IndividualActive
Michael Walczyk, MD
NPI 1871562892 · Nephrology Physician · Portland, OR
Provider details
- NPI number
- 1871562892
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 23874 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(100/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
1130 Nw 22nd Ave Ste 400
Portland, OR 97210-2971
Phone: (503) 413-6722
Fax: (503) 413-6563
Street-level locationGet directions
Mailing address
Po Box 4037
Portland, OR 97208-4037
Additional practice locations (2)
- 75 Puuhonu Pl Ste 100Hilo, HI 96720-2000Phone: (808) 935-8647Fax: (808) 935-9783
- 1130 Nw 22nd Ave Ste 640Portland, OR 97210-2993Phone: (503) 229-7976Fax: (503) 274-4867
Registry dates
- Enumerated
- 2006-03-14
- Last updated
- 2020-01-14
- Certified
- 2020-01-14
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.