in Saint Louis County. The practice phone is (651) 635-9272.
- Option Care420 E 1st St, Duluth, MN 55805 · Saint Louis CountyPhone(651) 635-9272
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. John Peter Halfen III is affiliated with 2 sites of care and 1 medical group
Dr. Halfen's primary practice is Option Care in Duluth, Minnesota. Dr. Halfen is also affiliated with Lakewood Health System. The medical group on file is Lakewood Health System.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John Peter Halfen III's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Halfen practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Option Care | 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 Peter Halfen III is one of 3,336 family medicine physicians in Minnesota
Family medicine is Dr. Halfen's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Halfen is licensed in Minnesota.
Specialties and state licenses
- Family medicine, MinnesotaPrimary
Family medicine physicians near Dr. Halfen
Counts of family medicine physicians 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 Peter Halfen III's patients have a median age of 60
Across all payers, Dmand AI patient panel data puts Dr. Halfen's median patient age at 60, with 47% women.
Dr. Halfen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women47%
- Men53%
Source: Dmand AI Patient Panel Data
Dr. John Peter Halfen III wrote 25 Medicare Part D claims in 2024
In 2024, Dr. Halfen wrote 25 Medicare Part D claims. 100% of them were for generic drugs. CMS names the drug for 24 of them, across 1 drug with 11 or more claims each, at $211 in total drug cost. In 2023, CMS named 87 claims across 4 drugs.
Dr. Halfen's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 872024: 2472%
Drugs named by CMS: 1 in 2024, 4 in 2023.
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
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Dr. John Peter Halfen III received $19 in industry payments in 2021
CMS Open Payments shows 1 general payment to Dr. Halfen from 1 drug or device company in 2021. Food and beverage make up the largest share, 100% of the total. Astellas Pharma US Inc paid the most, $19.
Companies that paid Dr. Halfen the most, 2021 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John Peter Halfen III graduated from University of Minnesota Medical School
Dr. Halfen graduated from University of Minnesota Medical School in 1975.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John Peter Halfen III'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 DataDmand AI Org Hierarchy Data |
| 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) |
| 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 Peter Halfen III
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 Peter Halfen III's NPI number?
Dr. John Peter Halfen III's NPI number is 1932199379. It was assigned on October 26, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. John Peter Halfen III?
Dr. John Peter Halfen III is a family medicine physician in Duluth, Minnesota. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. John Peter Halfen III practice?
Dr. Halfen practices at 420 E 1st St, Duluth, MN 55805. Dr. Halfen's primary practice is Option Care in Duluth, Minnesota.
What is Dr. John Peter Halfen III's office phone number?
The practice phone on file for Dr. Halfen is (651) 635-9272.
What is Dr. John Peter Halfen III's medical license number?
Dr. Halfen holds Minnesota license 23337.
Which hospitals is Dr. John Peter Halfen III affiliated with?
Dr. Halfen is affiliated with Lakewood Health System.
What medical group is Dr. John Peter Halfen III part of?
Dr. Halfen is linked to Lakewood Health System.
Where did Dr. John Peter Halfen III go to medical school?
Dr. Halfen graduated from University of Minnesota Medical School in 1975.
What drugs does Dr. John Peter Halfen III prescribe most?
In 2024 Medicare Part D data, Dr. Halfen's most prescribed drugs by claims were Simvastatin.
Has Dr. John Peter Halfen III received payments from drug or device companies?
CMS Open Payments shows $19 in general payments to Dr. Halfen from 1 company from 2021 to 2021. The largest total came from Astellas Pharma US Inc.
How long has Dr. John Peter Halfen III been practicing?
Dr. Halfen graduated from medical school in 1975, 51 years ago.
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