Dr. Duncan Dwaynne Harris, MD
- Part D claims, 2024
- 1,913
- Hospital affiliations
- 5
- Industry payments
- $1,458
- Medical group
- 1
- State license
- 1
- Practice address
- 1221 Highland Avenue, Clarkston, WA 99403
- Practice phone
- Call (509) 758-5511
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Harris' 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. Duncan Dwaynne Harris is a urologist in Clarkston, Washington
Dr. Harris practices at TriState Health in Clarkston, Washington, part of Tri-State Memorial Hospital.
Dr. Harris' NPI, 1679528632, was assigned on May 24, 2006. Dr. Harris graduated from Loma Linda University School of Medicine in 1992. Dr. Harris holds California license G77559.
- NPI
- 1679528632NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9133146236
- NPI enumeration date
- May 24, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (509) 758-5511
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Duncan Dwaynne Harris practices at TriState Health in Clarkston, Washington
Dr. Harris' primary practice is TriState Health, at 1221 Highland Avenue, Clarkston, WA 99403 in Asotin County. The practice phone is (509) 758-5511.
- TriState Health1221 Highland Avenue, Clarkston, WA 99403 · Asotin CountyPhone(509) 758-5511
Source: Dmand AI Affiliation Data
Dr. Duncan Dwaynne Harris is affiliated with 5 sites of care and 1 medical group
Dr. Harris' primary practice is TriState Health in Clarkston, Washington, part of Tri-State Memorial Hospital. Dr. Harris is also affiliated with St. Joseph Regional Medical Center. The medical group on file is TriState Health. Dmand AI also links Dr. Harris to 3 more hospitals, each named with a free account. Dr. Harris' employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Duncan Dwaynne Harris' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Harris practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| TriState Health | Available with a free account |
| +4 more affiliated sites | 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 Tri-State Memorial Hospital and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Duncan Dwaynne Harris is one of 281 urologists in Washington
Urology is Dr. Harris' primary specialty in the NPI Registry, under taxonomy code 208800000X. Dr. Harris is licensed in California.
Specialties and state licenses
- Urology, CaliforniaPrimary
Urologists near Dr. Harris
Counts of urologists 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. Duncan Dwaynne Harris' patients have a median age of 76
Across all payers, Dmand AI patient panel data puts Dr. Harris' median patient age at 76, with 23% women.
Dr. Harris' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women23%
- Men76%
Source: Dmand AI Patient Panel Data
Dr. Duncan Dwaynne Harris wrote 1,913 Medicare Part D claims in 2024
In 2024, Dr. Harris wrote 1,913 Medicare Part D claims for 441 patients. 86% of them were for generic drugs. CMS names the drug for 1,838 of them, across 24 drugs with 11 or more claims each, at $182,079 in total drug cost.
Dr. Harris' Part D claims by kind of drug, 2024
- Generic1,650 claims86%
- Brand-name and other263 claims14%
Dr. Harris' 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. Harris' Part D claims, 2024
- Opioids3%59 of 1,913 claims
- Antibiotics13%241 of 1,913 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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
How Dr. Duncan Dwaynne Harris takes part in Medicare
Dr. Harris 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.
Dr. Duncan Dwaynne Harris received $1,458 in industry payments from 2024 to 2025
CMS Open Payments shows 50 general payments to Dr. Harris from 16 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 93% of the total. Sumitomo Pharma America, Inc. paid the most, $305.
General payments to Dr. Harris by program year, 2024 to 2025
General payments to Dr. Harris by kind, 2024 to 2025
- Food and beverage$1,35993%
- Education$997%
Companies that paid Dr. Harris the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Duncan Dwaynne Harris graduated from Loma Linda University School of Medicine
Dr. Harris graduated from Loma Linda University School of Medicine in 1992.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Duncan Dwaynne Harris'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) |
| 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) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. Duncan Dwaynne Harris
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. Duncan Dwaynne Harris' NPI number?
Dr. Duncan Dwaynne Harris' NPI number is 1679528632. It was assigned on May 24, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Duncan Dwaynne Harris?
Dr. Duncan Dwaynne Harris is a urologist in Clarkston, Washington. The primary specialty in the NPI Registry is Urology Physician (taxonomy code 208800000X).
Where does Dr. Duncan Dwaynne Harris practice?
Dr. Harris practices at 1221 Highland Avenue, Clarkston, WA 99403. Dr. Harris' primary practice is TriState Health in Clarkston, Washington, part of Tri-State Memorial Hospital. Dmand AI also links Dr. Harris to 3 hospitals.
What is Dr. Duncan Dwaynne Harris' office phone number?
The practice phone on file for Dr. Harris is (509) 758-5511.
What is Dr. Duncan Dwaynne Harris' medical license number?
Dr. Harris holds California license G77559.
Which hospitals is Dr. Duncan Dwaynne Harris affiliated with?
Dr. Harris practices at TriState Health in Clarkston, Washington. Dr. Harris is also affiliated with St. Joseph Regional Medical Center. Dmand AI links Dr. Harris to 3 more hospitals.
What medical group is Dr. Duncan Dwaynne Harris part of?
Dr. Harris is linked to TriState Health.
Does Dr. Duncan Dwaynne Harris accept Medicare?
Yes. CMS lists Dr. Harris as accepting Medicare assignment.
Where did Dr. Duncan Dwaynne Harris go to medical school?
Dr. Harris graduated from Loma Linda University School of Medicine in 1992.
What drugs does Dr. Duncan Dwaynne Harris prescribe most?
In 2024 Medicare Part D data, Dr. Harris' most prescribed drugs by claims were Tamsulosin HCl, Dutasteride and Gemtesa.
Has Dr. Duncan Dwaynne Harris received payments from drug or device companies?
CMS Open Payments shows $1,458 in general payments to Dr. Harris from 16 companies from 2024 to 2025. The largest total came from Sumitomo Pharma America, Inc.
How long has Dr. Duncan Dwaynne Harris been practicing?
Dr. Harris graduated from medical school in 1992, 34 years ago.
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