Joseph Siemienczuk, MD
NPI 1619900230 · Internal Medicine Physician · Portland, OR
Joseph Siemienczuk, MD is a Internal Medicine Physician provider in Portland, OR (NPI 1619900230).
Provider details
- NPI number
- 1619900230
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD12852 (OR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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
Mailing address
Registry dates
- Enumerated
- 2006-07-08
- Last updated
- 2008-06-13
Frequently asked questions
- What is Joseph Siemienczuk's NPI number?
- Joseph Siemienczuk's National Provider Identifier (NPI) is 1619900230, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joseph Siemienczuk's specialty?
- Joseph Siemienczuk is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Joseph Siemienczuk located?
- Joseph Siemienczuk's practice location on file with NPPES is 5050 Ne Hoyt St, Portland, OR 97213-2991.
- What is Joseph Siemienczuk's phone number?
- The practice phone number listed in the NPPES registry for Joseph Siemienczuk is (503) 215-6405.
- Is Joseph Siemienczuk's NPI active?
- Yes — Joseph Siemienczuk's NPI (1619900230) is active in the NPPES registry as of the last update on 2008-06-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.