Derek Douglas Henderson
- Medicare patients, 2024
- 24
- Part D claims, 2024
- 48
- Hospital affiliations
- 1
- Industry payments
- $21
- Medical groups
- 2
- Practice address
- 603 South Chestnut, Ellensburg, WA 98926
- Practice phone
- Call (509) 962-9841
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Derek Henderson'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.
Derek Douglas Henderson is a physician assistant in Ellensburg, Washington
Derek Henderson practices at Kittitas Valley Healthcare in Ellensburg, Washington, part of Kittitas Valley Healthcare.
Derek Henderson's NPI, 1871038109, was assigned on December 22, 2016. Derek Henderson holds New Hampshire license 1680.
- NPI
- 1871038109NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2163777350
- NPI enumeration date
- December 22, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (509) 962-9841
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Derek Douglas Henderson practices at Kittitas Valley Healthcare in Ellensburg, Washington
Derek Henderson's primary practice is Kittitas Valley Healthcare, at 603 South Chestnut, Ellensburg, WA 98926 in Kittitas County. The practice phone is (509) 962-9841.
- Kittitas Valley Healthcare603 South Chestnut, Ellensburg, WA 98926 · Kittitas CountyPhone(509) 962-9841
Source: Dmand AI Affiliation Data
Derek Douglas Henderson is affiliated with 2 sites of care and 2 medical groups
Derek Henderson's primary practice is Kittitas Valley Healthcare in Ellensburg, Washington, part of Kittitas Valley Healthcare. The medical group on file is Kittitas Valley Healthcare. Dmand AI also links Derek Henderson to 1 more ambulatory surgery center 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 Derek Douglas Henderson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Derek Henderson practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kittitas Valley Healthcare | Available with a free account |
| +1 more site 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 Kittitas Valley Healthcare and 6.2K+ hospitals, with verified contacts in the same login.
Derek Douglas Henderson is one of 3,005 physician assistants in Washington
Physician assistant is Derek Henderson's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Derek Henderson is licensed in New Hampshire.
Specialties and state licenses
- Physician assistant, New HampshirePrimary
Physician assistants near Derek Henderson
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
Derek Douglas Henderson treated 24 Medicare patients in 2024, average age 73
CMS counts 24 Medicare patients who saw Derek Henderson in 2024. The largest group is 65 to 74, with 13 patients. 75% of them have arthritis, and 67% have high blood pressure. Their average risk score is 0.73, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Derek Henderson's median patient age at 69, with 56% women.
Derek Henderson's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Derek Henderson's Medicare patients, 2024
- Arthritis75%
- High blood pressure67%
Share of Medicare patients with each condition. A patient can have several.
Derek Henderson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women56%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Derek Douglas Henderson wrote 48 Medicare Part D claims in 2024
In 2024, Derek Henderson wrote 48 Medicare Part D claims for 31 patients. 98% of them were for generic drugs.
Derek Henderson's Part D claims by kind of drug, 2024
- Generic47 claims98%
- Brand-name and other1 claims2%
Drug classes CMS tracks in Derek Henderson's Part D claims, 2024
- Opioids25%12 of 48 claims
- Antibiotics25%12 of 48 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 Derek Douglas Henderson takes part in Medicare
Derek Henderson 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
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Derek Douglas Henderson received $21 in industry payments in 2025
CMS Open Payments shows 1 general payment to Derek Henderson from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $21.
Companies that paid Derek Henderson 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 Derek Douglas Henderson'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 Derek Douglas Henderson
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Derek Douglas Henderson's NPI number?
Derek Douglas Henderson's NPI number is 1871038109. It was assigned on December 22, 2016, and it is active in the NPI Registry.
What does Derek Douglas Henderson specialize in?
Derek Douglas Henderson is a physician assistant in Ellensburg, Washington. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Derek Douglas Henderson practice?
Derek Henderson practices at 603 South Chestnut, Ellensburg, WA 98926. Derek Henderson's primary practice is Kittitas Valley Healthcare in Ellensburg, Washington, part of Kittitas Valley Healthcare. Dmand AI also links Derek Henderson to 1 ambulatory surgery center and 1 medical group.
What is Derek Douglas Henderson's office phone number?
The practice phone on file for Derek Henderson is (509) 962-9841.
What is Derek Douglas Henderson's medical license number?
Derek Henderson holds New Hampshire license 1680, one of 2 state licenses on file.
Which hospitals is Derek Douglas Henderson affiliated with?
Derek Henderson practices at Kittitas Valley Healthcare in Ellensburg, Washington.
What medical group is Derek Douglas Henderson part of?
Derek Henderson is linked to Kittitas Valley Healthcare. Dmand AI links Derek Henderson to 1 more medical group.
Does Derek Douglas Henderson accept Medicare?
Yes. CMS lists Derek Henderson as accepting Medicare assignment.
How many Medicare patients does Derek Douglas Henderson see?
CMS counts 24 Medicare patients who saw Derek Henderson in 2024, with an average age of 73.
Has Derek Douglas Henderson received payments from drug or device companies?
CMS Open Payments shows $21 in general payments to Derek Henderson from 1 company from 2025 to 2025. The largest total came from Merck Sharp & Dohme Corporation.
How long has Derek Douglas Henderson been practicing?
Derek Henderson graduated from medical school in 2016, 10 years ago.
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