William Spisak, M.D.
NPI 1740274554 · Specialist · Portland, OR
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Spisak, M.D. is a Specialist provider in Portland, OR (NPI 1740274554).
Provider details
- NPI number
- 1740274554
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- OR13012 (OR)
Specialties & taxonomies
Other Service Providers
Profile Score
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
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
- 2005-09-07
- Last updated
- 2019-10-25
Frequently asked questions
- What is William Spisak's NPI number?
- William Spisak's National Provider Identifier (NPI) is 1740274554, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Spisak's specialty?
- William Spisak is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is William Spisak located?
- William Spisak's practice location on file with NPPES is 6655 Sw Griffin Dr, Portland, OR 97223.
- What is William Spisak's phone number?
- The practice phone number listed in the NPPES registry for William Spisak is (503) 706-5902.
- Does William Spisak accept Medicare?
- William Spisak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Spisak's NPI active?
- Yes — William Spisak's NPI (1740274554) is active in the NPPES registry as of the last update on 2019-10-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.