Dr. Warren T. Keyser, MD
- Part D claims, 2024
- 160
- Affiliated sites
- 3
- Medical groups
- 3
- State license
- 1
- Year NPI issued
- 2020
- Practice address
- 18765 Sw Boones Ferry Rd, Tualatin, OR 97062
- Practice phone
- Call (253) 752-7320
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Lifestance Health
Tualatin, Oregon
Find Dr. Keyser'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. Warren T. Keyser is a psychiatrist in Tualatin, Oregon
Dr. Keyser practices at Lifestance Health in Tualatin, Oregon.
Dr. Keyser's NPI, 1720607088, was assigned on April 15, 2020. Dr. Keyser holds Oregon license MD219000.
- NPI
- 1720607088NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4183047509
- NPI enumeration date
- April 15, 2020
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (253) 752-7320
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Warren T. Keyser practices at Lifestance Health in Tualatin, Oregon
Dr. Keyser's primary practice is Lifestance Health, at 18765 Sw Boones Ferry Rd, Tualatin, OR 97062 in Washington County. The practice phone is (253) 752-7320.
- Lifestance Health18765 Sw Boones Ferry Rd, Tualatin, OR 97062 · Washington CountyPhone(253) 752-7320
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Warren T. Keyser is affiliated with 4 sites of care and 3 medical groups
Dr. Keyser's primary practice is Lifestance Health in Tualatin, Oregon. The medical group on file is LifeStance Health. Dmand AI also links Dr. Keyser to 2 more medical groups, 1 community health center, 1 group practice or clinic and 1 rural health clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Warren T. Keyser's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Keyser practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Lifestance Health | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Warren T. Keyser is one of 503 psychiatrists in Oregon
Psychiatry is Dr. Keyser's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Keyser is licensed in Oregon.
Specialties and state licenses
- Psychiatry, OregonPrimary
Psychiatrists near Dr. Keyser
Counts of psychiatrists 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. Warren T. Keyser's patients have a median age of 36
Across all payers, Dmand AI patient panel data puts Dr. Keyser's median patient age at 36, with 56% women.
Dr. Keyser's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 36
Patient panel by sex, all payers
- Women56%
- Men42%
Source: Dmand AI Patient Panel Data
Dr. Warren T. Keyser wrote 160 Medicare Part D claims in 2024
In 2024, Dr. Keyser wrote 160 Medicare Part D claims for 16 patients. 100% of them were for generic drugs. CMS names the drug for 55 of them, across 3 drugs with 11 or more claims each, at $615 in total drug cost. In 2023, CMS named 170 claims across 8 drugs.
Dr. Keyser's 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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1702024: 5568%
Drugs named by CMS: 3 in 2024, 8 in 2023.
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
Dr. Warren T. Keyser offers telehealth to Medicare patients
Dr. Keyser accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Keyser as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Sources for Dr. Warren T. Keyser'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| 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. Warren T. Keyser
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. Warren T. Keyser's NPI number?
Dr. Warren T. Keyser's NPI number is 1720607088. It was assigned on April 15, 2020, and it is active in the NPI Registry.
What kind of doctor is Dr. Warren T. Keyser?
Dr. Warren T. Keyser is a psychiatrist in Tualatin, Oregon. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Warren T. Keyser practice?
Dr. Keyser practices at 18765 Sw Boones Ferry Rd, Tualatin, OR 97062. Dr. Keyser's primary practice is Lifestance Health in Tualatin, Oregon. Dmand AI also links Dr. Keyser to 2 medical groups, 1 community health center, 1 group practice or clinic and 1 rural health clinic.
What is Dr. Warren T. Keyser's office phone number?
The practice phone on file for Dr. Keyser is (253) 752-7320.
What is Dr. Warren T. Keyser's medical license number?
Dr. Keyser holds Oregon license MD219000.
What medical group is Dr. Warren T. Keyser part of?
Dr. Keyser is linked to LifeStance Health. Dmand AI links Dr. Keyser to 2 more medical groups.
Does Dr. Warren T. Keyser accept Medicare?
Yes. CMS lists Dr. Keyser as accepting Medicare assignment.
Does Dr. Warren T. Keyser offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Keyser as offering telehealth services.
What drugs does Dr. Warren T. Keyser prescribe most?
In 2024 Medicare Part D data, Dr. Keyser's most prescribed drugs by claims were Duloxetine HCl, Mirtazapine and Trazodone HCl.
How long has Dr. Warren T. Keyser been practicing?
Dr. Keyser graduated from medical school in 2020, 6 years ago.
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