James Millard Walker, PA-C
- Medicare patients, 2024
- 181
- Part D claims, 2024
- 164
- Hospital affiliations
- 3
- Industry payments
- $132
- Medical groups
- 2
- Practice address
- 351 SW 9th Street, Ontario, OR 97914
- Practice phone
- Call (541) 881-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find James Walker'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.
James Millard Walker is a physician assistant in Ontario, Oregon
James Walker practices at Saint Alphonsus Medical Center - Ontario in Ontario, Oregon, part of Trinity Health.
James Walker's NPI, 1194021014, was assigned on February 10, 2011. James Walker holds Idaho license PA-2145.
- NPI
- 1194021014NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1557546348
- NPI enumeration date
- February 10, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (541) 881-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
James Millard Walker practices at Saint Alphonsus Medical Center - Ontario in Ontario, Oregon
James Walker's primary practice is Saint Alphonsus Medical Center - Ontario, at 351 SW 9th Street, Ontario, OR 97914 in Malheur County. The practice phone is (541) 881-7000.
- Saint Alphonsus Medical Center - Ontario351 SW 9th Street, Ontario, OR 97914 · Malheur CountyPhone(541) 881-7000
Source: Dmand AI Affiliation Data
James Millard Walker is affiliated with 6 sites of care and 2 medical groups
James Walker's primary practice is Saint Alphonsus Medical Center - Ontario in Ontario, Oregon, part of Trinity Health. James Walker is also affiliated with Saint Alphonsus Medical Center - Nampa. The medical group on file is Saint Alphonsus Regional Medical Center. Dmand AI also links James Walker to 1 more hospital, 2 group practices and clinics, 1 therapy and rehab clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at James Millard Walker's practice
Dmand AI tracks the electronic health record (EHR) system at each site where James Walker practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Saint Alphonsus Medical Center - Ontario | Available with a free account |
| +5 more sites and 1 medical group | 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 Trinity Health and 6.2K+ hospitals, with verified contacts in the same login.
James Millard Walker is one of 1,937 physician assistants in Oregon
Physician assistant is James Walker's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Dmand AI has James Walker's licenses on file in 3 states: Idaho, Oregon and Utah.
Specialties and state licenses
- Physician assistant, IdahoPrimary
- Oregon license
- Utah license
Physician assistants near James Walker
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
James Millard Walker treated 181 Medicare patients in 2024, average age 74
CMS counts 181 Medicare patients who saw James Walker in 2024. The largest group is 65 to 74, with 89 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 15% are also on Medicaid. Their average risk score is 1.48, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts James Walker's median patient age at 71, with 56% women.
James Walker's Medicare patients by age, 2024
James Walker's Medicare patients by sex, 2024
- Women10256%
- Men7944%
Chronic conditions among James Walker's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis70%
- Diabetes34%
- Mood disorders32%
- Depression29%
- Ischemic heart disease27%
- Osteoporosis26%
Share of Medicare patients with each condition. A patient can have several.
James Walker's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women56%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
James Millard Walker wrote 164 Medicare Part D claims in 2024
In 2024, James Walker wrote 164 Medicare Part D claims for 90 patients. 99% of them were for generic drugs.
James Walker's Part D claims by kind of drug, 2024
- Generic162 claims99%
- Brand-name and other2 claims1%
Drug classes CMS tracks in James Walker's Part D claims, 2024
- Opioids41%67 of 164 claims
- Antibiotics7%12 of 164 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
How James Millard Walker takes part in Medicare
James Walker accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
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James Millard Walker received $132 in industry payments in 2025
CMS Open Payments shows 7 general payments to James Walker from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Stryker Corporation paid the most, $132.
Companies that paid James Walker 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 James Millard Walker'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 James Millard Walker
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is James Millard Walker's NPI number?
James Millard Walker's NPI number is 1194021014. It was assigned on February 10, 2011, and it is active in the NPI Registry.
What does James Millard Walker specialize in?
James Millard Walker is a physician assistant in Ontario, Oregon. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does James Millard Walker practice?
James Walker practices at 351 SW 9th Street, Ontario, OR 97914. James Walker's primary practice is Saint Alphonsus Medical Center - Ontario in Ontario, Oregon, part of Trinity Health. Dmand AI also links James Walker to 1 hospital, 2 group practices and clinics, 1 therapy and rehab clinic and 1 medical group.
What is James Millard Walker's office phone number?
The practice phone on file for James Walker is (541) 881-7000.
What is James Millard Walker's medical license number?
James Walker holds Idaho license PA-2145, one of the licenses on file in 3 states.
Which states has James Millard Walker been licensed in?
Dmand AI has state licenses on file for James Walker in Idaho, Oregon and Utah.
Which hospitals is James Millard Walker affiliated with?
James Walker practices at Saint Alphonsus Medical Center - Ontario in Ontario, Oregon. James Walker is also affiliated with Saint Alphonsus Medical Center - Nampa. Dmand AI links James Walker to 1 more hospital.
What medical group is James Millard Walker part of?
James Walker is linked to Saint Alphonsus Regional Medical Center. Dmand AI links James Walker to 1 more medical group.
Does James Millard Walker accept Medicare?
Yes. CMS lists James Walker as accepting Medicare assignment.
How many Medicare patients does James Millard Walker see?
CMS counts 181 Medicare patients who saw James Walker in 2024, with an average age of 74.
Has James Millard Walker received payments from drug or device companies?
CMS Open Payments shows $132 in general payments to James Walker from 1 company from 2025 to 2025. The largest total came from Stryker Corporation.
How long has James Millard Walker been practicing?
James Walker graduated from medical school in 2010, 16 years ago.
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