John Chen, MD
NPI 1154437945 · Internal Medicine Physician · Portland, OR
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Chen, MD is a Internal Medicine Physician provider in Portland, OR (NPI 1154437945).
Provider details
- NPI number
- 1154437945
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD17764 (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
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
- 2006-08-22
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Chen's NPI number?
- John Chen's National Provider Identifier (NPI) is 1154437945, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Chen's specialty?
- John Chen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Chen located?
- John Chen's practice location on file with NPPES is 3550 N Interstate Ave, Portland, OR 97227-1196.
- What is John Chen's phone number?
- The practice phone number listed in the NPPES registry for John Chen is (503) 285-9321.
- Does John Chen accept Medicare?
- John Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Chen's NPI active?
- Yes — John Chen's NPI (1154437945) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.