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

Regan Melissa Duffy, MD

Individual provider Internal Medicine Physician · NPI 1487876827

Regan Melissa Duffy, MD is a Hematology/Oncology in Portland, Oregon. Graduated from Oregon Health Sciences University School of Medicine in 2007, 19 years ago. Practices with Providence Health and Services Oregon, a 1,426-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Oregon.

Years since qualifying
19
Trained at
Oregon Health Sciences University School of Medicine
Licensed in
OR
In the registry since
2007
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

9135 SW Barnes Rd Ste 261
Portland, OR 97225-6784
Phone: (503) 216-6300
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Medical Oncology Physician (primary) Taxonomy 207RX0202X · Licence MD28919 (OR)
Internal Medicine Physician Taxonomy 207R00000X · Licence MD28919 (OR)
Hematology & Oncology Physician Taxonomy 207RH0003X · Licence MD28919 (OR)

Record details

NPI number1487876827
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 3, 2007
Last updated in NPPESMay 2, 2025
Certification dateMay 2, 2025

Medicare enrollment

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

Medicare specialtyHEMATOLOGY/ONCOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolOREGON HEALTH SCIENCES UNIVERSITY SCHOOL OF MEDICINE
Graduated 2007 (19 years in practice)
Group practice Providence Health And Services Oregon — 1426 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations8 on file with Medicare

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