Dr. William Joseph Harper, MD
- Medicare services, 2022
- 107
- Part D claims, 2022
- 44
- Industry payments
- $13,963
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 400 Saddle Dr, Helena, MT 59601-5631
- Practice phone
- Call (406) 442-0099
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
St Peter's Medical Group
Surgical practice · Helena, Montana
Find Dr. Harper'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. William Joseph Harper is a general surgeon in Helena, Montana
Dr. Harper practices at St Peter's Medical Group in Helena, Montana.
Dr. Harper's NPI, 1366574006, was assigned on March 9, 2007. Dr. Harper graduated from Wright State University Boonshoft School of Medicine in 1982. Dr. Harper holds Montana license 6273.
- NPI
- 1366574006NPI Registry (opens in a new tab)
- NPI enumeration date
- March 9, 2007
- NPI status
- Active
- Practice phone
- (406) 442-0099
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 70
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William Joseph Harper practices at 2 locations in Helena, Montana
Dr. Harper's primary practice is St Peter's Medical Group, at 400 Saddle Dr, Helena, MT 59601-5631. The practice phone is (406) 442-0099. The NPI Registry lists Dr. Harper's practice address as 2475 E Broadway St, Helena, MT 59601.
- St Peter's Medical GroupPrimary400 Saddle Dr, Helena, MT 59601-5631Phone(406) 442-0099
- NPI Registry address2475 E Broadway St, Helena, MT 59601 · Lewis And Clark CountyPhone(406) 442-0099
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. William Joseph Harper is affiliated with 1 site of care and 1 medical group
Dr. Harper's primary practice is St Peter's Medical Group in Helena, Montana. Dmand AI also links Dr. Harper to 1 medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. William Joseph Harper's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Harper practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| St Peter's Medical Group | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William Joseph Harper is one of 111 general surgeons in Montana
Surgery is Dr. Harper's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Harper is licensed in Montana.
Specialties and state licenses
- Surgery, MontanaPrimary
General surgeons near Dr. Harper
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. William Joseph Harper billed Medicare for 107 services in 2022
CMS data shows 107 Medicare services from Dr. Harper across 6 procedure codes in 2022. Medicare paid $8,795 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Harper's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 2742022: 6277%
- Other services
- 2021: 852022: 3164%
- Surgery
- 2021: 872022: 1484%
Dr. Harper compared with the Montana median for general surgeons, 2022
- Dr. Harper
- Montana median
- Medicare services
- 107vs 13521% below
- Part D claims
- 44vs 42Close to median
Medians across 121 general surgeons in Montana with Dmand AI profiles that report each measure.
Dr. Harper's 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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Harper and other general surgeons in Montana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William Joseph Harper's patients have a median age of 28
Across all payers, Dmand AI patient panel data puts Dr. Harper's median patient age at 28, with 50% women.
Dr. Harper's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 28
Patient panel by sex, all payers
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
Dr. William Joseph Harper wrote 44 Medicare Part D claims in 2022
In 2022, Dr. Harper wrote 44 Medicare Part D claims. They cover 2 drugs, with $657 in total drug cost. In 2021, CMS named 90 claims across 3 drugs.
Dr. Harper's most prescribed drugs by claims, 2022
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, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 902022: 4451%
Drugs named by CMS: 2 in 2022, 3 in 2021.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. William Joseph Harper received $13,963 in industry payments from 2017 to 2021
CMS Open Payments shows 35 general payments to Dr. Harper from 4 drug and device companies from 2017 to 2021. Education make up the largest share, 72% of the total. Intuitive Surgical, Inc. paid the most, $12,698.
General payments to Dr. Harper by program year, 2017 to 2021
General payments to Dr. Harper by kind, 2017 to 2021
- Education$10,00072%
- Travel and lodging$3,65126%
- Food and beverage$3122%
Companies that paid Dr. Harper the most, 2017 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William Joseph Harper graduated from Wright State University Boonshoft School of Medicine
Dr. Harper graduated from Wright State University Boonshoft School of Medicine in 1982.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William Joseph Harper'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 Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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) |
| 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. William Joseph Harper
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. William Joseph Harper's NPI number?
Dr. William Joseph Harper's NPI number is 1366574006. It was assigned on March 9, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. William Joseph Harper?
Dr. William Joseph Harper is a general surgeon in Helena, Montana. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. William Joseph Harper practice?
Dr. Harper practices at 400 Saddle Dr, Helena, MT 59601-5631. Dr. Harper also practices at 2475 E Broadway St, Helena, MT 59601. Dr. Harper's primary practice is St Peter's Medical Group in Helena, Montana. Dmand AI also links Dr. Harper to 1 medical group.
What is Dr. William Joseph Harper's office phone number?
The practice phone on file for Dr. Harper is (406) 442-0099.
What is Dr. William Joseph Harper's medical license number?
Dr. Harper holds Montana license 6273.
Does Dr. William Joseph Harper accept Medicare?
Yes. CMS data shows Dr. Harper billed Medicare for 107 services in 2022.
What services does Dr. William Joseph Harper bill to Medicare?
In 2022, Dr. Harper's most billed Medicare services were office visit, new patient (99204), office visit, established patient (99214) and office visit, established patient (99213).
Where did Dr. William Joseph Harper go to medical school?
Dr. Harper graduated from Wright State University Boonshoft School of Medicine in 1982.
What drugs does Dr. William Joseph Harper prescribe most?
In 2022 Medicare Part D data, Dr. Harper's most prescribed drugs by claims were Hydrocodone-Acetaminophen and Peg 3350-Electrolyte.
Has Dr. William Joseph Harper received payments from drug or device companies?
CMS Open Payments shows $13,963 in general payments to Dr. Harper from 4 companies from 2017 to 2021. The largest total came from Intuitive Surgical, Inc.
How long has Dr. William Joseph Harper been practicing?
Dr. Harper graduated from medical school in 1982, 44 years ago.
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