Dr. Cassidy Johnston, DO
- Part D claims, 2024
- 534
- Hospital affiliations
- 1
- Industry payments
- $1,212
- State licenses
- 2
- Year NPI issued
- 2022
- Practice address
- 2700 SE Stratus Ave., Mcminnville, OR 97128
- Practice phone
- Call (503) 472-6131
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Johnston'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. Cassidy Johnston is a dermatologist in Mcminnville, Oregon
Dr. Johnston practices at Willamette Valley Medical Center in Mcminnville, Oregon, part of Lifepoint Health.
Dr. Johnston's NPI, 1831830694, was assigned on April 5, 2022. Dr. Johnston holds Oregon license DO214776.
- NPI
- 1831830694NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8729448816
- NPI enumeration date
- April 5, 2022
- NPI status
- Active
- Practice phone
- (503) 472-6131
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Cassidy Johnston practices at Willamette Valley Medical Center in Mcminnville, Oregon
Dr. Johnston's primary practice is Willamette Valley Medical Center, at 2700 SE Stratus Ave., Mcminnville, OR 97128 in Yamhill County. The practice phone is (503) 472-6131.
- Willamette Valley Medical Center2700 SE Stratus Ave., Mcminnville, OR 97128 · Yamhill CountyPhone(503) 472-6131
Source: Dmand AI Affiliation Data
Dr. Cassidy Johnston is affiliated with 1 site of care
Dr. Johnston's primary practice is Willamette Valley Medical Center in Mcminnville, Oregon, part of Lifepoint Health.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Cassidy Johnston's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johnston practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Willamette Valley Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Cassidy Johnston is one of 211 dermatologists in Oregon
Dermatology is Dr. Johnston's primary specialty in the NPI Registry, under taxonomy code 207N00000X. Dmand AI has Dr. Johnston's licenses on file in 2 states: Oregon and Washington.
Specialties and state licenses
- Dermatology, OregonPrimary
- Washington license
Dermatologists near Dr. Johnston
Counts of dermatologists 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. Cassidy Johnston's patients have a median age of 74
Across all payers, Dmand AI patient panel data puts Dr. Johnston's median patient age at 74, with 66% women.
Dr. Johnston's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women66%
- Men34%
Source: Dmand AI Patient Panel Data
Dr. Cassidy Johnston wrote 534 Medicare Part D claims in 2024
In 2024, Dr. Johnston wrote 534 Medicare Part D claims for 239 patients. 95% of them were for generic drugs.
Dr. Johnston's Part D claims by kind of drug, 2024
- Generic506 claims95%
- Brand-name28 claims5%
Drug classes CMS tracks in Dr. Johnston's Part D claims, 2024
- Antibiotics7%36 of 534 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Cassidy Johnston received $1,212 in industry payments in 2025
CMS Open Payments shows 39 general payments to Dr. Johnston from 11 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $382.
Companies that paid Dr. Johnston the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Cassidy Johnston'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 (CMS) (opens in a new tab) |
| Industry payments | Open Payments (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. Cassidy Johnston
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. Cassidy Johnston's NPI number?
Dr. Cassidy Johnston's NPI number is 1831830694. It was assigned on April 5, 2022, and it is active in the NPI Registry.
What kind of doctor is Dr. Cassidy Johnston?
Dr. Cassidy Johnston is a dermatologist in Mcminnville, Oregon. The primary specialty in the NPI Registry is Dermatology Physician (taxonomy code 207N00000X).
Where does Dr. Cassidy Johnston practice?
Dr. Johnston practices at 2700 SE Stratus Ave., Mcminnville, OR 97128. Dr. Johnston's primary practice is Willamette Valley Medical Center in Mcminnville, Oregon, part of Lifepoint Health.
What is Dr. Cassidy Johnston's office phone number?
The practice phone on file for Dr. Johnston is (503) 472-6131.
What is Dr. Cassidy Johnston's medical license number?
Dr. Johnston holds Oregon license DO214776, one of the licenses on file in 2 states.
Which states has Dr. Cassidy Johnston been licensed in?
Dmand AI has state licenses on file for Dr. Johnston in Oregon and Washington.
Which hospitals is Dr. Cassidy Johnston affiliated with?
Dr. Johnston practices at Willamette Valley Medical Center in Mcminnville, Oregon.
Has Dr. Cassidy Johnston received payments from drug or device companies?
CMS Open Payments shows $1,212 in general payments to Dr. Johnston from 11 companies from 2025 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Cassidy Johnston been practicing?
Dr. Johnston's NPI was assigned in 2022.
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