Dr. William Ferril, MD
- Part D claims, 2024
- 293
- Hospital affiliations
- 1
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 1600 Hospital Way, Whitefish, MT 59937
- Practice phone
- Call (406) 863-3550
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Ferril'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 Ferril is a general practice physician in Whitefish, Montana
Dr. Ferril practices at Logan Health - Whitefish in Whitefish, Montana, part of Billings Clinic.
Dr. Ferril's NPI, 1285737635, was assigned on September 7, 2006. Dr. Ferril holds Montana license 5332.
- NPI
- 1285737635NPI Registry (opens in a new tab)
- NPI enumeration date
- September 7, 2006
- NPI status
- Active
- Practice phone
- (406) 863-3550
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. William Ferril practices at Logan Health - Whitefish in Whitefish, Montana
Dr. Ferril's primary practice is Logan Health - Whitefish, at 1600 Hospital Way, Whitefish, MT 59937 in Flathead County. The practice phone is (406) 863-3550.
- Logan Health - Whitefish1600 Hospital Way, Whitefish, MT 59937 · Flathead CountyPhone(406) 863-3550
Source: Dmand AI Affiliation Data
Dr. William Ferril is affiliated with 1 site of care
Dr. Ferril's primary practice is Logan Health - Whitefish in Whitefish, Montana, part of Billings Clinic.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William Ferril's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ferril practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Logan Health - Whitefish | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William Ferril is one of 32 general practice physicians in Montana
General practice is Dr. Ferril's primary specialty in the NPI Registry, under taxonomy code 208D00000X. Dr. Ferril is licensed in Montana.
Specialties and state licenses
- General practice, MontanaPrimary
General practice physicians near Dr. Ferril
Counts of general practice 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. William Ferril's patients have a median age of 72
Across all payers, Dmand AI patient panel data puts Dr. Ferril's median patient age at 72, with 60% women.
Dr. Ferril's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women60%
- Men38%
Source: Dmand AI Patient Panel Data
Dr. William Ferril wrote 293 Medicare Part D claims in 2024
In 2024, Dr. Ferril wrote 293 Medicare Part D claims for 50 patients. 79% of them were for generic drugs. CMS names the drug for 219 of them, across 9 drugs with 11 or more claims each, at $5,186 in total drug cost. In 2023, CMS named 188 claims across 7 drugs.
Dr. Ferril's Part D claims by kind of drug, 2024
- Generic231 claims79%
- Brand-name62 claims21%
Dr. Ferril'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.
Drug classes CMS tracks in Dr. Ferril's Part D claims, 2024
- Opioids6%17 of 293 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, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1882024: 21916%
Drugs named by CMS: 9 in 2024, 7 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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Sources for Dr. William Ferril'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 |
| 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) |
| 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 Ferril
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 Ferril's NPI number?
Dr. William Ferril's NPI number is 1285737635. It was assigned on September 7, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William Ferril?
Dr. William Ferril is a general practice physician in Whitefish, Montana. The primary specialty in the NPI Registry is General Practice Physician (taxonomy code 208D00000X).
Where does Dr. William Ferril practice?
Dr. Ferril practices at 1600 Hospital Way, Whitefish, MT 59937. Dr. Ferril's primary practice is Logan Health - Whitefish in Whitefish, Montana, part of Billings Clinic.
What is Dr. William Ferril's office phone number?
The practice phone on file for Dr. Ferril is (406) 863-3550.
What is Dr. William Ferril's medical license number?
Dr. Ferril holds Montana license 5332.
Which hospitals is Dr. William Ferril affiliated with?
Dr. Ferril practices at Logan Health - Whitefish in Whitefish, Montana.
What drugs does Dr. William Ferril prescribe most?
In 2024 Medicare Part D data, Dr. Ferril's most prescribed drugs by claims were Potassium Chloride, Levothyroxine Sodium and Synthroid.
How long has Dr. William Ferril been practicing?
Dr. Ferril's NPI was assigned in 2006.
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