Katharine M. Mason-Ellis, PA-C
- Medicare patients, 2024
- 410
- Part D claims, 2024
- 1,838
- Hospital affiliations
- 2
- Industry payments
- $300
- Medical groups
- 3
- Practice address
- 10123 Se Market Street, Portland, OR 97216
- Practice phone
- Call (503) 257-2500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Katharine Mason-Ellis' 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.
Katharine M. Mason-Ellis is a physician assistant in Portland, Oregon
Katharine Mason-Ellis practices at Adventist Health Portland in Portland, Oregon, part of Adventist Health.
Katharine Mason-Ellis' NPI, 1174047393, was assigned on July 30, 2017. Katharine Mason-Ellis holds Oregon license PA202574.
- NPI
- 1174047393NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3678846672
- NPI enumeration date
- July 30, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (503) 257-2500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Katharine M. Mason-Ellis practices at Adventist Health Portland in Portland, Oregon
Katharine Mason-Ellis' primary practice is Adventist Health Portland, at 10123 Se Market Street, Portland, OR 97216 in Multnomah County. The practice phone is (503) 257-2500.
- Adventist Health Portland10123 Se Market Street, Portland, OR 97216 · Multnomah CountyPhone(503) 257-2500
Source: Dmand AI Affiliation Data
Katharine M. Mason-Ellis is affiliated with 3 sites of care and 3 medical groups
Katharine Mason-Ellis' primary practice is Adventist Health Portland in Portland, Oregon, part of Adventist Health. Katharine Mason-Ellis is also affiliated with OHSU Hospital. The medical group on file is Hillsboro Medical Center (Tuality Healthcare). Dmand AI also links Katharine Mason-Ellis to 2 more medical groups and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Katharine M. Mason-Ellis' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Katharine Mason-Ellis practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Adventist Health Portland | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Adventist Health and 6.2K+ hospitals, with verified contacts in the same login.
Katharine M. Mason-Ellis is one of 1,937 physician assistants in Oregon
Physician assistant is Katharine Mason-Ellis' primary specialty in the NPI Registry, under taxonomy code 363A00000X. Dmand AI has Katharine Mason-Ellis' licenses on file in 2 states: Oregon and Washington.
Specialties and state licenses
- Physician assistant, OregonPrimary
- Washington license
Physician assistants near Katharine Mason-Ellis
Counts of physician assistants 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
Katharine M. Mason-Ellis treated 410 Medicare patients in 2024, average age 77
CMS counts 410 Medicare patients who saw Katharine Mason-Ellis in 2024. The largest group is 65 to 74, with 166 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 7% are also on Medicaid. Their average risk score is 1.56, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Katharine Mason-Ellis' median patient age at 73, with 66% women.
Katharine Mason-Ellis' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Katharine Mason-Ellis' Medicare patients by sex, 2024
- Women16440%
- Men24660%
Chronic conditions among Katharine Mason-Ellis' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease63%
- Atrial fibrillation53%
- Heart failure51%
- Arthritis47%
- Chronic kidney disease35%
- Diabetes31%
Share of Medicare patients with each condition. A patient can have several.
Katharine Mason-Ellis' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women66%
- Men34%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Katharine M. Mason-Ellis wrote 1,838 Medicare Part D claims in 2024
In 2024, Katharine Mason-Ellis wrote 1,838 Medicare Part D claims for 470 patients. 72% of them were for generic drugs.
Katharine Mason-Ellis' Part D claims by kind of drug, 2024
- Generic1,329 claims72%
- Brand-name509 claims28%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Katharine M. Mason-Ellis offers telehealth to Medicare patients
Katharine Mason-Ellis accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Katharine Mason-Ellis as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Katharine M. Mason-Ellis received $300 in industry payments in 2025
CMS Open Payments shows 1 general payment to Katharine Mason-Ellis from 1 drug or device company in 2025. Gifts make up the largest share, 100% of the total. Celltrion, Inc. paid the most, $300.
Companies that paid Katharine Mason-Ellis 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 Katharine M. Mason-Ellis'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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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 Katharine M. Mason-Ellis
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Katharine M. Mason-Ellis' NPI number?
Katharine M. Mason-Ellis' NPI number is 1174047393. It was assigned on July 30, 2017, and it is active in the NPI Registry.
What does Katharine M. Mason-Ellis specialize in?
Katharine M. Mason-Ellis is a physician assistant in Portland, Oregon. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Katharine M. Mason-Ellis practice?
Katharine Mason-Ellis practices at 10123 Se Market Street, Portland, OR 97216. Katharine Mason-Ellis' primary practice is Adventist Health Portland in Portland, Oregon, part of Adventist Health. Dmand AI also links Katharine Mason-Ellis to 2 medical groups and 1 group practice or clinic.
What is Katharine M. Mason-Ellis' office phone number?
The practice phone on file for Katharine Mason-Ellis is (503) 257-2500.
What is Katharine M. Mason-Ellis' medical license number?
Katharine Mason-Ellis holds Oregon license PA202574, one of the licenses on file in 2 states.
Which states has Katharine M. Mason-Ellis been licensed in?
Dmand AI has state licenses on file for Katharine Mason-Ellis in Oregon and Washington.
Which hospitals is Katharine M. Mason-Ellis affiliated with?
Katharine Mason-Ellis practices at Adventist Health Portland in Portland, Oregon. Katharine Mason-Ellis is also affiliated with OHSU Hospital.
What medical group is Katharine M. Mason-Ellis part of?
Katharine Mason-Ellis is linked to Hillsboro Medical Center (Tuality Healthcare). Dmand AI links Katharine Mason-Ellis to 2 more medical groups.
Does Katharine M. Mason-Ellis accept Medicare?
Yes. CMS lists Katharine Mason-Ellis as accepting Medicare assignment.
Does Katharine M. Mason-Ellis offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Katharine Mason-Ellis as offering telehealth services.
Show 3 more questionsShow fewer questions
How many Medicare patients does Katharine M. Mason-Ellis see?
CMS counts 410 Medicare patients who saw Katharine Mason-Ellis in 2024, with an average age of 77.
Has Katharine M. Mason-Ellis received payments from drug or device companies?
CMS Open Payments shows $300 in general payments to Katharine Mason-Ellis from 1 company from 2025 to 2025. The largest total came from Celltrion, Inc.
How long has Katharine M. Mason-Ellis been practicing?
Katharine Mason-Ellis graduated from medical school in 2017, 9 years ago.
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