Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Diana Denton Zellner, DO

Individual provider Hospice and Palliative Medicine (Internal Medicine) Physician · NPI 1164876827

Diana Denton Zellner, DO is a Hospice/Palliative Care in Portland, Oregon. Qualified in 2016, 10 years ago. Practices with Providence Health and Services Oregon, a 1,426-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Oregon.

Years since qualifying
10
Licensed in
OR
In the registry since
2016
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

4805 NE Glisan St Ste 11N
Portland, OR 97213-2933
Phone: (503) 215-1350
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1015 Nw 22nd Ave, Portland, OR 97210-3025 — (503) 413-6862

Specialties & licences

Hospice and Palliative Medicine (Internal Medicine) Physician (primary) Taxonomy 207RH0002X · Licence DO198502 (OR)

Record details

NPI number1164876827
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedApril 19, 2016
Last updated in NPPESOctober 3, 2024
Certification dateOctober 3, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyHOSPICE/PALLIATIVE CARE
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2016 (10 years in practice)
Group practice Providence Health And Services Oregon — 1426 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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