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

Clayton M Smiley, MD

Individual provider Nephrology Physician · NPI 1679544431

Clayton M Smiley, MD is a Nephrology in Portland, Oregon. Qualified in 1998, 28 years ago. Practices with Northwest Renal Clinic Inc, a 39-clinician group, works from 3 locations, accepts Medicare assignment and offers telehealth. Licensed in Oregon and Washington.

Years since qualifying
28
Licensed in
OR, WA
In the registry since
2006
Specialties on file
2
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

1130 NW 22nd Ave Ste 640
Portland, OR 97210-2900
Phone: (503) 229-7976
Fax: (503) 274-4867
Show map & directions

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

Additional practice locations (2)

  • 925 Commercial Street Se, Ste 110, Salem, OR 97302 — (503) 967-6670
  • 8050 Sw Warm Springs Street, Ste 150, Tualatin, OR 97062 — (503) 692-7971

Specialties & licences

Nephrology Physician (primary) Taxonomy 207RN0300X · Licence MD27251 (OR)
Nephrology Physician Taxonomy 207RN0300X · Licence MD00048170 (WA)

Record details

NPI number1679544431
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 30, 2006
Last updated in NPPESSeptember 25, 2025
Certification dateSeptember 25, 2025

Medicare enrollment

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

Medicare specialtyNEPHROLOGY
Medical schoolOTHER
Graduated 1998 (28 years in practice)
Group practice Northwest Renal Clinic Inc — 39 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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