Mason Paas, MD
NPI 1386215986 · Internal Medicine Physician · Portland, OR
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mason Paas, MD is a Internal Medicine Physician provider in Portland, OR (NPI 1386215986).
Provider details
- NPI number
- 1386215986
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD225581 (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
4 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
- 2021-07-05
- Last updated
- 2025-12-02
- Certified
- 2025-12-02
Frequently asked questions
- What is Mason Paas's NPI number?
- Mason Paas's National Provider Identifier (NPI) is 1386215986, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mason Paas's specialty?
- Mason Paas is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mason Paas located?
- Mason Paas's practice location on file with NPPES is 4805 Ne Glisan St Ste Bg12, Portland, OR 97213-2933.
- What is Mason Paas's phone number?
- The practice phone number listed in the NPPES registry for Mason Paas is (503) 215-2392.
- Does Mason Paas accept Medicare?
- Mason Paas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mason Paas's NPI active?
- Yes — Mason Paas's NPI (1386215986) is active in the NPPES registry as of the last update on 2025-12-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.